Android开发范例实战宝典
2024-04-21 20:20:54
环境配置
JDK
//下载：个人推荐使用最新的JDK，可以避免很多不必要的麻烦
//环境配置：打开jdk安装目录下的bin,如F:\JDK\jdk1.8.0_101\bin，将这个地址配置到环境变量的path中即可
eclipse
//下载：http://www.eclipse.org/downloads/eclipse-packages/中找到Eclipse for Android Developers
//安装：解压即可
SDK
//更新：使用国内的SDK镜像，地址：https://dsx.bugly.qq.com/repository/1#Windows
//获得如：域名 : a8521e72c694.repository.bugly.qq.com 端口：80 填入Android SDK Manager中的=>Tools=>Options中。
//SDK下载选择：
//Tools下：Android SDK Tools、Android SDK Platform-tools、Android SDK Build-tools(选择最高版本)
//Android各版本（API XX）：由于我们使用Genymotion模拟器，我们不需要下载文件名带Image的文件，Google APIs在国内开发用不上
//Extras:Android Support Repository、Google Use Driver、intel x86 emulator accelerator
Genymotion模拟器插件的安装
//下载插件：
//com.genymobile.genymotion.ide.eclipse.plugin_1.0.3.201403261147.jar
//com.genymobile.genymotion.ide.eclipse.plugin_1.0.3.201403261147.jar
//添加插件
//将2个jar文件放入eclipse下plugins文件夹中，重启eclipse
Genymotion模拟器的安装
//下载：http://www.genymotion.net/ 先注册
//安装：根据提示即可
//运行：将Genymotion目录下的所有可执行文件，兼容性改为server 2008,管理员方式运行
//配置：
//Settings=>VirtualBox:放置个安卓个版本虚拟机的位置
//Settings=>ADB：选择Use custom Android SDK tools,配置Android SDK,选择SDK的路径
VBox
//下载：https://www.virtualbox.org/wiki/Downloads
//安装：根据提示即可
//运行：将VBox目录下的所有可执行文件，兼容性改为server 2008,管理员方式运行
让你的程序变成美女
Android中基本控件的使用
//更改文字标签的内容 <TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="I am a Android Developer" />
//更改手机页面的背景色 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"android:background="@color/background_dark"tools:context="com.example.test.MainActivity" >//android:background="@color/background_dark",同时我们在res/value下创建color.xml内容增加<color name="background_dark">#FF0000</color>
//文字超链接 <TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:autoLink="web"android:text="www.baidu.com" />
//让你的文字标签更加丰富多彩 private TextView Tv;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);Tv = (TextView) findViewById(R.id.TV);String str="<font color=\"#FF0000\">我有一个梦想</font><br>"+"<font color=\"#00FF00\">成为优秀的</font><br>"+"<font color=\"#0000FF\">Android开发者</font><br>"+"<font color=\"#0F0FFF\">制作属于自己的</font><br>"+"<font color=\"#0F0F0F\">应用</font><br>";Tv.setText(Html.fromHtml(str));}<TextViewandroid:id="@+id/TV"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="@string/hello_world" />
//用户名密码输入框 <EditTextandroid:layout_width="match_parent"android:layout_height="wrap_content"android:hint="请输入用户名"/><EditText android:layout_width="match_parent"android:layout_height="wrap_content"android:password="true"android:hint="请输入密码"/>//使用线性布局LinearLayout,加入android:orientation="vertical"属性
//电话号码输入框 private EditText EtPhone;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);EtPhone = (EditText) findViewById(R.id.EtPhone);EtPhone.addTextChangedListener(new TextWatcher() {@Overridepublic void onTextChanged(CharSequence s, int start, int before, int count) {}@Overridepublic void beforeTextChanged(CharSequence s, int start, int count, int after) {}@Overridepublic void afterTextChanged(Editable s) {String phoneStr = s.toString();boolean b = isPhoneNumber(phoneStr);if(b){EtPhone.setTextColor(Color.rgb(0, 255, 0));}else{EtPhone.setTextColor(Color.rgb(255, 0, 0));}}});}public boolean isPhoneNumber(String str){String regex = "^((13[0-9])|(15[^4,\\D])||(18[0,5-9]))\\d{8}$";Pattern p = Pattern.compile(regex);Matcher m = p.matcher(str);return m.find();}//使用线性布局LinearLayout,加入android:orientation="vertical"属性
//更改输入框的文字字体 <EditText android:layout_width="match_parent"android:layout_height="wrap_content"android:typeface="normal"android:text="国"android:hint="我的字体是normal"/><EditText android:layout_width="match_parent"android:layout_height="wrap_content"android:typeface="sans"android:text="国"android:hint="我的字体是sans"/><EditText android:layout_width="match_parent"android:layout_height="wrap_content"android:typeface="serif"android:text="国"android:hint="我的字体是serif"/><EditText android:layout_width="match_parent"android:layout_height="wrap_content"android:typeface="monospace"android:text="国"android:hint="我的字体是monospace"/><EditText android:id="@+id/Et"android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="我的字体是华文行楷"/>//使用线性布局LinearLayout,加入android:orientation="vertical"属性
//我同意上述条款的页面 private TextView TV;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);TV = (TextView) findViewById(R.id.TV);String str="一、使用规则<br>二、文明用户<br>";TV.setText(Html.fromHtml(str));}<TextView android:id="@+id/TV"android:layout_width="wrap_content"android:layout_height="wrap_content"/><CheckBox android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="我同意如上条款"/>//使用线性布局LinearLayout,加入android:orientation="vertical"属性
//爱好调查页面 private CheckBox cbBasketball;private CheckBox cbPingpangball;private CheckBox cbFootball;private TextView TvResult;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {cbBasketball.setOnCheckedChangeListener(myChangeListener);cbPingpangball.setOnCheckedChangeListener(myChangeListener);cbFootball.setOnCheckedChangeListener(myChangeListener);}OnCheckedChangeListener myChangeListener = new OnCheckedChangeListener() {@Overridepublic void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {setText();}};private void findView(){cbBasketball = (CheckBox) findViewById(R.id.CbBasketball);cbPingpangball = (CheckBox) findViewById(R.id.CbPingbangball);cbFootball = (CheckBox) findViewById(R.id.CbFootball);TvResult = (TextView) findViewById(R.id.TvResult);}private void setText() {String str;TvResult.setText("");if(cbBasketball.isChecked()){str = TvResult.getText().toString()+cbBasketball.getText().toString()+",";TvResult.setText(str);}if(cbPingpangball.isChecked()){str = TvResult.getText().toString()+cbPingpangball.getText().toString()+",";TvResult.setText(str);}if(cbFootball.isChecked()){str = TvResult.getText().toString()+cbFootball.getText().toString()+",";TvResult.setText(str);}}<CheckBox android:id="@+id/CbBasketball"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="篮球"/><CheckBox android:id="@+id/CbPingbangball"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="乒乓球"/><CheckBox android:id="@+id/CbFootball"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="足球"/><TextView android:id="@+id/TvResult"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="@string/hello_world"/>//使用线性布局LinearLayout,加入android:orientation="vertical"属性
//政治面貌调查表 <RadioGroup android:id="@+id/RgPolitical"android:layout_width="wrap_content"android:layout_height="wrap_content"><RadioButton android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="党员"/><RadioButton android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="群众"/><RadioButton android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="团员"/></RadioGroup>//使用线性布局LinearLayout,加入android:orientation="vertical"属性
//应用中的关闭声音的按钮 <ToggleButton android:layout_width="wrap_content"android:layout_height="wrap_content"android:textOn="声音开启"android:textOff="声音关闭"/><Switch android:layout_width="wrap_content"android:layout_height="wrap_content"android:textOn="声音开启"android:textOff="声音关闭"/>
//应用中的音量调节效果 <SeekBar android:layout_width="match_parent"android:layout_height="wrap_content"android:max="100"android:progress="2"/>
//服务星级评价效果 <RatingBar android:layout_width="wrap_content"android:layout_height="wrap_content"android:numStars="5"android:stepSize="0.5"/>
//页面加载中效果 <ProgressBar android:layout_width="wrap_content"android:layout_height="wrap_content"/>
//日期获取框效果 private TextView Tv;private DatePicker Dp;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void findView() {Tv = (TextView) findViewById(R.id.Tv);Dp = (DatePicker) findViewById(R.id.Dp);}private void setListener() {Dp.init(2016, 10, 12, new OnDateChangedListener() {@Overridepublic void onDateChanged(DatePicker view, int year, int monthOfYear, int dayOfMonth) {Tv.setText("Year"+Dp.getYear()+"\nMonth:"+(Dp.getMonth()+1)+"\nDay:"+Dp.getDayOfMonth());}});}<TextView android:id="@+id/Tv"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="请输入您的生日"/><DatePicker android:id="@+id/Dp"android:layout_width="fill_parent"android:layout_height="wrap_content"/>//使用线性布局LinearLayout,加入android:orientation="vertical"属性
//时间获取框效果 <TextView android:id="@+id/Tv"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="请输入闹钟时间"/><TimePicker android:id="@+id/Tp"android:layout_width="fill_parent"android:layout_height="wrap_content"/>private TextView Tv;private TimePicker Tp;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void findView() {Tv = (TextView)findViewById(R.id.Tv);Tp = (TimePicker)findViewById(R.id.Tp);}private void setListener() {Tp.setOnTimeChangedListener(new OnTimeChangedListener() {@Overridepublic void onTimeChanged(TimePicker view, int hourOfDay, int minute) {Tv.setText("hour:"+hourOfDay+"\nminute:"+minute);}});}
//钟表显示效果 <AnalogClock android:layout_width="wrap_content"android:layout_height="wrap_content"/><DigitalClock android:layout_width="wrap_content"android:layout_height="wrap_content"/>
//秒表应用 private Button BtnStart;private Button BtnStop;private Button BtnReset;private Chronometer Chron;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {BtnStart.setOnClickListener(myListener);BtnStop.setOnClickListener(myListener);BtnReset.setOnClickListener(myListener);}OnClickListener myListener = new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.BtnStart:Chron.start();break;case R.id.BtnStop:Chron.stop();break;case R.id.BtnReset:Chron.setBase(SystemClock.elapsedRealtime());;break;default:break;}}};private void findView() {BtnReset = (Button) findViewById(R.id.BtnReset);BtnStart = (Button) findViewById(R.id.BtnStart);BtnStop = (Button) findViewById(R.id.BtnStop);Chron = (Chronometer) findViewById(R.id.Chron);}<Chronometer android:id="@+id/Chron"android:layout_width="wrap_content"android:layout_height="wrap_content"/><Button android:id="@+id/BtnStart"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="开始计时"/><Button android:id="@+id/BtnStop"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="停止计时"/><Button android:id="@+id/BtnReset"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="重置计时器"/>
//圆角按钮效果 <?xml version="1.0" encoding="utf-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android" ><solid android:color="#00CCFF"/><corners android:radius="10dip"/><padding android:bottom="5dp"android:left="5dp"android:right="5dp"android:top="5dp"/></shape><Button android:layout_width="match_parent"android:layout_height="wrap_content"android:background="@drawable/btn_bg"android:text="圆角按钮"/>
Android中常见布局的使用
//用户注册页面的制作 <EditText android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="请输入注册用户名"android:ems="10"/><EditText android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="请输入密码"android:ems="10"android:inputType="textPassword"/><EditText android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="请再次输入密码"android:ems="10"android:inputType="textPassword"/><EditText android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="请输入你的邮箱"android:ems="10"android:inputType="textEmailAddress"/><EditText android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="请输入你的手机号"android:ems="10"/><EditText android:layout_width="match_parent"android:layout_height="wrap_content"android:background="@drawable/btn_bg"android:text="注册"/>//btn_bg.xml<shape xmlns:android="http://schemas.android.com/apk/res/android" ><solid android:color="#00CCFF"/><corners android:radius="10dip"/><padding android:bottom="5dp"android:left="5dp"android:right="5dp"android:top="5dp"/></shape>
//学生成绩列表页面的制作 <TableLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"android:orientation="vertical"tools:context="com.example.test.MainActivity" ><TableRow android:orientation="horizontal"><TextView android:layout_width="wrap_content"android:layout_height="match_parent"android:gravity="center"android:textSize="20dp"android:layout_weight="1"android:text="学生姓名"/><TextView android:layout_width="match_parent"android:layout_height="match_parent"android:layout_weight="1"android:textSize="20dp"android:gravity="center"android:text="数学成绩"/><TextView android:layout_width="match_parent"android:layout_height="match_parent"android:layout_weight="1"android:textSize="20dp"android:gravity="center"android:text="语文成绩"/></TableRow><TableRow android:orientation="horizontal"><TextView android:layout_width="wrap_content"android:layout_height="match_parent"android:layout_weight="1"android:gravity="center"android:text="张三"/><TextView android:layout_width="wrap_content"android:layout_height="match_parent"android:layout_weight="1"android:gravity="center"android:text="90"/><TextView android:layout_width="wrap_content"android:layout_height="match_parent"android:layout_weight="1"android:gravity="center"android:text="83"/></TableRow><TableRow android:orientation="horizontal"><TextView android:layout_width="match_parent"android:layout_height="match_parent"android:layout_weight="1"android:gravity="center"android:text="李四"/><TextView android:layout_width="wrap_content"android:layout_height="match_parent"android:layout_weight="1"android:gravity="center"android:text="83"/><TextView android:layout_width="wrap_content"android:layout_height="match_parent"android:layout_weight="1"android:gravity="center"android:text="83"/></TableRow><TableRow android:orientation="horizontal"><TextView android:layout_width="match_parent"android:layout_height="match_parent"android:layout_weight="1"android:gravity="center"android:text="王五"/><TextView android:layout_width="wrap_content"android:layout_height="match_parent"android:layout_weight="1"android:gravity="center"android:text="81"/><TextView android:layout_width="wrap_content"android:layout_height="match_parent"android:layout_weight="1"android:gravity="center"android:text="82"/></TableRow></TableLayout>
//登录页面的制作 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"tools:context="com.example.test.MainActivity" ><EditText android:id="@+id/EtUsername"android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="请输入用户名"/><EditText android:id="@+id/EtPassword"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_below="@id/EtUsername"android:hint="请输入密码"/><Button android:id="@+id/BtnExit"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_below="@id/EtPassword"android:layout_alignRight="@id/EtPassword"android:hint="退出"/><Button android:id="@+id/BtnLogin"android:layout_below="@id/EtPassword"android:layout_toLeftOf="@id/BtnExit"android:layout_width="wrap_content"android:layout_height="wrap_content"android:hint="登录"/></RelativeLayout>
//图片相框效果 <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"tools:context="com.example.test.MainActivity" ><ImageView android:layout_width="wrap_content"android:layout_height="wrap_content"android:src="@drawable/imgbg"/><ImageView android:layout_width="wrap_content"android:layout_height="wrap_content"android:padding="30dp"android:src="@drawable/imgbg"/></FrameLayout>
//商城专区效果 <GridLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"tools:context="com.example.test.MainActivity" android:columnCount="4"><TextView android:layout_width="150dp"android:layout_height="60dp"android:layout_columnSpan="2"android:layout_gravity="left"android:background="@color/blue"android:gravity="center"android:text="男装"android:width="50dp"/><TextView android:layout_width="150dp"android:layout_height="60dp"android:layout_columnSpan="2"android:background="@color/red"android:gravity="center"android:text="女装"android:width="50dp"/><TextView android:layout_width="75dp"android:layout_height="60dp"android:layout_gravity="top"android:background="@color/red"android:gravity="center"android:text="童装"android:width="25dp"/><TextView android:layout_width="150dp"android:layout_height="60dp"android:layout_columnSpan="2"android:background="@color/green"android:gravity="center"android:text="流行装"android:width="50dp"/><TextView android:layout_width="75dp"android:layout_height="60dp"android:background="@color/blue"android:gravity="center"android:text="嘻哈"android:width="25dp"/></GridLayout>
//三字经阅读程序 <ScrollView xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"tools:context="com.example.test.MainActivity" ><TextView android:layout_width="match_parent"android:layout_height="match_parent"android:text="@string/tv_content"/></ScrollView>
//计算器程序的页面设计 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"tools:context="com.example.test.MainActivity" ><EditTextandroid:layout_width="match_parent"android:layout_height="wrap_content"android:text="0" /><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="horizontal" ><Buttonandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_weight="1"android:text="7" /><Buttonandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_weight="1"android:text="8" /><Buttonandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_weight="1"android:text="9" /><Buttonandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_weight="1"android:text="/" /><Buttonandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_weight="1"android:text="%" /></LinearLayout><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="horizontal" ><Buttonandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_weight="1"android:text="4" /><Buttonandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_weight="1"android:text="5" /><Buttonandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_weight="1"android:text="6" /><Buttonandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_weight="1"android:text="*" /><Buttonandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_weight="1"android:text="1/x" /></LinearLayout><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="horizontal" ><LinearLayoutandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_weight="4"android:orientation="vertical" ><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content" ><Buttonandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_weight="1"android:text="1" /><Buttonandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_weight="1"android:text="2" /><Buttonandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_weight="1"android:text="3" /><Buttonandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_weight="1"android:text="-" /></LinearLayout><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content" ><Buttonandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_weight="2"android:text="0" /><Buttonandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_weight="1"android:text="." /><Buttonandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_weight="1"android:text="+" /></LinearLayout></LinearLayout><Buttonandroid:layout_width="wrap_content"android:layout_height="match_parent"android:layout_weight="1"android:text="=" /></LinearLayout></LinearLayout>
Android中高级组件的使用
//单词搜索补全效果 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"tools:context="com.example.test.MainActivity" ><AutoCompleteTextView android:id="@+id/Actv"android:layout_width="fill_parent"android:layout_height="wrap_content"/></LinearLayout>private static final String[] words = {"abbreviation","action","active","act","ally","ball","bask"};private AutoCompleteTextView Actv;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);Actv = (AutoCompleteTextView) findViewById(R.id.Actv);ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_dropdown_item_1line,words);Actv.setAdapter(adapter);}
//多匹配补全效果 private static final String[] words = {"zhangsan","zhangshi","lisi","liliu","liushasha","wangli","wangzhengsan"};private MultiAutoCompleteTextView Mactv;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);Mactv = (MultiAutoCompleteTextView) findViewById(R.id.Mactv);ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_dropdown_item_1line,words);Mactv.setAdapter(adapter);Mactv.setTokenizer(new MultiAutoCompleteTextView.CommaTokenizer());}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"tools:context="com.example.test.MainActivity" ><MultiAutoCompleteTextView android:id="@+id/Mactv"android:layout_width="fill_parent"android:layout_height="wrap_content"/></LinearLayout>
//用户使用的操作系统调查表 private TextView Tv;private Spinner Sp;ArrayAdapter<CharSequence> adapter;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setSp();}private void setSp() {adapter = ArrayAdapter.createFromResource(this,R.array.System,android.R.layout.simple_spinner_item);adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);Sp.setAdapter(adapter);Sp.setOnItemSelectedListener(new OnItemSelectedListener() {@Overridepublic void onItemSelected(AdapterView<?> parent, View view, int position, long id) {Tv.setText(adapter.getItem(position).toString());}@Overridepublic void onNothingSelected(AdapterView<?> parent) {Tv.setText("Selected Noting");}});}private void findView() {Tv = (TextView) findViewById(R.id.Tv);Sp = (Spinner) findViewById(R.id.Sp);}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"tools:context="com.example.test.MainActivity" ><TextView android:id="@+id/Tv"android:layout_width="match_parent"android:layout_height="wrap_content"/><Spinner android:id="@+id/Sp"android:layout_width="match_parent"android:layout_height="wrap_content"/></LinearLayout><resources><string-array name="System"><item>Windows</item><item>Linux</item><item>Unix</item><item>Google Cloud</item><item>Other</item></string-array> </resources>
//电影票预售表格效果 private GridView Gv;ArrayAdapter<CharSequence> adapter;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setGv();}private void setGv() {adapter = ArrayAdapter.createFromResource(this, R.array.seat, android.R.layout.simple_gallery_item);Gv.setAdapter(adapter);}private void findView() {Gv = (GridView) findViewById(R.id.Gv);}<string-array name="seat"><item>A1 满</item><item>A2 满</item><item>A3 满</item><item>B1 满</item><item>B2 空</item><item>B3 满</item><item>C1 满</item><item>C2 空</item><item>C3 满</item></string-array> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"tools:context="com.example.test.MainActivity" ><GridView android:id="@+id/Gv"android:layout_width="match_parent"android:layout_height="match_parent"android:numColumns="3"></GridView></LinearLayout>
//文件表格列表效果 <?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"><ImageView android:id="@+id/Iv"android:layout_width="wrap_content"android:layout_height="wrap_content"/><TextView android:id="@+id/Tv"android:layout_width="match_parent"android:layout_height="wrap_content" android:gravity="center"/></LinearLayout><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"android:orientation="vertical"><GridViewandroid:id="@+id/Gv"android:layout_width="match_parent"android:layout_height="match_parent"android:numColumns="3" /></LinearLayout>public class MyFile {public String FileName;public int ImgId;public MyFile() {super();}public MyFile(String fileName, int imgId) {super();FileName = fileName;ImgId = imgId;} }public class MainActivity extends Activity {private GridView Gv;FileListAdapter adapter;private List<MyFile> fileList = new ArrayList<MyFile>();@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState); setContentView(R.layout.activity_main);findView();setData();setGv();}private void setData() {fileList.add(new MyFile("test.txt",R.drawable.doc));fileList.add(new MyFile("test.jpg",R.drawable.img));fileList.add(new MyFile("test.avi",R.drawable.video));fileList.add(new MyFile("dir1",R.drawable.dir));fileList.add(new MyFile("test.doc",R.drawable.doc));fileList.add(new MyFile("test.rmvb",R.drawable.video));fileList.add(new MyFile("test.mp4",R.drawable.video));fileList.add(new MyFile("test.rm",R.drawable.video));fileList.add(new MyFile("test.png",R.drawable.img));fileList.add(new MyFile("dir2",R.drawable.dir));}private void setGv() {adapter = new FileListAdapter(this,fileList);Gv.setAdapter(adapter);}private void findView() {Gv = (GridView) findViewById(R.id.Gv);}}public class FileListAdapter extends BaseAdapter {private Context mContext;private List<MyFile> fileList;public FileListAdapter(Context c,List<MyFile> fl) {mContext = c;fileList = fl;}@Overridepublic int getCount() {return fileList.size();}@Overridepublic Object getItem(int position) {return fileList.get(position);}@Overridepublic long getItemId(int position) {return position;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {ViewHolder viewholder =new ViewHolder();if (convertView == null) {convertView = LayoutInflater.from(mContext).inflate(R.layout.activity_filelist_item, null);}viewholder.fileImage = (ImageView) convertView.findViewById(R.id.Iv);viewholder.fileName = (TextView) convertView.findViewById(R.id.Tv);viewholder.fileImage.setBackgroundResource(fileList.get(position).ImgId);viewholder.fileName.setText(fileList.get(position).FileName);return convertView;}class ViewHolder {ImageView fileImage;TextView fileName;}}
//学生名单表 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"android:orientation="vertical"><ListViewandroid:id="@+id/Lv"android:layout_width="match_parent"android:layout_height="match_parent"/></LinearLayout>public class MainActivity extends Activity {private ListView Lv;ArrayAdapter<CharSequence> adapter;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState); // 调用父类的onCreate方法setContentView(R.layout.activity_main);findView();setGv();}private void setGv() {adapter = ArrayAdapter.createFromResource(this, R.array.names, android.R.layout.simple_gallery_item);Lv.setAdapter(adapter);}private void findView() {Lv = (ListView) findViewById(R.id.Lv);}}<resources><string-array name="names"><item>张三</item><item>李四</item><item>王五</item><item>赵六</item><item>田七</item><item>刘一</item><item>孙二</item><item>周九</item><item>郑十</item></string-array></resources>
//手机联系人列表效果 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"android:orientation="vertical"><ListViewandroid:id="@+id/Lv"android:layout_width="match_parent"android:layout_height="match_parent"/></LinearLayout><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="horizontal" ><ImageViewandroid:id="@+id/IvNews"android:layout_width="wrap_content"android:layout_height="match_parent" /><LinearLayoutandroid:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><TextViewandroid:id="@+id/TvNewsTitle"android:layout_width="match_parent"android:layout_height="wrap_content"android:gravity="left"android:textSize="20sp" /><TextViewandroid:id="@+id/TvNewsInfo"android:layout_width="match_parent"android:layout_height="wrap_content"android:gravity="left"android:textSize="10sp" /></LinearLayout></LinearLayout>public class MainActivity extends Activity {private ListView Lv;private PeopleListAdapter adapter;private Cursor cursor;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState); // 调用父类的onCreate方法setContentView(R.layout.activity_main);findView();setData();setLv();}private void setData() {cursor = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, null, null, null);}private void setLv() {adapter = new PeopleListAdapter(this,cursor);Lv.setAdapter(adapter);}private void findView() {Lv = (ListView) findViewById(R.id.Lv);}}public class People {public String PeopleName; public int ImgId; public String PeopleNumber; public People() {super();}public People(String fileName, int imgId, String info) {super();PeopleName = fileName;ImgId = imgId;PeopleNumber = info;}}public class PeopleListAdapter extends CursorAdapter {private LayoutInflater mInflater;public PeopleListAdapter(Context c, Cursor cursor) {super(c, cursor);mInflater = LayoutInflater.from(c);}@Overridepublic void bindView(View view, Context context, Cursor cursor) {ViewHolder viewholder = new ViewHolder();viewholder.PeopleImage = (ImageView) view.findViewById(R.id.IvNews);viewholder.PeopleName = (TextView) view.findViewById(R.id.TvNewsTitle);viewholder.PeopleNumber = (TextView) view.findViewById(R.id.TvNewsInfo);viewholder.PeopleImage.setBackgroundResource(R.drawable.ic_launcher);viewholder.PeopleName.setText(cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME)));viewholder.PeopleNumber.setText(cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)));}@Overridepublic View newView(Context context, Cursor cursor, ViewGroup parent) {return mInflater.inflate(R.layout.activity_list_item, parent, false);}class ViewHolder {ImageView PeopleImage;TextView PeopleName;TextView PeopleNumber;}}
//画廊图片浏览器 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"android:orientation="vertical"><Galleryandroid:id="@+id/Gal"android:layout_width="fill_parent"android:layout_height="wrap_content" /><ImageView android:id="@+id/Iv"android:layout_width="fill_parent"android:layout_height="wrap_content"/></LinearLayout>public class MainActivity extends Activity {private Gallery Gal;private ImageView Iv;private ImgsAdapter adapter;private Integer[] imgsIds = { R.drawable.b1, R.drawable.b2,R.drawable.b3, R.drawable.b4, R.drawable.b5, R.drawable.b6 };@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState); setContentView(R.layout.activity_main);findView();setGal();}private void setGal() {adapter = new ImgsAdapter(this,imgsIds);Gal.setAdapter(adapter);Gal.setOnItemClickListener(myOnitemListener);}OnItemClickListener myOnitemListener = new OnItemClickListener() {@Overridepublic void onItemClick(AdapterView<?> arg0, View arg1, int arg2,long arg3) {Iv.setImageResource(imgsIds[arg2]);}};private void findView() {Gal = (Gallery) findViewById(R.id.Gal);Iv = (ImageView) findViewById(R.id.Iv);}}public class ImgsAdapter extends BaseAdapter{private Context context;private Integer[] imgsArray;public ImgsAdapter(Context context,Integer[] mImageIds){this.context = context;imgsArray = mImageIds;}@Overridepublic int getCount() {return imgsArray.length;}@Overridepublic Object getItem(int arg0) {return arg0;}@Overridepublic long getItemId(int arg0) {return arg0;}@Overridepublic View getView(int arg0, View arg1, ViewGroup arg2) {if (arg1 == null) {ImageView view = new ImageView(this.context);int id = imgsArray[arg0];view.setImageResource(id);view.setLayoutParams(new Gallery.LayoutParams(80,80));view.setScaleType(ImageView.ScaleType.FIT_XY);arg1 = view;}return arg1;}}
//仿iPhone的CoverFlow效果 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent" ><com.wyl.example.MyCoverFlowandroid:id="@+id/Mcf"android:layout_width="fill_parent"android:layout_height="wrap_content"/></LinearLayout>public class MyCoverFlow extends Gallery {private Camera camera = new Camera();private int maxRotation = 60;private int zoom = -120;private int center;public MyCoverFlow(Context context) {super(context);this.setStaticTransformationsEnabled(true);}public MyCoverFlow(Context context, AttributeSet attrs) {super(context, attrs);this.setStaticTransformationsEnabled(true);}public MyCoverFlow(Context context, AttributeSet attrs, int defStyle) {super(context, attrs, defStyle);this.setStaticTransformationsEnabled(true);}private int getCenter() {return (getWidth() - getPaddingLeft() - getPaddingRight()) / 2+ getPaddingLeft();}private int getCenterOfView(View view) {return view.getLeft() + view.getWidth() / 2;}protected boolean getChildStaticTransformation(View child, Transformation trans) {final int childCenter = getCenterOfView(child);final int childWidth = child.getWidth();int rotationAngle = 0;trans.clear();trans.setTransformationType(Transformation.TYPE_MATRIX);if (childCenter == center) {setTransImage((ImageView) child, trans, 0);} else {rotationAngle = (int) (((float) (center - childCenter) / childWidth) * maxRotation);if (Math.abs(rotationAngle) > maxRotation) {rotationAngle = (rotationAngle < 0) ? -maxRotation: maxRotation;}setTransImage((ImageView) child, trans, rotationAngle);}return true;}protected void onSizeChanged(int w, int h, int oldw, int oldh) {center = getCenter();super.onSizeChanged(w, h, oldw, oldh);}private void setTransImage(ImageView child, Transformation t,int rotationAngle) {camera.save();final Matrix imageMatrix = t.getMatrix();final int imageHeight = child.getLayoutParams().height;final int imageWidth = child.getLayoutParams().width;final int rotation = Math.abs(rotationAngle);camera.translate(0.0f, 0.0f, 100.0f);if (rotation < maxRotation) {float zoomAmount = (float) (zoom + (rotation * 1.5));camera.translate(0.0f, 0.0f, zoomAmount);}camera.rotateY(rotationAngle);camera.getMatrix(imageMatrix);imageMatrix.preTranslate(-(imageWidth / 2), -(imageHeight / 2));imageMatrix.postTranslate((imageWidth / 2), (imageHeight / 2));camera.restore();}}public class MainActivity extends Activity {private Integer[] imgs = { R.drawable.b1,R.drawable.b2, R.drawable.b3,R.drawable.b4, R.drawable.b5,R.drawable.b6 };private MyCoverFlow CoverFlow;public void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);setCoverFlow();}private void setCoverFlow() {ImgsAdapter adapter = new ImgsAdapter(this, imgs);adapter.invertedImages();CoverFlow = (MyCoverFlow) findViewById(R.id.Mcf);CoverFlow.setAdapter(adapter);}}public class ImgsAdapter extends BaseAdapter {private Context context;private Integer[] ImagIds;private ImageView[] Images;public ImgsAdapter(Context c, Integer[] ImageIds) {context = c;ImagIds = ImageIds;Images = new ImageView[ImagIds.length];}public boolean invertedImages() {final int reflectionGap = 4;int index = 0;for (int imageId : ImagIds) {Bitmap originalImage = BitmapFactory.decodeResource(context.getResources(), imageId);int width = originalImage.getWidth();int height = originalImage.getHeight();Matrix matrix = new Matrix();matrix.preScale(1, -1);Bitmap reflectionImage = Bitmap.createBitmap(originalImage, 0,height / 2, width, height / 2, matrix, false);Bitmap bitmapWithReflection = Bitmap.createBitmap(width,(height + height / 2), Config.ARGB_8888);Canvas canvas = new Canvas(bitmapWithReflection);canvas.drawBitmap(originalImage, 0, 0, null);Paint deafaultPaint = new Paint();canvas.drawRect(0, height, width, height + reflectionGap,deafaultPaint);canvas.drawBitmap(reflectionImage, 0, height + reflectionGap, null);Paint paint = new Paint();LinearGradient shader = new LinearGradient(0, originalImage.getHeight(), 0, bitmapWithReflection.getHeight()+ reflectionGap, 0x70ffffff, 0x00ffffff, TileMode.CLAMP);paint.setShader(shader);paint.setXfermode(new PorterDuffXfermode(Mode.DST_IN));canvas.drawRect(0, height, width, bitmapWithReflection.getHeight()+ reflectionGap, paint);ImageView imageView = new ImageView(context);imageView.setImageBitmap(bitmapWithReflection);imageView.setLayoutParams(new Gallery.LayoutParams(100, 200));Images[index++] = imageView;}return true;}public int getCount() {return ImagIds.length;}public Object getItem(int position) {return position;}public long getItemId(int position) {return position;}public View getView(int position, View convertView, ViewGroup parent) {return Images[position];}}
//菜单弹出效果 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"android:orientation="vertical"><TextView android:layout_width="match_parent"android:layout_height="match_parent"android:text="请按键盘物理菜单键，弹出选项菜单"/></LinearLayout>public class MainActivity extends Activity {private final static int Menu_1 = Menu.FIRST;private final static int Menu_2 = Menu.FIRST + 1;private final static int Menu_3 = Menu.FIRST + 2;private final static int Menu_4 = Menu.FIRST + 3;private final static int Menu_5 = Menu.FIRST + 4;private final static int Menu_6 = Menu.FIRST + 5;private final static int Menu_7 = Menu.FIRST + 6;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState); // 调用父类的onCreate方法setContentView(R.layout.activity_main);}public boolean onCreateOptionsMenu(Menu m) {m.add(0, Menu_1, 0, "编辑模式"); m.add(0, Menu_2, 0, "修改壁纸");m.add(0, Menu_3, 0, "全局搜索");m.add(0, Menu_4, 0, "桌面缩略图");m.add(0, Menu_5, 0, "桌面效果");m.add(0, Menu_6, 0, "系统设置");m.add(0, Menu_7, 0, "用户信息");return super.onCreateOptionsMenu(m);}public boolean onOptionsItemSelected(MenuItem item) {switch (item.getItemId()) {case 1:Toast.makeText(this, "你点击了编辑模式选项", Toast.LENGTH_SHORT).show();break;case 2:Toast.makeText(this, "你点击了修改壁纸", Toast.LENGTH_SHORT).show();break;case 3:Toast.makeText(this, "你点击了全局搜索", Toast.LENGTH_SHORT).show();break;case 4:Toast.makeText(this, "你点击了桌面缩略图", Toast.LENGTH_SHORT).show();break;case 5:Toast.makeText(this, "你点击了桌面效果", Toast.LENGTH_SHORT).show();break;case 6:Toast.makeText(this, "你点击了系统设置", Toast.LENGTH_SHORT).show();break;case 7:Toast.makeText(this, "你点击了用户信息", Toast.LENGTH_SHORT).show();break;}return super.onOptionsItemSelected(item);}public void onOptionsMenuClosed(Menu menu) {Log.e("onOptionsMenuClosed","用户菜单关闭了");}public boolean onPrepareOptionsMenu(Menu menu) {Log.e("onPrepareOptionsMenu","用户菜单准备好被显示了");return true;}}
//打开文件的子菜单效果 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"android:orientation="vertical"><TextView android:layout_width="match_parent"android:layout_height="match_parent"android:text="请点击物理菜单键显示菜单，再次点击菜单选项显示子菜单"/></LinearLayout>public class MainActivity extends Activity {final int Menu_1 = Menu.FIRST;final int Menu_2 = Menu.FIRST + 1;final int Menu_3 = Menu.FIRST + 2;final int Menu_4 = Menu.FIRST + 3;final int Menu_5 = Menu.FIRST + 4;final int Menu_6 = Menu.FIRST + 5;final int Menu_7 = Menu.FIRST + 6;final int Menu_8 = Menu.FIRST + 7;final int Menu_9 = Menu.FIRST + 8;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState); // 调用父类的onCreate方法setContentView(R.layout.activity_main);}public boolean onCreateOptionsMenu(Menu m) {SubMenu fileMenu = m.addSubMenu("新建");fileMenu.add(0, Menu_1, 0, "文件1"); fileMenu.add(0, Menu_2, 0, "文件2");fileMenu.add(0, Menu_3, 0, "文件3");SubMenu openMenu = m.addSubMenu("打开");openMenu.add(0, Menu_4, 0, "文件4"); openMenu.add(0, Menu_5, 0, "文件5");openMenu.add(0, Menu_6, 0, "文件6");SubMenu saveMenu = m.addSubMenu("保存");saveMenu.add(0, Menu_7, 0, "文件7"); saveMenu.add(0, Menu_8, 0, "文件8");saveMenu.add(0, Menu_9, 0, "文件9");return super.onCreateOptionsMenu(m);}public boolean onOptionsItemSelected(MenuItem item) {switch (item.getItemId()) {case 1:Toast.makeText(this, "新建文件1", Toast.LENGTH_SHORT).show();break;case 2:Toast.makeText(this, "新建文件2", Toast.LENGTH_SHORT).show();break;case 3:Toast.makeText(this, "新建文件3", Toast.LENGTH_SHORT).show();break;case 4:Toast.makeText(this, "打开文件4", Toast.LENGTH_SHORT).show();break;case 5:Toast.makeText(this, "打开文件5", Toast.LENGTH_SHORT).show();break;case 6:Toast.makeText(this, "打开文件6", Toast.LENGTH_SHORT).show();break;case 7:Toast.makeText(this, "保存文件7", Toast.LENGTH_SHORT).show();break;case 8:Toast.makeText(this, "保存文件8", Toast.LENGTH_SHORT).show();break;case 9:Toast.makeText(this, "保存文件9", Toast.LENGTH_SHORT).show();break;}return super.onOptionsItemSelected(item);}}
//文本框的复制粘贴全选菜单 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"android:orientation="vertical"><TextView android:layout_width="match_parent"android:layout_height="match_parent"android:text="请点击物理菜单键显示菜单，再次点击菜单选项显示子菜单"/></LinearLayout>public class MainActivity extends Activity {final int Menu_1 = Menu.FIRST;final int Menu_2 = Menu.FIRST + 1;final int Menu_3 = Menu.FIRST + 2;final int Menu_4 = Menu.FIRST + 3;final int Menu_5 = Menu.FIRST + 4;final int Menu_6 = Menu.FIRST + 5;final int Menu_7 = Menu.FIRST + 6;final int Menu_8 = Menu.FIRST + 7;final int Menu_9 = Menu.FIRST + 8;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState); // 调用父类的onCreate方法setContentView(R.layout.activity_main);}public boolean onCreateOptionsMenu(Menu m) {SubMenu fileMenu = m.addSubMenu("新建");fileMenu.add(0, Menu_1, 0, "文件1"); fileMenu.add(0, Menu_2, 0, "文件2");fileMenu.add(0, Menu_3, 0, "文件3");SubMenu openMenu = m.addSubMenu("打开");openMenu.add(0, Menu_4, 0, "文件4"); openMenu.add(0, Menu_5, 0, "文件5");openMenu.add(0, Menu_6, 0, "文件6");SubMenu saveMenu = m.addSubMenu("保存");saveMenu.add(0, Menu_7, 0, "文件7"); saveMenu.add(0, Menu_8, 0, "文件8");saveMenu.add(0, Menu_9, 0, "文件9");return super.onCreateOptionsMenu(m);}public boolean onOptionsItemSelected(MenuItem item) {switch (item.getItemId()) {case 1:Toast.makeText(this, "新建文件1", Toast.LENGTH_SHORT).show();break;case 2:Toast.makeText(this, "新建文件2", Toast.LENGTH_SHORT).show();break;case 3:Toast.makeText(this, "新建文件3", Toast.LENGTH_SHORT).show();break;case 4:Toast.makeText(this, "打开文件4", Toast.LENGTH_SHORT).show();break;case 5:Toast.makeText(this, "打开文件5", Toast.LENGTH_SHORT).show();break;case 6:Toast.makeText(this, "打开文件6", Toast.LENGTH_SHORT).show();break;case 7:Toast.makeText(this, "保存文件7", Toast.LENGTH_SHORT).show();break;case 8:Toast.makeText(this, "保存文件8", Toast.LENGTH_SHORT).show();break;case 9:Toast.makeText(this, "保存文件9", Toast.LENGTH_SHORT).show();break;}return super.onOptionsItemSelected(item);}}
//仿UC浏览器的伪菜单效果 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><GridViewandroid:id="@+id/Gv"android:layout_width="fill_parent"android:layout_height="fill_parent"android:gravity="center"android:horizontalSpacing="15dip"android:numColumns="3"android:stretchMode="columnWidth"android:background="@android:color/black"android:verticalSpacing="15dip" /></LinearLayout><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="wrap_content"android:orientation="vertical"><ImageViewandroid:id="@+id/Iv"android:layout_width="40dip"android:layout_height="40dip"android:layout_gravity="center"/><TextViewandroid:id="@+id/Tv"android:layout_width="match_parent"android:layout_height="wrap_content"android:gravity="center"android:textColor="@android:color/white"android:text="选项" /></LinearLayout><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"android:orientation="vertical"><TextViewandroid:layout_width="match_parent"android:layout_height="wrap_content"android:text="点击Menu物理键，弹出自定义菜单"/></LinearLayout>public class MainActivity extends Activity {private AlertDialog Dia; private GridView Gv; private View view; private final int ITEM_1 = 0; private final int ITEM_2 = 1; private final int ITEM_3 = 2; private final int ITEM_4 = 3; private final int ITEM_5 = 4; private final int ITEM_6 = 5; private final int ITEM_7 = 6; private final int ITEM_8 = 7; private final int ITEM_9 = 8; private List<Item> li = new ArrayList<Item>();@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState); setContentView(R.layout.activity_main);setData();setMenuView();}private void setData() {li.add(new Item(R.drawable.m1, "搜索"));li.add(new Item(R.drawable.m2, "文件管理"));li.add(new Item(R.drawable.m3, "下载管理"));li.add(new Item(R.drawable.m4, "全屏"));li.add(new Item(R.drawable.m5, "网址"));li.add(new Item(R.drawable.m6, "书签"));li.add(new Item(R.drawable.m7, "加入书签"));li.add(new Item(R.drawable.m8, "分享"));li.add(new Item(R.drawable.m9, "退出"));}private void setMenuView() {view = View.inflate(this, R.layout.menu_layout, null);Dia = new AlertDialog.Builder(this).create();Dia.setView(view);Dia.setOnKeyListener(new OnKeyListener() {public boolean onKey(DialogInterface dialog, int keyCode,KeyEvent event) {if (keyCode == KeyEvent.KEYCODE_MENU)dialog.dismiss();return false;}});GvAdapter gva = new GvAdapter(this, li);Gv = (GridView) view.findViewById(R.id.Gv);Gv.setAdapter(gva);Gv.setOnItemClickListener(new OnItemClickListener() {public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,long arg3) {switch (arg2) {case ITEM_1:Toast.makeText(MainActivity.this,"您选择了搜索选项",Toast.LENGTH_SHORT).show();break;case ITEM_2:Toast.makeText(MainActivity.this,"您选择了文件管理",Toast.LENGTH_SHORT).show();break;case ITEM_3:Toast.makeText(MainActivity.this,"您选择了下载管理",Toast.LENGTH_SHORT).show();break;case ITEM_4:Toast.makeText(MainActivity.this,"您选择了全屏",Toast.LENGTH_SHORT).show();break;case ITEM_5:Toast.makeText(MainActivity.this,"您选择了网址",Toast.LENGTH_SHORT).show();break;case ITEM_6:Toast.makeText(MainActivity.this,"您选择了书签",Toast.LENGTH_SHORT).show();break;case ITEM_7:Toast.makeText(MainActivity.this,"您选择了加入书签",Toast.LENGTH_SHORT).show();break;case ITEM_8:Toast.makeText(MainActivity.this,"您选择了分享",Toast.LENGTH_SHORT).show();break;case ITEM_9:Toast.makeText(MainActivity.this,"您选择了退出",Toast.LENGTH_SHORT).show();break;}Dia.dismiss();}});}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {menu.add("menu");//必须创建一项return super.onCreateOptionsMenu(menu);}@Overridepublic boolean onMenuOpened(int featureId, Menu menu) {if (Dia == null) {Dia = new AlertDialog.Builder(this).setView(view).show();} else {Dia.show();}return false;}}public class Item {public int itemImg; public String itemTitle; public Item(int itemImg, String itemTitle) {super();this.itemImg = itemImg;this.itemTitle = itemTitle;}}public class GvAdapter extends BaseAdapter {private Context mContext;private List<Item> fileList;public GvAdapter(Context c,List<Item> fl) {mContext = c;fileList = fl;}@Overridepublic int getCount() {return fileList.size();}@Overridepublic Object getItem(int position) {return fileList.get(position);}@Overridepublic long getItemId(int position) {return position;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {ViewHolder viewholder =new ViewHolder();if (convertView == null) {convertView = LayoutInflater.from(mContext).inflate(R.layout.menu_item, null);}viewholder.fileImage = (ImageView) convertView.findViewById(R.id.Iv);viewholder.fileName = (TextView) convertView.findViewById(R.id.Tv);viewholder.fileImage.setBackgroundResource(fileList.get(position).itemImg);viewholder.fileName.setText(fileList.get(position).itemTitle);return convertView;}class ViewHolder {ImageView fileImage;TextView fileName;}}
//PopupMenu效果 <resources><string name="app_name">Example03_43</string><string name="send">发送邮件</string><string name="look">阅读邮件</string><string name="delete">删除邮件</string></resources><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"android:orientation="vertical"><TextViewandroid:id="@+id/Tv"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="点击此TextView，显示PopupMenu"/></LinearLayout>public class MainActivity extends Activity {private TextView Tv;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState); // 调用父类的onCreate方法setContentView(R.layout.activity_main);findView();setListener();}private void findView() {Tv = (TextView)findViewById(R.id.Tv);}private void setListener() {Tv.setOnClickListener(mylistener);}OnClickListener mylistener = new OnClickListener() {@Overridepublic void onClick(View v) {PopupMenu popup = new PopupMenu(MainActivity.this, v);popup.getMenuInflater().inflate(R.menu.main, popup.getMenu());popup.setOnMenuItemClickListener(new OnMenuItemClickListener() {@Overridepublic boolean onMenuItemClick(MenuItem item) {Toast.makeText(getBaseContext(), "你选择了：" + item.getTitle(), Toast.LENGTH_SHORT).show();return true;}});popup.show();}};}
//PopupWindow效果 public class MainActivity extends Activity {private TextView Tv;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState); // 调用父类的onCreate方法setContentView(R.layout.activity_main);findView();setListener();}private void findView() {Tv = (TextView)findViewById(R.id.Tv);}private void setListener() {Tv.setOnClickListener(mylistener);}OnClickListener mylistener = new OnClickListener() {@Overridepublic void onClick(View v) {LayoutInflater lif = (LayoutInflater) (MainActivity.this).getSystemService(LAYOUT_INFLATER_SERVICE);View poplayout = lif.inflate(R.layout.activity_popup, null);PopupWindow popwindow = new PopupWindow(poplayout,LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);popwindow.setBackgroundDrawable(new BitmapDrawable());popwindow.setFocusable(true);popwindow.setOutsideTouchable(true);popwindow.showAtLocation(findViewById(R.id.LlMain), Gravity.CENTER,0, 0);}};}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="wrap_content"android:layout_height="wrap_content"android:gravity="center_horizontal"android:background="@android:color/background_dark"android:orientation="vertical" ><EditText android:layout_width="match_parent"android:layout_height="wrap_content"android:textColor="@android:color/white"android:hint="请输入用户名："/><EditText android:layout_width="match_parent"android:layout_height="wrap_content"android:textColor="@android:color/white"android:hint="请输入密码："/><Buttonandroid:id="@+id/BtnLogin"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="登录" /><Buttonandroid:id="@+id/BtnExit"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="退出"/></LinearLayout><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/LlMain" android:layout_width="match_parent"android:layout_height="match_parent"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"android:orientation="vertical"><TextViewandroid:id="@+id/Tv"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="点击此TextView，显示登录PopupWindow"/></LinearLayout>
//QQ客户端的标签栏效果 <TabHost xmlns:android="http://schemas.android.com/apk/res/android"android:id="@android:id/tabhost"android:layout_width="fill_parent"android:layout_height="fill_parent" ><LinearLayoutandroid:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TabWidgetandroid:id="@android:id/tabs"android:layout_width="fill_parent"android:layout_height="wrap_content" /><FrameLayoutandroid:id="@android:id/tabcontent"android:layout_width="fill_parent"android:layout_height="fill_parent"android:padding="5dp" /></LinearLayout></TabHost>//activity_mydiscussion_item<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="horizontal" ><ImageViewandroid:id="@+id/Iv"android:layout_width="wrap_content"android:layout_height="match_parent"android:scaleType="fitXY" /><LinearLayoutandroid:layout_width="match_parent"android:layout_height="match_parent"android:layout_marginLeft="10dip"android:orientation="vertical" ><TextViewandroid:id="@+id/TvTitle"android:layout_width="wrap_content"android:layout_height="wrap_content"android:gravity="left"android:textColor="@color/blue"android:textSize="20sp" /><TextViewandroid:id="@+id/TvInfo"android:layout_width="match_parent"android:layout_height="wrap_content"android:gravity="left"android:textColor="@color/blue"android:textSize="10sp" /></LinearLayout></LinearLayout>//activity_mydiscussion<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent" ><ListView android:id="@+id/LvDiscussion"android:layout_width="match_parent"android:layout_height="match_parent"/></LinearLayout>//activity_myfriend_item<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="horizontal" ><ImageViewandroid:id="@+id/Iv"android:layout_width="wrap_content"android:layout_height="match_parent" /><TextViewandroid:id="@+id/TvTitle"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginLeft="10dip"android:gravity="left"android:textColor="@color/blue"android:textSize="20sp" /><TextViewandroid:id="@+id/TvInfo"android:layout_width="match_parent"android:layout_height="wrap_content"android:gravity="right"android:textColor="@color/blue"android:textSize="10sp" /></LinearLayout>//activity_myfriend<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent" ><ListView android:id="@+id/LvFirend"android:layout_width="match_parent"android:layout_height="match_parent"/></LinearLayout>//activity_mygroup_item<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="horizontal" ><ImageViewandroid:id="@+id/Iv"android:layout_width="wrap_content"android:layout_height="match_parent"android:scaleType="fitXY" /><LinearLayoutandroid:layout_width="match_parent"android:layout_height="match_parent"android:layout_marginLeft="10dip"android:orientation="vertical" ><TextViewandroid:id="@+id/TvTitle"android:layout_width="wrap_content"android:layout_height="wrap_content"android:gravity="left"android:textColor="@color/blue"android:textSize="20sp" /><TextViewandroid:id="@+id/TvInfo"android:layout_width="match_parent"android:layout_height="wrap_content"android:gravity="left"android:textColor="@color/blue"android:textSize="10sp" /></LinearLayout></LinearLayout>//activity_mygroup<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent" ><ListView android:id="@+id/LvGroup"android:layout_width="match_parent"android:layout_height="match_parent"/></LinearLayout>//com.wyl.examplepublic class MainActivity extends TabActivity {@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);TabHost tabHost = getTabHost();TabHost.TabSpec spec;Intent i;i = new Intent(this, MyFriendActivity.class);spec = tabHost.newTabSpec("0").setIndicator("好友").setContent(i);tabHost.addTab(spec);i = new Intent(this, MyGroupActivity.class);spec = tabHost.newTabSpec("1").setIndicator("群").setContent(i);tabHost.addTab(spec);i = new Intent(this, MyDiscussionActivity.class);spec = tabHost.newTabSpec("2").setIndicator("讨论组").setContent(i);tabHost.addTab(spec);tabHost.setCurrentTab(1);}}public class MyDiscussionActivity extends Activity {private ListView LvFriend;private MyDiscussionListAdapter adapter;private List<MyDiscussion> l = new ArrayList<MyDiscussion>();public void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_mygroup);getData();LvFriend = (ListView) findViewById(R.id.LvGroup);adapter = new MyDiscussionListAdapter(MyDiscussionActivity.this, l);LvFriend.setAdapter(adapter);}private void getData() {l.add(new MyDiscussion("临时讨论组", R.drawable.dicussion, "张三，李四，王五"));l.add(new MyDiscussion("项目研讨组", R.drawable.dicussion, "赵六，刘八，池塘的花"));l.add(new MyDiscussion("自定义讨论组", R.drawable.dicussion,"shune，黑暗骑士，白雪"));l.add(new MyDiscussion("课程讨论组", R.drawable.dicussion, "A1，blue，李经理"));}}public class MyFriendActivity extends Activity {private ListView LvFriend;private MyFriendListAdapter adapter;private List<MyFriend> list = new ArrayList<MyFriend>();public void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_myfriend);getData();LvFriend = (ListView)findViewById(R.id.LvFirend);adapter = new MyFriendListAdapter(MyFriendActivity.this, list);LvFriend.setAdapter(adapter);}private void getData() {list.add(new MyFriend("在线好友", R.drawable.arrow, "42"));list.add(new MyFriend("我的好友", R.drawable.arrow, "33"));list.add(new MyFriend("工作好友", R.drawable.arrow, "45"));list.add(new MyFriend("同学好友", R.drawable.arrow, "87"));}}public class MyGroupActivity extends Activity {private ListView LvGroup;private MyGroupListAdapter adapter;private List<MyGroup> l = new ArrayList<MyGroup>();public void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_mygroup);getData();LvGroup = (ListView) findViewById(R.id.LvGroup);adapter = new MyGroupListAdapter(MyGroupActivity.this, l);LvGroup.setAdapter(adapter);}private void getData() {l.add(new MyGroup("工作群", R.drawable.group, "讨论工作中的事情"));l.add(new MyGroup("学习群", R.drawable.group, "分享最新学习信息"));l.add(new MyGroup("游戏群", R.drawable.group, "游戏共享"));l.add(new MyGroup("影视群", R.drawable.group, "最新影评"));}}//com.wyl.example.adapterpublic class MyDiscussionListAdapter extends BaseAdapter {private LayoutInflater mInflater;private List<MyDiscussion> list = new ArrayList<MyDiscussion>();private Context context;public MyDiscussionListAdapter(Context c, List<MyDiscussion> l) {context = c;list = l;}class ViewHolder {ImageView Image;TextView Name;TextView Number;}@Overridepublic int getCount() {return list.size();}@Overridepublic Object getItem(int position) {return list.get(position);}@Overridepublic long getItemId(int position) {return position;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {ViewHolder viewholder = null;if (convertView == null) {convertView = LayoutInflater.from(context).inflate(R.layout.activity_mydiscussion_item, null);viewholder = new ViewHolder();viewholder.Image = (ImageView) convertView.findViewById(R.id.Iv);viewholder.Name = (TextView) convertView.findViewById(R.id.TvTitle);viewholder.Number = (TextView) convertView.findViewById(R.id.TvInfo);convertView.setTag(viewholder);} else {viewholder = (ViewHolder) convertView.getTag();}viewholder.Image.setBackgroundResource(list.get(position).ImgId);viewholder.Name.setText(list.get(position).Name);viewholder.Number.setText(list.get(position).Info);return convertView;}}public class MyFriendListAdapter extends BaseAdapter {private LayoutInflater mInflater;private List<MyFriend> list = new ArrayList<MyFriend>();private Context context;public MyFriendListAdapter(Context c, List<MyFriend> l) {context = c;list = l;}class ViewHolder {ImageView Image;TextView Name;TextView Number;}@Overridepublic int getCount() {return list.size();}@Overridepublic Object getItem(int position) {return list.get(position);}@Overridepublic long getItemId(int position) {return position;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {ViewHolder viewholder = null;if (convertView == null) {convertView = LayoutInflater.from(context).inflate(R.layout.activity_myfriend_item, null);viewholder = new ViewHolder();viewholder.Image = (ImageView) convertView.findViewById(R.id.Iv);viewholder.Name = (TextView) convertView.findViewById(R.id.TvTitle);viewholder.Number = (TextView) convertView.findViewById(R.id.TvInfo);convertView.setTag(viewholder);} else {viewholder = (ViewHolder) convertView.getTag();}viewholder.Image.setBackgroundResource(list.get(position).ImgId);viewholder.Name.setText(list.get(position).Name);viewholder.Number.setText(list.get(position).Info);return convertView;}}public class MyGroupListAdapter extends BaseAdapter {private LayoutInflater mInflater;private List<MyGroup> list = new ArrayList<MyGroup>();private Context context;public MyGroupListAdapter(Context c, List<MyGroup> l) {context = c;list = l;}class ViewHolder {ImageView Image;TextView Name;TextView Number;}@Overridepublic int getCount() {return list.size();}@Overridepublic Object getItem(int position) {return list.get(position);}@Overridepublic long getItemId(int position) {return position;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {ViewHolder viewholder = null;if (convertView == null) {convertView = LayoutInflater.from(context).inflate(R.layout.activity_mygroup_item, null);viewholder = new ViewHolder();viewholder.Image = (ImageView) convertView.findViewById(R.id.Iv);viewholder.Name = (TextView) convertView.findViewById(R.id.TvTitle);viewholder.Number = (TextView) convertView.findViewById(R.id.TvInfo);convertView.setTag(viewholder);} else {viewholder = (ViewHolder) convertView.getTag();}viewholder.Image.setBackgroundResource(list.get(position).ImgId);viewholder.Name.setText(list.get(position).Name);viewholder.Number.setText(list.get(position).Info);return convertView;}}//com.wyl.example.moudlepublic class MyDiscussion {public String Name; public int ImgId; public String Info; public MyDiscussion() {super();}public MyDiscussion(String n, int imgId, String info) {super();Name = n;ImgId = imgId;Info = info;}}public class MyFriend {public String Name; public int ImgId; public String Info; public MyFriend() {super();}public MyFriend(String n, int imgId, String info) {super();Name = n;ImgId = imgId;Info = info;}}public class MyGroup {public String Name; public int ImgId; public String Info; public MyGroup() {super();}public MyGroup(String n, int imgId, String info) {super();Name = n;ImgId = imgId;Info = info;}}
//仿新浪微博的主页效果 public class FiveActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);this.setContentView(R.layout.activity_five);}}public class FourActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);this.setContentView(R.layout.activity_four);}}public class MainActivity extends TabActivity implements OnCheckedChangeListener{private TabHost mHost;private RadioGroup radioderGroup;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);mHost=this.getTabHost();mHost.addTab(mHost.newTabSpec("ONE").setIndicator("ONE").setContent(new Intent(this,OneActivity.class)));mHost.addTab(mHost.newTabSpec("TWO").setIndicator("TWO").setContent(new Intent(this,TwoActivity.class)));mHost.addTab(mHost.newTabSpec("THREE").setIndicator("THREE").setContent(new Intent(this,ThreeActivity.class)));mHost.addTab(mHost.newTabSpec("FOUR").setIndicator("FOUR").setContent(new Intent(this,FourActivity.class)));mHost.addTab(mHost.newTabSpec("FIVE").setIndicator("FIVE").setContent(new Intent(this,FiveActivity.class)));radioderGroup = (RadioGroup) findViewById(R.id.main_radio);radioderGroup.setOnCheckedChangeListener(this);}@Overridepublic void onCheckedChanged(RadioGroup group, int checkedId) {switch(checkedId){case R.id.radio_button0:mHost.setCurrentTabByTag("ONE");break;case R.id.radio_button1:mHost.setCurrentTabByTag("TWO");break;case R.id.radio_button2:mHost.setCurrentTabByTag("THREE");break;case R.id.radio_button3:mHost.setCurrentTabByTag("FOUR");break;case R.id.radio_button4:mHost.setCurrentTabByTag("FIVE");break;} }}public class OneActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);this.setContentView(R.layout.activity_one);}}public class ThreeActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);this.setContentView(R.layout.activity_three);}}public class TwoActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);this.setContentView(R.layout.activity_two);}}//activity_five<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:orientation="vertical"android:layout_width="fill_parent"android:layout_height="fill_parent"><TextView android:layout_width="fill_parent"android:layout_height="wrap_content"android:gravity="center"android:text="这是设置Activity"/></LinearLayout>//activity_four<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:orientation="vertical"android:layout_width="fill_parent"android:layout_height="fill_parent"><TextView android:layout_width="fill_parent"android:layout_height="wrap_content"android:gravity="center"android:text="这是音乐Activity"/></LinearLayout>//activity_main<TabHost xmlns:android="http://schemas.android.com/apk/res/android"android:id="@android:id/tabhost"android:layout_width="fill_parent"android:layout_height="fill_parent" ><LinearLayout android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"><FrameLayout android:id="@android:id/tabcontent" android:layout_width="fill_parent" android:layout_height="0.0dip" android:layout_weight="1.0" /><TabWidget android:id="@android:id/tabs" android:visibility="gone" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="0.0" /><RadioGroup android:gravity="center_vertical" android:layout_gravity="bottom" android:orientation="horizontal" android:id="@+id/main_radio" android:background="@drawable/maintab_toolbar_bg" android:layout_width="fill_parent" android:layout_height="wrap_content"><RadioButton android:id="@+id/radio_button0" android:tag="radio_button0" android:layout_marginTop="2.0dip" android:text="@string/friend" android:drawableTop="@drawable/icon_1" style="@style/main_tab_bottom" /><RadioButton android:id="@+id/radio_button1" android:tag="radio_button1" android:layout_marginTop="2.0dip" android:text="@string/cast" android:drawableTop="@drawable/icon_2" style="@style/main_tab_bottom" /><RadioButton android:id="@+id/radio_button2" android:tag="radio_button2" android:layout_marginTop="2.0dip" android:text="@string/main" android:drawableTop="@drawable/icon_3" style="@style/main_tab_bottom" /><RadioButton android:id="@+id/radio_button3" android:tag="radio_button3" android:layout_marginTop="2.0dip" android:text="@string/msg" android:drawableTop="@drawable/icon_4" style="@style/main_tab_bottom" /><RadioButton android:id="@+id/radio_button4" android:tag="radio_button4" android:layout_marginTop="2.0dip" android:text="@string/more" android:drawableTop="@drawable/icon_5" style="@style/main_tab_bottom" /></RadioGroup></LinearLayout></TabHost>//activity_one<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:gravity="top|center"android:orientation="vertical" ><TextView android:layout_width="fill_parent"android:layout_height="wrap_content"android:gravity="center"android:text="这是时间Activity"/></LinearLayout>//activity_three<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:orientation="vertical"android:layout_width="fill_parent"android:layout_height="fill_parent"><TextView android:layout_width="fill_parent"android:layout_height="wrap_content"android:gravity="center"android:text="这是图片Activity"/></LinearLayout>//activity_two<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:orientation="vertical"android:layout_width="fill_parent"android:layout_height="fill_parent"><TextView android:layout_width="fill_parent"android:layout_height="wrap_content"android:gravity="center"android:text="这是信息Activity"/></LinearLayout>
//程序退出的对话框 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent" ><TextViewandroid:layout_width="fill_parent"android:layout_height="fill_parent"android:text="点击物理返回键弹出退出对话框" /></LinearLayout>public class MainActivity extends Activity {@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);}protected void creatdialog() {AlertDialog.Builder b = new Builder(MainActivity.this);b.setMessage("确认退出吗？");b.setTitle("提示");b.setPositiveButton("确认", new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {dialog.dismiss();MainActivity.this.finish();}});b.setNegativeButton("取消", new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {dialog.dismiss();}});b.create().show();}public boolean onKeyDown(int keyCode, KeyEvent event) {if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0) {creatdialog();}return false;}}
//程序的关于对话框 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent" ><TextViewandroid:layout_width="fill_parent"android:layout_height="fill_parent"android:text="点击物理菜单键弹出关于对话框" /></LinearLayout>public class MainActivity extends Activity {@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);}protected void creatdialog() {AlertDialog.Builder builder = new Builder(MainActivity.this);builder.setMessage("本程序是V1.0版本，如有问题请及时提出！");TextView tv = new TextView(MainActivity.this);tv.setGravity(android.view.Gravity.CENTER_HORIZONTAL);tv.setText("关于");tv.setTextSize(30);AlertDialog a = builder.create();a.setCustomTitle(tv);a.show();}public boolean onKeyDown(int keyCode, KeyEvent event) {if (keyCode == KeyEvent.KEYCODE_MENU && event.getRepeatCount() == 0) {creatdialog();}return false;}}
//电话服务评价对话框 public class MainActivity extends Activity {private TextView Tv;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);Tv = (TextView)findViewById(R.id.Tv);}protected void creatdialog() {Dialog dialog = new AlertDialog.Builder(this).setIcon(android.R.drawable.btn_dialog).setTitle("评价对话框").setMessage("请对我的服务进行评价：").setPositiveButton("很好", new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {Tv.setText("很好");}}).setNegativeButton("一般", new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {Tv.setText("一般");}}).setNeutralButton("有待改进", new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {Tv.setText("有待改进");}}).create();dialog.show();}public boolean onKeyDown(int keyCode, KeyEvent event) {if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0) {creatdialog();}return false;}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent" ><TextViewandroid:id="@+id/Tv"android:layout_width="fill_parent"android:layout_height="fill_parent"android:text="点击物理返回键弹出评价对话框" /></LinearLayout>
//数据加载成功的提示 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent" ><TextViewandroid:id="@+id/Tv"android:layout_width="fill_parent"android:layout_height="fill_parent"android:text="等待数据加载......" /></LinearLayout>public class MainActivity extends Activity {private TextView Tv;private final int HANDLER_TEST = 0;private Handler h = new Handler(){@Overridepublic void handleMessage(Message msg) {super.handleMessage(msg);switch (msg.what) {case HANDLER_TEST:Toast.makeText(MainActivity.this, "数据加载完毕", Toast.LENGTH_SHORT).show();Tv.setText("数据加载完毕");break;}}};@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);Tv = (TextView)findViewById(R.id.Tv);new Thread(){@Overridepublic void run() {super.run();try {sleep(5000);} catch (InterruptedException e) {e.printStackTrace();}Message msg = new Message();msg.what = HANDLER_TEST;h.sendMessage(msg);}}.start();}}
//网络图片加载成功的提示 public class MainActivity extends Activity {private ImageView Iv;private final int SUCCESS = 0;private final int FAILED = 1;private final String url = "http://www.baidu.com/img/shouye_b5486898c692066bd2cbaeda86d74448.gif";private Bitmap bit = null;private Handler h = new Handler(){@Overridepublic void handleMessage(Message msg) {super.handleMessage(msg);switch (msg.what) {case SUCCESS:Toast.makeText(MainActivity.this, "图片加载成功！", Toast.LENGTH_SHORT).show();Iv.setImageBitmap(bit);break;case FAILED:Toast.makeText(MainActivity.this, "数据加载失败！", Toast.LENGTH_SHORT).show();break;}}};@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);Iv = (ImageView)findViewById(R.id.Iv);if (isOpenNetwork()) {new Thread(){@Overridepublic void run() {super.run();try {bit = getRemoteImage(new URL(url));} catch (MalformedURLException e) {e.printStackTrace();}if (bit != null) {Message msg = new Message();msg.what = SUCCESS;h.sendMessage(msg);}else{Message msg = new Message();msg.what = FAILED;h.sendMessage(msg);}}}.start();}else{Toast.makeText(MainActivity.this, "网络不通！", Toast.LENGTH_SHORT).show();}}public Bitmap getRemoteImage(final URL aURL) {try {final URLConnection conn = aURL.openConnection();conn.connect();final BufferedInputStream bis = new BufferedInputStream(conn.getInputStream());final Bitmap bm = BitmapFactory.decodeStream(bis);bis.close();return bm;} catch (IOException e) {Log.d("DEBUGTAG", "Oh noooz an error...");}return null;}private boolean isOpenNetwork() {ConnectivityManager connManager = (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);if(connManager.getActiveNetworkInfo() != null) {return connManager.getActiveNetworkInfo().isAvailable();}return false;}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent" ><ImageViewandroid:id="@+id/Iv"android:layout_width="fill_parent"android:layout_height="fill_parent"android:src="@drawable/ic_launcher" /></LinearLayout>
//模拟收到短信的状态栏提示 public class MainActivity extends Activity {private Button Btn;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);Btn = (Button) findViewById(R.id.Btn);Btn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {sendNotificaction();}});}private void sendNotificaction() {NotificationManager manager = (NotificationManager) this.getSystemService(Context.NOTIFICATION_SERVICE);Notification notification = new Notification();notification.icon = R.drawable.ic_launcher;notification.tickerText = "您有一条新的短消息！";notification.defaults = Notification.DEFAULT_SOUND;notification.audioStreamType = android.media.AudioManager.ADJUST_LOWER;Intent intent = new Intent(this, MainActivity.class);PendingIntent pendingIntent = PendingIntent.getActivity(this, 0,intent, PendingIntent.FLAG_ONE_SHOT);notification.setLatestEventInfo(this, "短消息内容", "我是一个短消息，愚人节快乐！",pendingIntent);manager.notify(1, notification);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent" ><Buttonandroid:id="@+id/Btn"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="点击发送Notification信息！" /></LinearLayout>
//模拟数据下载的状态栏提示 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/BtnSend"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="发送下载Notification" /><Buttonandroid:id="@+id/BtnClean"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="清除Notification" /></LinearLayout><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="wrap_content"android:layout_height="wrap_content"android:orientation="vertical" ><TextViewandroid:id="@+id/Tv"android:layout_width="wrap_content"android:layout_height="fill_parent"android:text="下载中"android:textColor="@android:color/white"android:textSize="20sp" /><ProgressBarandroid:id="@+id/Pb"style="?android:attr/progressBarStyleHorizontal"android:layout_width="260dip"android:layout_height="wrap_content"android:layout_gravity="center_vertical" /></LinearLayout>public class MainActivity extends Activity {private int notification_id = 1;private NotificationManager nm;private Handler handler = new Handler();private Notification notification;private int count = 0;private Boolean isclean = false;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);Button BtnSend = (Button) findViewById(R.id.BtnSend);BtnSend.setOnClickListener(mylis);Button BtnClean = (Button) findViewById(R.id.BtnClean);BtnClean.setOnClickListener(mylis);nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);notification = new Notification(R.drawable.ic_launcher, "开始下载",System.currentTimeMillis());notification.contentView = new RemoteViews(getPackageName(),R.layout.layout_notification);notification.contentView.setProgressBar(R.id.Pb, 100, 0, false);Intent notificationIntent = new Intent(this, MainActivity.class);PendingIntent contentIntent = PendingIntent.getActivity(this, 0,notificationIntent, 0);notification.contentIntent = contentIntent;}OnClickListener mylis = new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.BtnClean:nm.cancel(notification_id);isclean = true;break;case R.id.BtnSend:showNotification();handler.post(run);break;default:break;}}};Runnable run = new Runnable() {@Overridepublic void run() {if (!isclean) {count++;notification.contentView.setProgressBar(R.id.Pb, 100, count,false);showNotification();if (count < 100)handler.postDelayed(run, 200);}}};public void showNotification() {nm.notify(notification_id, notification);}}让你的程序和用户说话
Android中基于回调函数的事件处理
//Activity的声明周期回调 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextViewandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:text="Activity生命周期演示，请查看logcat" /></LinearLayout>public class MainActivity extends Activity {public static final String TAG = "Activity Life Cycle";@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);Log.e(TAG, "onCreate");}@Overrideprotected void onDestroy() {super.onDestroy();Log.e(TAG, "onDestroy");}@Overrideprotected void onPause() {super.onPause();Log.e(TAG, "onPause");}@Overrideprotected void onRestart() {super.onRestart();Log.e(TAG, "onRestart");}@Overrideprotected void onResume() {super.onResume();Log.e(TAG, "onResume");}@Overrideprotected void onStart() {super.onStart();Log.e(TAG, "onStart");}@Overrideprotected void onStop() {super.onStop();Log.e(TAG, "onStop");}}
//用户名长度检测效果 public class MainActivity extends Activity {private TextView Tv;private EditText Et;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();}private void findView() {Tv = (TextView)findViewById(R.id.Tv);Et = (EditText)findViewById(R.id.Et);}public void myclick(View v){int len = Et.getText().toString().length();if (len > 5 && len < 9) {Tv.setText("用户名合法");}else{Tv.setText("用户名长度非法");}}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><EditTextandroid:id="@+id/Et"android:layout_width="fill_parent"android:layout_height="wrap_content"android:hint="请输入用户名："/><Buttonandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:onClick="myclick"android:text="点击我，检测用户名合法性！"/><TextViewandroid:id="@+id/Tv"android:layout_width="fill_parent"android:layout_height="fill_parent"/></LinearLayout>
//打字游戏实现 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextViewandroid:id="@+id/Tv"android:layout_width="fill_parent"android:layout_height="fill_parent"android:text="i have a dream that one day this nation will rise up and live out the true meaning of its creed , we hold these truths to be self-evident, that all men are created equal."/></LinearLayout>public class MainActivity extends Activity {private TextView Tv;private int count = 1;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();}@Overridepublic boolean onKeyDown(int keyCode, KeyEvent event) {char ch = Character.toLowerCase(event.getDisplayLabel());if (ch == Tv.getText().charAt(count-1) && event.getAction() == KeyEvent.ACTION_DOWN) {SpannableString ss = new SpannableString(Tv.getText().toString());ss.setSpan(new ForegroundColorSpan(Color.RED), 0, count,Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);ss.setSpan(new StyleSpan(Typeface.BOLD_ITALIC), 0, count,Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);count++;Tv.setText(ss);}return super.onKeyDown(keyCode, event);}private void findView() {Tv = (TextView)findViewById(R.id.Tv);}}
//长按播放TextView动画 <set xmlns:android="http://schemas.android.com/apk/res/android" ><scaleandroid:duration="3000"android:fromXScale="0.0"android:fromYScale="0.0"android:interpolator="@android:anim/decelerate_interpolator"android:repeatCount="1"android:startOffset="0"android:toXScale="1.5"android:toYScale="1.5" /></set><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextViewandroid:id="@+id/Tv"android:layout_width="fill_parent"android:layout_height="fill_parent"android:text="长按S键播放Tv的动画"/></LinearLayout>public class MainActivity extends Activity {private TextView Tv;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();}@Overridepublic boolean onKeyDown(int keyCode, KeyEvent event) {event.startTracking();return true;}@Overridepublic boolean onKeyLongPress(int keyCode, KeyEvent event) {char ch = Character.toLowerCase(event.getDisplayLabel());if ('s'== ch) {Animation scale=AnimationUtils.loadAnimation(MainActivity.this, R.anim.anim);Tv.startAnimation(scale);}return super.onKeyLongPress(keyCode, event);}private void findView() {Tv = (TextView)findViewById(R.id.Tv);}}
//按钮的快捷键 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextViewandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:text="点击按钮或点击A键都可触发Button的点击事件"/><Button android:id="@+id/Btn"android:layout_width="fill_parent"android:layout_height="wrap_content"android:onClick="myclick"android:text="点击(A)"/></LinearLayout>public class MainActivity extends Activity {private Button Btn;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();}@Overridepublic boolean onKeyDown(int keyCode, KeyEvent event) {char ch = Character.toLowerCase(event.getDisplayLabel());if ('a'== ch) {myclick(Btn);}return super.onKeyDown(keyCode, event);}public void myclick(View v){Toast.makeText(MainActivity.this, "按钮被点击了...", Toast.LENGTH_SHORT).show();}private void findView() {Btn = (Button)findViewById(R.id.Btn);}}
//屏幕单击测试器 public class MainActivity extends Activity {private TextView Tv;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();}@Overridepublic boolean onTouchEvent(MotionEvent event) {if (MotionEvent.ACTION_DOWN == event.getAction()) {float x = event.getX();float y = event.getY();Tv.setText("您点击的位置是：\nx:"+x+"\n y:"+y);}return super.onTouchEvent(event);}private void findView() {Tv = (TextView)findViewById(R.id.Tv);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextViewandroid:id="@+id/Tv"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="点击屏幕得到相对屏幕的位置"/></LinearLayout>
//Activity内容加载完毕提示 public class MainActivity extends Activity {@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);}@Overridepublic void onWindowFocusChanged(boolean hasFocus) {super.onWindowFocusChanged(hasFocus);if(hasFocus) {Toast t = Toast.makeText(MainActivity.this, "页面加载完毕",Toast.LENGTH_SHORT);t.setGravity(Gravity.CENTER, 0, 0);t.show();}}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextViewandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:text="页面加载完毕后显示Toast提示框"/></LinearLayout>
//横竖界面自动切换 public class MainActivity extends Activity {@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);}@Overridepublic void onConfigurationChanged(Configuration newConfig) {super.onConfigurationChanged(newConfig);if(newConfig.orientation==Configuration.ORIENTATION_PORTRAIT){Toast.makeText(MainActivity.this, "现在是竖屏", Toast.LENGTH_SHORT).show();setContentView(R.layout.activity_main);}else if(newConfig.orientation==Configuration.ORIENTATION_LANDSCAPE){Toast.makeText(MainActivity.this, "现在是横屏", Toast.LENGTH_SHORT).show();setContentView(R.layout.activity_main_horizontal);}}}//activity_main_horizontal<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextViewandroid:id="@+id/Tv"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="我是横向布局"/></LinearLayout>//activity_main<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextViewandroid:id="@+id/Tv"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="我是纵向布局"/></LinearLayout>
//动态添加联系人列表 public class MainActivity extends Activity {private Button Btn;private LinearLayout Ll;private int count = 0;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {Btn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {addEditText();}});}@Overridepublic void onContentChanged() {super.onContentChanged();Toast.makeText(MainActivity.this, "已经添加了"+count+"个联系人！", Toast.LENGTH_SHORT).show();count++;}private void addEditText(){EditText e = new EditText(MainActivity.this);e.setHint("请输入第"+count+"个联系人的信息！");Ll.addView(e);setContentView(Ll);}private void findView() {Btn = (Button)findViewById(R.id.Btn);Ll = (LinearLayout)findViewById(R.id.Ll);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:id="@+id/Ll"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/Btn"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="点击动态添加联系人"/></LinearLayout>
Android中基于监听器的事件处理
//宝宝看图识字软件 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextViewandroid:id="@+id/Tv"android:layout_width="fill_parent"android:layout_height="wrap_content"android:textSize="20dip"android:text="请选出如下图形："/><LinearLayout android:layout_width="fill_parent"android:layout_height="wrap_content"android:orientation="horizontal"><TextViewandroid:id="@+id/TvRed"android:layout_width="fill_parent"android:layout_height="100dip"android:background="@color/red"android:layout_weight="1"/><TextViewandroid:id="@+id/TvGreen"android:layout_width="fill_parent"android:layout_height="100dip"android:background="@color/green"android:layout_weight="1"/><TextViewandroid:id="@+id/TvBlue"android:layout_width="fill_parent"android:layout_height="100dip"android:background="@color/blue"android:layout_weight="1"/></LinearLayout><LinearLayout android:layout_width="fill_parent"android:layout_height="wrap_content"android:orientation="horizontal"><TextViewandroid:id="@+id/TvRat"android:layout_width="fill_parent"android:layout_height="100dip"android:background="@drawable/rat"android:layout_weight="1"/><TextViewandroid:id="@+id/TvElephant"android:layout_width="fill_parent"android:layout_height="100dip"android:background="@drawable/elephant"android:layout_weight="1"/><TextViewandroid:id="@+id/TvTiger"android:layout_width="fill_parent"android:layout_height="100dip"android:background="@drawable/tiger"android:layout_weight="1"/></LinearLayout></LinearLayout>public class MainActivity extends Activity {private TextView Tv;private TextView TvRed;private TextView TvBlue;private TextView TvGreen;private TextView TvTiger;private TextView TvRat;private TextView TvElephant;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {TvBlue.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {Tv.setText("您选择了蓝色!");}});TvRed.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {Tv.setText("您选择了红色!");}});TvGreen.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {Tv.setText("您选择了绿色!");}});TvTiger.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {Tv.setText("您选择了老虎!");}});TvElephant.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {Tv.setText("您选择了大象!");}});TvRat.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {//设置对应的文字Tv.setText("您选择了老鼠!");}});}private void findView() {Tv = (TextView)findViewById(R.id.Tv);TvBlue = (TextView)findViewById(R.id.TvBlue);TvRed = (TextView)findViewById(R.id.TvRed);TvGreen = (TextView)findViewById(R.id.TvGreen);TvElephant = (TextView)findViewById(R.id.TvElephant);TvTiger = (TextView)findViewById(R.id.TvTiger);TvRat = (TextView)findViewById(R.id.TvRat);}}
//控件的拖动效果 <LinearLayout xmlns:android = "http://schemas.android.com/apk/res/android"android:orientation = "vertical"android:layout_width = "fill_parent"android:layout_height = "fill_parent"><com.wyl.example.AreaOneandroid:id = "@+id/ViewOne"android:layout_width = "50dip"android:layout_height = "50dip"android:background = "#FFFF00"/><TextViewandroid:layout_width = "50dip"android:layout_height = "50dip"/><com.wyl.example.AreaTwoandroid:id = "@+id/ViewTwo"android:layout_width = "50dip"android:layout_height = "50dip"android:background = "#00FF00"/></LinearLayout>public class AreaOne extends View {public AreaOne(Context context) {super(context);}public AreaOne(Context context, AttributeSet attrs) {super(context, attrs);}}public class AreaTwo extends View {public AreaTwo(Context context) {super(context);}public AreaTwo(Context context, AttributeSet attrs) {super(context, attrs);}}public class MainActivity extends Activity {public View ViewOne;public View ViewTwo;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {ViewOne.setOnLongClickListener(new OnLongClickListener() {public boolean onLongClick(View view) {ViewOne.startDrag(null, new DragShadowBuilder(view),(Object) view, 0);return true;}});ViewTwo.setOnDragListener(new OnDragListener() {public boolean onDrag(View mDropView, DragEvent event) {boolean result = false;switch (event.getAction()) {case DragEvent.ACTION_DRAG_STARTED: {Log.e("OnDragListener", "View开始被拖动!");result = true;break;}case DragEvent.ACTION_DRAG_ENTERED: {Log.e("OnDragListener", "被拖动的View进入当前View!");break;}case DragEvent.ACTION_DRAG_LOCATION: {Log.e("OnDragListener", "被拖动的View进入当前View后，位置发生改变!");break;}case DragEvent.ACTION_DROP: {Log.e("OnDragListener", "拖动的View被放入当前View!");View mDragView = (View) event.getLocalState();Drawable mDragViewBackgroud = mDragView.getBackground();mDragView.setBackgroundDrawable(mDropView.getBackground());mDropView.setBackgroundDrawable(mDragViewBackgroud);break;}case DragEvent.ACTION_DRAG_ENDED: {Log.e("OnDragListener", "拖动结束!");break;}case DragEvent.ACTION_DRAG_EXITED: {Log.e("OnDragListener", "拖动退出!");break;}default: {break;}}return result;}});}private void findView() {ViewOne = findViewById(R.id.ViewOne);ViewTwo = findViewById(R.id.ViewTwo);}}
//Email格式的检测 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="horizontal" ><TextViewandroid:id="@+id/showInfo"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="请输入Email：" /><EditText android:id="@+id/inputInfo"android:layout_width="200dip"android:layout_height="wrap_content"android:selectAllOnFocus="true"/><ImageView android:id="@+id/showImg"android:layout_width="wrap_content"android:layout_height="wrap_content"/></LinearLayout>public class MainActivity extends Activity {private EditText Tvinput = null;private ImageView Iv = null;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {Tvinput.setOnKeyListener(new View.OnKeyListener() {@Overridepublic boolean onKey(View v, int keyCode, KeyEvent event) {switch (event.getAction()) {// 得到操作类型case KeyEvent.ACTION_DOWN://键盘按下String inputString = Tvinput.getText().toString();//获得输入框的内容if (inputString.matches("\\w+@\\w+\\.\\w+")) {//验证通过Iv.setImageResource(R.drawable.right);//设置为正确的图片}else {Iv.setImageResource(R.drawable.wrong);//设置为错误的图片}break;case KeyEvent.ACTION_UP://键盘弹起break;}return false;}});}private void findView() {Tvinput = (EditText) findViewById(R.id.inputInfo);Iv = (ImageView) findViewById(R.id.showImg);}}
//隐藏导航栏 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="horizontal" ><TextViewandroid:id="@+id/Tv"android:layout_width="fill_parent"android:layout_height="fill_parent"android:text="点击屏幕，隐藏或显示导航栏！" /></LinearLayout>public class MainActivity extends Activity {private TextView Tv;private View rootView;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {Tv.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View paramView) {int i = rootView.getSystemUiVisibility(); Log.e("setOnClickListener", i+"");if (i == View.SYSTEM_UI_FLAG_VISIBLE) { rootView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_HIDE_NAVIGATION); } }});rootView.setOnSystemUiVisibilityChangeListener(new OnSystemUiVisibilityChangeListener() {@Overridepublic void onSystemUiVisibilityChange(int visibility) {Log.e("onSystemUiVisibilityChange", visibility+"");if (visibility == View.VISIBLE) {Toast.makeText(MainActivity.this,"显示虚拟导航按钮！", Toast.LENGTH_SHORT).show();}else{Toast.makeText(MainActivity.this,"隐藏虚拟导航按钮！",Toast.LENGTH_SHORT).show();}}});}private void findView() {rootView=getWindow().getDecorView();rootView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_HIDE_NAVIGATION);Tv = (TextView)findViewById(R.id.Tv);}}
//屏幕多点触摸测试器 public class MyView extends SurfaceView implements SurfaceHolder.Callback { private static final int MAX_TOUCHPOINTS = 10; private static final String START_TEXT = "请单点或多点触摸屏幕进行测试"; private Paint textPaint = new Paint(); private Paint touchPaints[] = new Paint[MAX_TOUCHPOINTS]; private int colors[] = new int[MAX_TOUCHPOINTS]; private int width, height; private float scale = 1.0f; public MyView(Context context) { super(context); SurfaceHolder holder = getHolder(); holder.addCallback(this);setFocusable(true); setFocusableInTouchMode(true); init(); } private void init() { textPaint.setColor(Color.WHITE); colors[0] = Color.BLUE; colors[1] = Color.RED; colors[2] = Color.GREEN; colors[3] = Color.YELLOW; colors[4] = Color.CYAN; colors[5] = Color.MAGENTA; colors[6] = Color.DKGRAY; colors[7] = Color.WHITE; colors[8] = Color.LTGRAY; colors[9] = Color.GRAY; for (int i = 0; i < MAX_TOUCHPOINTS; i++) { touchPaints[i] = new Paint(); touchPaints[i].setColor(colors[i]); } } @Override public boolean onTouchEvent(MotionEvent event) { int pointerCount = event.getPointerCount(); if (pointerCount > MAX_TOUCHPOINTS) { pointerCount = MAX_TOUCHPOINTS; } Canvas c = getHolder().lockCanvas(); if (c != null) { c.drawColor(Color.BLACK); if (event.getAction() == MotionEvent.ACTION_UP) { } else { for (int i = 0; i < pointerCount; i++) { int id = event.getPointerId(i); int x = (int) event.getX(i); int y = (int) event.getY(i); drawCrosshairsAndText(x, y, touchPaints[id], i, id, c); } for (int i = 0; i < pointerCount; i++) { int id = event.getPointerId(i); int x = (int) event.getX(i); int y = (int) event.getY(i); drawCircle(x, y, touchPaints[id], c); } } getHolder().unlockCanvasAndPost(c); } return true; } private void drawCrosshairsAndText(int x, int y, Paint paint, int ptr, int id, Canvas c) {c.drawLine(0, y, width, y, paint); c.drawLine(x, 0, x, height, paint); int textY = (int) ((15 + 20 * ptr) * scale); c.drawText("x" + ptr + "=" + x,10 * scale, textY, textPaint); c.drawText("y" + ptr + "=" + y,70 * scale, textY, textPaint); c.drawText("id" + ptr + "=" + id,width - 55 * scale, textY, textPaint); } private void drawCircle(int x, int y, Paint paint, Canvas c) { c.drawCircle(x, y, 20 * scale, paint); } public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { this.width = width; this.height = height; if (width > height) { this.scale = width / 480f; } else { this.scale = height / 480f; } textPaint.setTextSize(14 * scale); Canvas c = getHolder().lockCanvas(); if (c != null) { c.drawColor(Color.BLACK); float tWidth = textPaint.measureText(START_TEXT); c.drawText(START_TEXT, width / 2 - tWidth / 2, height / 2, textPaint); getHolder().unlockCanvasAndPost(c); } } public void surfaceCreated(SurfaceHolder holder) { } public void surfaceDestroyed(SurfaceHolder holder) { }} public class MainActivity extends Activity {@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);requestWindowFeature(Window.FEATURE_NO_TITLE);getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);setContentView(new MyView(this));}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="horizontal" ><TextViewandroid:id="@+id/Tv"android:layout_width="fill_parent"android:layout_height="fill_parent"android:text="点击屏幕，隐藏或显示导航栏！" /></LinearLayout>
//图片的平移、缩放和旋转 public class MyView extends ImageView {private float x_down = 0;private float y_down = 0;private PointF start = new PointF();private PointF mid = new PointF();private float oldDist = 1f;private float oldRotation = 0;private Matrix matrix = new Matrix();private Matrix matrix1 = new Matrix();private Matrix savedMatrix = new Matrix();private static final int NONE = 0;private static final int DRAG = 1;private static final int ZOOM = 2;private int mode = NONE;private boolean matrixCheck = false;private int widthScreen;private int heightScreen;private Bitmap kenan;public MyView(Activity activity) {super(activity);kenan = BitmapFactory.decodeResource(getResources(), R.drawable.kenan);DisplayMetrics dm = new DisplayMetrics();activity.getWindowManager().getDefaultDisplay().getMetrics(dm);widthScreen = dm.widthPixels;heightScreen = dm.heightPixels;matrix = new Matrix();}protected void onDraw(Canvas canvas) {canvas.save();canvas.drawBitmap(kenan, matrix, null);canvas.restore();}public boolean onTouchEvent(MotionEvent event) {switch (event.getAction() & MotionEvent.ACTION_MASK) {case MotionEvent.ACTION_DOWN:mode = DRAG;x_down = event.getX();y_down = event.getY();savedMatrix.set(matrix);break;case MotionEvent.ACTION_POINTER_DOWN:mode = ZOOM;oldDist = spacing(event);oldRotation = rotation(event);savedMatrix.set(matrix);midPoint(mid, event);break;case MotionEvent.ACTION_MOVE:if (mode == ZOOM) {matrix1.set(savedMatrix);float rotation = rotation(event) - oldRotation;float newDist = spacing(event);float scale = newDist / oldDist;matrix1.postScale(scale, scale, mid.x, mid.y);matrix1.postRotate(rotation, mid.x, mid.y);matrixCheck = matrixCheck();if (matrixCheck == false) {matrix.set(matrix1);invalidate();}} else if (mode == DRAG) {matrix1.set(savedMatrix);matrix1.postTranslate(event.getX() - x_down, event.getY() - y_down);matrixCheck = matrixCheck();matrixCheck = matrixCheck();if (matrixCheck == false) {matrix.set(matrix1);invalidate();}}break;case MotionEvent.ACTION_UP:case MotionEvent.ACTION_POINTER_UP:mode = NONE;break;}return true;}private boolean matrixCheck() {float[] f = new float[9];matrix1.getValues(f);float x1 = f[0] * 0 + f[1] * 0 + f[2];float y1 = f[3] * 0 + f[4] * 0 + f[5];float x2 = f[0] * kenan.getWidth()+ f[1] * 0 + f[2];float y2 = f[3] * kenan.getWidth()+ f[4] * 0 + f[5];float x3 = f[0] * 0 + f[1] * kenan.getHeight() + f[2];float y3 = f[3] * 0 + f[4] * kenan.getHeight() + f[5];float x4 = f[0] * kenan.getWidth() +f[1] * kenan.getHeight() + f[2];float y4 = f[3] * kenan.getWidth() + f[4] * kenan.getHeight() + f[5];double width = Math.sqrt((x1 - x2) *(x1 - x2) + (y1 - y2) * (y1 - y2));if (width < widthScreen / 3 || width > widthScreen * 3) {return true;}if ((x1 < widthScreen / 3 && x2 < widthScreen / 3&& x3 < widthScreen / 3 && x4 < widthScreen / 3)|| (x1 > widthScreen * 2 / 3 && x2 > widthScreen * 2 / 3&& x3 > widthScreen * 2 / 3 && x4 > widthScreen * 2 / 3)|| (y1 < heightScreen / 3 && y2 < heightScreen / 3&& y3 < heightScreen / 3 && y4 < heightScreen / 3)|| (y1 > heightScreen * 2 / 3 && y2 > heightScreen * 2 / 3&& y3 > heightScreen * 2 / 3 && y4 > heightScreen * 2 / 3)) {return true;}return false;}private float spacing(MotionEvent event) {float x = event.getX(0) - event.getX(1);float y = event.getY(0) - event.getY(1);return FloatMath.sqrt(x * x + y * y);}private void midPoint(PointF point, MotionEvent event) {float x = event.getX(0) + event.getX(1);float y = event.getY(0) + event.getY(1);point.set(x / 2, y / 2);}private float rotation(MotionEvent event) {double delta_x = (event.getX(0) - event.getX(1));double delta_y = (event.getY(0) - event.getY(1));double radians = Math.atan2(delta_y, delta_x);return (float) Math.toDegrees(radians);}}public class MainActivity extends Activity {@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);MyView myview = new MyView(this);setContentView(myview);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="horizontal" ><TextViewandroid:id="@+id/Tv"android:layout_width="fill_parent"android:layout_height="fill_parent"android:text="点击屏幕，隐藏或显示导航栏！" /></LinearLayout>
//图片浏览器滑动切换图片 public class MainActivity extends Activity {private ImageView Iv;private GestureDetector gestureDetector;private int[] ResId = new int[]{R.drawable.k1,R.drawable.k2,R.drawable.k3};private int count = 0;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {gestureDetector = new GestureDetector(MainActivity.this,onGestureListener);}@Overridepublic boolean onTouchEvent(MotionEvent event) {return gestureDetector.onTouchEvent(event);}private void findView() {Iv = (ImageView) findViewById(R.id.Iv);}private GestureDetector.OnGestureListener onGestureListener= new GestureDetector.SimpleOnGestureListener() {@Overridepublic boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,float velocityY) {float x = e2.getX() - e1.getX();float y = e2.getY() - e1.getY();if (x > 0) {count++;count %= 3;} else if (x < 0) {count--;count = (count + 3) % 3;}changeImg();return true;}};public void changeImg() {Iv.setImageResource(ResId[count]);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="horizontal" ><ImageViewandroid:id="@+id/Iv"android:layout_width="fill_parent"android:layout_height="fill_parent"android:src="@drawable/k1" /></LinearLayout>
//简易画板 public class MyView extends View {private int mLastX, mLastY; private int mCurrX, mCurrY; private Bitmap mBitmap; private Paint mPaint;public MyView(Context context) {super(context);mPaint = new Paint();mPaint.setStrokeWidth(6);}@Overrideprotected void onDraw(Canvas canvas) {super.onDraw(canvas);int width = getWidth();int height = getHeight();if (mBitmap == null) {mBitmap = Bitmap.createBitmap(width, height,Bitmap.Config.ARGB_8888);}Canvas tmpCanvas = new Canvas(mBitmap);tmpCanvas.drawLine(mLastX, mLastY, mCurrX, mCurrY, mPaint);canvas.drawBitmap(mBitmap, 0, 0, mPaint);}@Overridepublic boolean onTouchEvent(MotionEvent event) {mLastX = mCurrX;mLastY = mCurrY;mCurrX = (int) event.getX();mCurrY = (int) event.getY();switch (event.getAction()) {case MotionEvent.ACTION_DOWN:mLastX = mCurrX;mLastY = mCurrY;break;default:break;}invalidate();return true; }}public class MainActivity extends Activity {@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);MyView myview = new MyView(MainActivity.this);setContentView(myview);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="horizontal" ><ImageViewandroid:id="@+id/Iv"android:layout_width="fill_parent"android:layout_height="fill_parent"/></LinearLayout>
//登录和注册页面的ViewFlipper效果 public class MainActivity extends Activity implements OnGestureListener {private ViewFlipper flipper;private GestureDetector detector;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);detector = new GestureDetector(this);flipper = (ViewFlipper) this.findViewById(R.id.ViewFlipper01);}@Overridepublic boolean onTouchEvent(MotionEvent event) {return this.detector.onTouchEvent(event);}@Overridepublic boolean onDown(MotionEvent e) {return false;}@Overridepublic boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,float velocityY) {if (e1.getX() > e2.getX()) {this.flipper.showNext();} else if (e1.getX() < e2.getX()) {this.flipper.showPrevious();} else {return false;}return true;}@Overridepublic void onLongPress(MotionEvent e) {}@Overridepublic boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX,float distanceY) {return false;}@Overridepublic boolean onSingleTapUp(MotionEvent e) {return false;}@Overridepublic void onShowPress(MotionEvent e) {}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="horizontal" ><ViewFlipperandroid:id="@+id/ViewFlipper01"android:layout_width="wrap_content"android:layout_height="wrap_content" ><LinearLayoutandroid:id="@+id/LinearLayout01"android:layout_width="wrap_content"android:layout_height="wrap_content"android:orientation="vertical" ><TextViewandroid:layout_width="match_parent"android:layout_height="wrap_content"android:textSize="20dip"android:text="我是第一屏" /><EditText android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="请输入用户名："/><EditText android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="请输入密码："/><Button android:layout_width="match_parent"android:layout_height="wrap_content"android:text="登录"/></LinearLayout><LinearLayoutandroid:id="@+id/LinearLayout02"android:layout_width="wrap_content"android:layout_height="wrap_content"android:orientation="vertical" ><TextViewandroid:id="@+id/TextView02"android:layout_width="match_parent"android:layout_height="wrap_content"android:textSize="20dip"android:text="我是第二屏" /><EditText android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="请输入用户名："/><EditText android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="请输入密码："/><EditText android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="请输入邮箱："/><Button android:layout_width="match_parent"android:layout_height="wrap_content"android:text="注册"/></LinearLayout></ViewFlipper></LinearLayout>
//神庙逃亡的操作模拟效果 public class MainActivity extends Activity implements OnGestureListener {private GestureDetector detector;private ImageView Iv;private Animation amUp;private Animation amDown;private Animation amLeft;private Animation amRight;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);detector = new GestureDetector(this);Iv = (ImageView)findViewById(R.id.Iv); initAnimation();}private void initAnimation() {int screenWidth = getWindowManager().getDefaultDisplay().getWidth();int screenHeight = getWindowManager().getDefaultDisplay().getHeight();Log.e("screenWidth",screenWidth+ "");Log.e("screenHeight",screenHeight+ "");amUp = new TranslateAnimation(0, 0, 0, -screenHeight/2);amUp. setDuration (500 );amUp.setRepeatCount(1);amUp.setRepeatMode(Animation.REVERSE);amDown = new TranslateAnimation(0, 0, 0, screenHeight/2);amDown. setDuration (500);amDown.setRepeatCount(1);amDown.setRepeatMode(Animation.REVERSE);amLeft = new TranslateAnimation(0, -screenWidth/2, 0, 0);amLeft. setDuration (500 );amLeft.setRepeatCount(1);amLeft.setRepeatMode(Animation.REVERSE);amRight = new TranslateAnimation(0, screenWidth/2, 0, 0);amRight. setDuration (500 );amRight.setRepeatCount(1);amRight.setRepeatMode(Animation.REVERSE);}@Overridepublic boolean onTouchEvent(MotionEvent event) {return this.detector.onTouchEvent(event);}@Overridepublic boolean onDown(MotionEvent e) {return false;}@Overridepublic boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,float velocityY) {if (e1.getX() - e2.getX() > 100) {Iv.startAnimation(amLeft);Toast.makeText(MainActivity.this, "左", Toast.LENGTH_SHORT).show();return true;} else if (e1.getX() - e2.getX() < -100) {Iv.startAnimation(amRight);Toast.makeText(MainActivity.this, "右", Toast.LENGTH_SHORT).show();return true;} else if (e1.getY() - e2.getY() > 100) {Iv.startAnimation(amUp);Toast.makeText(MainActivity.this, "上", Toast.LENGTH_SHORT).show();return true;} else if (e1.getY() - e2.getY() < -100) {Iv.startAnimation(amDown);Toast.makeText(MainActivity.this, "下", Toast.LENGTH_SHORT).show();return true;}return true;}@Overridepublic void onLongPress(MotionEvent e) {}@Overridepublic boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX,float distanceY) {return false;}@Overridepublic boolean onSingleTapUp(MotionEvent e) {return false;}@Overridepublic void onShowPress(MotionEvent e) {}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"><ImageView android:id="@+id/Iv"android:layout_width="fill_parent"android:layout_height="fill_parent"android:src="@drawable/ic_launcher"android:scaleType="center"/></LinearLayout>
//手势库的创建及手势识别 //activity_creategesture<LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:background="@android:color/black"android:orientation="vertical"><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="horizontal"><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginRight="6dip"android:textColor="@android:color/background_light"android:text="@string/prompt_gesture_name"android:textAppearance="?android:attr/textAppearanceMedium" /><EditTextandroid:id="@+id/gesture_name"android:layout_width="0dip"android:layout_weight="1.0"android:textColor="@android:color/black"android:layout_height="wrap_content"android:maxLength="40"android:singleLine="true" /></LinearLayout><android.gesture.GestureOverlayViewandroid:id="@+id/gestures_overlay"android:layout_width="match_parent"android:layout_height="0dip"android:layout_weight="1.0"android:gestureStrokeType="multiple" /><LinearLayoutstyle="@android:style/ButtonBar"android:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="horizontal"><Buttonandroid:id="@+id/done"android:layout_width="0dip"android:layout_height="wrap_content"android:layout_weight="1"android:enabled="false"android:onClick="addGesture"android:text="@string/button_done" /><Buttonandroid:layout_width="0dip"android:layout_height="wrap_content"android:layout_weight="1"android:onClick="cancelGesture"android:text="@string/button_discard" /></LinearLayout></LinearLayout>//activity_gestureidentify<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:background="@android:color/black"android:orientation="vertical" ><TextViewandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:textColor="@android:color/background_light"android:text="请在下面绘制手势：" /><android.gesture.GestureOverlayViewandroid:id="@+id/gesture_overlay_view_test"android:layout_width="match_parent"android:layout_height="0dip"android:layout_weight="1.0"android:gestureStrokeType="multiple" /></LinearLayout>//activity_main<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:background="@android:color/black"android:orientation="vertical" ><ListViewandroid:id="@android:id/list"android:layout_width="match_parent"android:layout_height="0dip"android:layout_weight="1.0" /><TextViewandroid:id="@android:id/empty"android:layout_width="match_parent"android:layout_height="0dip"android:layout_weight="1.0"android:gravity="center"android:text="@string/gestures_loading"android:textAppearance="?android:attr/textAppearanceMedium" /><LinearLayoutstyle="@android:style/ButtonBar"android:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="horizontal" ><Buttonandroid:id="@+id/addButton"android:layout_width="0dip"android:layout_height="wrap_content"android:layout_weight="1"android:enabled="false"android:onClick="addGesture"android:text="@string/button_add" /><Buttonandroid:id="@+id/reloadButton"android:layout_width="0dip"android:layout_height="wrap_content"android:layout_weight="1"android:enabled="false"android:onClick="reloadGestures"android:text="@string/button_reload" /><Buttonandroid:id="@+id/recognitionButton"android:layout_width="0dip"android:layout_height="wrap_content"android:layout_weight="1"android:enabled="true"android:onClick="recognitionGestures"android:text="@string/button_ident" /></LinearLayout></LinearLayout>//dialog_rename<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="wrap_content"android:padding="20dip"android:orientation="vertical"><TextViewandroid:id="@+id/label"android:layout_height="wrap_content"android:layout_width="wrap_content"android:text="@string/gestures_rename_label"android:gravity="left"android:textAppearance="?android:attr/textAppearanceMedium" /><EditTextandroid:id="@+id/name"android:layout_height="wrap_content"android:layout_width="match_parent"android:scrollHorizontally="true"android:autoText="false"android:capitalize="none"android:gravity="fill_horizontal"android:textAppearance="?android:attr/textAppearanceMedium" /></LinearLayout>//gestures_item<TextView xmlns:android="http://schemas.android.com/apk/res/android"android:id="@android:id/text1"android:layout_width="match_parent"android:layout_height="wrap_content"android:gravity="center_vertical"android:minHeight="?android:attr/listPreferredItemHeight"android:textColor="@android:color/background_light"android:drawablePadding="12dip"android:paddingLeft="6dip"android:paddingRight="6dip"android:ellipsize="marquee"android:singleLine="true"android:textAppearance="?android:attr/textAppearanceLarge" />public class CreateGestureActivity extends Activity {private static final float LENGTH_THRESHOLD = 120.0f;private Gesture mGesture;private View mDoneButton;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_creategesture);mDoneButton = findViewById(R.id.done);GestureOverlayView overlay = (GestureOverlayView) findViewById(R.id.gestures_overlay);overlay.addOnGestureListener(new GesturesProcessor());}@Overrideprotected void onSaveInstanceState(Bundle outState) {super.onSaveInstanceState(outState);if (mGesture != null) {outState.putParcelable("gesture", mGesture);}}@Overrideprotected void onRestoreInstanceState(Bundle savedInstanceState) {super.onRestoreInstanceState(savedInstanceState);mGesture = savedInstanceState.getParcelable("gesture");if (mGesture != null) {final GestureOverlayView overlay =(GestureOverlayView) findViewById(R.id.gestures_overlay);overlay.post(new Runnable() {public void run() {overlay.setGesture(mGesture);}});mDoneButton.setEnabled(true);}}@SuppressWarnings({"UnusedDeclaration"})public void addGesture(View v) {if (mGesture != null) {final TextView input = (TextView) findViewById(R.id.gesture_name);final CharSequence name = input.getText();if (name.length() == 0) {input.setError(getString(R.string.error_missing_name));return;}final GestureLibrary store = MainActivity.getStore();store.addGesture(name.toString(), mGesture);store.save();setResult(RESULT_OK);final String path = new File(Environment.getExternalStorageDirectory(),"gestures").getAbsolutePath();Toast.makeText(this, getString(R.string.save_success, path), Toast.LENGTH_LONG).show();} else {setResult(RESULT_CANCELED);}finish();}@SuppressWarnings({"UnusedDeclaration"})public void cancelGesture(View v) {setResult(RESULT_CANCELED);finish();}private class GesturesProcessor implements GestureOverlayView.OnGestureListener {public void onGestureStarted(GestureOverlayView overlay,MotionEvent event) {mDoneButton.setEnabled(false);mGesture = null;}public void onGesture(GestureOverlayView overlay,MotionEvent event) {}public void onGestureEnded(GestureOverlayView overlay,MotionEvent event) {mGesture = overlay.getGesture();if (mGesture.getLength() < LENGTH_THRESHOLD) {overlay.clear(false);}mDoneButton.setEnabled(true);}public void onGestureCancelled(GestureOverlayView overlay,MotionEvent event) {}}}public class MainActivity extends ListActivity {private static final int STATUS_SUCCESS = 0;private static final int STATUS_CANCELLED = 1;private static final int STATUS_NO_STORAGE = 2;private static final int STATUS_NOT_LOADED = 3;private static final int MENU_ID_RENAME = 1;private static final int MENU_ID_REMOVE = 2;private static final int DIALOG_RENAME_GESTURE = 1;private static final int REQUEST_NEW_GESTURE = 1;private static final String GESTURES_INFO_ID = "gestures.info_id";private final File mStoreFile = new File(Environment.getExternalStorageDirectory(), "gestures");private final Comparator<NamedGesture> mSorter = new Comparator<NamedGesture>() {public int compare(NamedGesture object1, NamedGesture object2) {return object1.name.compareTo(object2.name);}};private static GestureLibrary sStore;private GesturesAdapter mAdapter;private GesturesLoadTask mTask;private TextView mEmpty;private Dialog mRenameDialog;private EditText mInput;private NamedGesture mCurrentRenameGesture;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);mAdapter = new GesturesAdapter(this);setListAdapter(mAdapter);if (sStore == null) {sStore = GestureLibraries.fromFile(mStoreFile);}mEmpty = (TextView) findViewById(android.R.id.empty);loadGestures();registerForContextMenu(getListView());}static GestureLibrary getStore() {return sStore;}@SuppressWarnings({ "UnusedDeclaration" })public void reloadGestures(View v) {loadGestures();}@SuppressWarnings({ "UnusedDeclaration" })public void addGesture(View v) {Intent intent = new Intent(this, CreateGestureActivity.class);startActivityForResult(intent, REQUEST_NEW_GESTURE);}public void recognitionGestures(View v) {Intent intent = new Intent(this, RecognitionGestureActivity.class);startActivity(intent);}@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {super.onActivityResult(requestCode, resultCode, data);if (resultCode == RESULT_OK) {switch (requestCode) {case REQUEST_NEW_GESTURE:loadGestures();break;}}}private void loadGestures() {if (mTask != null&& mTask.getStatus() != GesturesLoadTask.Status.FINISHED) {mTask.cancel(true);}mTask = (GesturesLoadTask) new GesturesLoadTask().execute();}@Overrideprotected void onDestroy() {super.onDestroy();if (mTask != null&& mTask.getStatus() != GesturesLoadTask.Status.FINISHED) {mTask.cancel(true);mTask = null;}cleanupRenameDialog();}private void checkForEmpty() {if (mAdapter.getCount() == 0) {mEmpty.setText(R.string.gestures_empty);}}@Overrideprotected void onSaveInstanceState(Bundle outState) {super.onSaveInstanceState(outState);if (mCurrentRenameGesture != null) {outState.putLong(GESTURES_INFO_ID,mCurrentRenameGesture.gesture.getID());}}@Overrideprotected void onRestoreInstanceState(Bundle state) {super.onRestoreInstanceState(state);long id = state.getLong(GESTURES_INFO_ID, -1);if (id != -1) {final Set<String> entries = sStore.getGestureEntries();out: for (String name : entries) {for (Gesture gesture : sStore.getGestures(name)) {if (gesture.getID() == id) {mCurrentRenameGesture = new NamedGesture();mCurrentRenameGesture.name = name;mCurrentRenameGesture.gesture = gesture;break out;}}}}}@Overridepublic void onCreateContextMenu(ContextMenu menu, View v,ContextMenu.ContextMenuInfo menuInfo) {super.onCreateContextMenu(menu, v, menuInfo);AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) menuInfo;menu.setHeaderTitle(((TextView) info.targetView).getText());menu.add(0, MENU_ID_RENAME, 0, R.string.gestures_rename);menu.add(0, MENU_ID_REMOVE, 0, R.string.gestures_delete);}@Overridepublic boolean onContextItemSelected(MenuItem item) {final AdapterView.AdapterContextMenuInfo menuInfo = (AdapterView.AdapterContextMenuInfo) item.getMenuInfo();final NamedGesture gesture = (NamedGesture) menuInfo.targetView.getTag();switch (item.getItemId()) {case MENU_ID_RENAME:renameGesture(gesture);return true;case MENU_ID_REMOVE:deleteGesture(gesture);return true;}return super.onContextItemSelected(item);}private void renameGesture(NamedGesture gesture) {mCurrentRenameGesture = gesture;showDialog(DIALOG_RENAME_GESTURE);}@Overrideprotected Dialog onCreateDialog(int id) {if (id == DIALOG_RENAME_GESTURE) {return createRenameDialog();}return super.onCreateDialog(id);}@Overrideprotected void onPrepareDialog(int id, Dialog dialog) {super.onPrepareDialog(id, dialog);if (id == DIALOG_RENAME_GESTURE) {mInput.setText(mCurrentRenameGesture.name);}}private Dialog createRenameDialog() {final View layout = View.inflate(this, R.layout.dialog_rename, null);mInput = (EditText) layout.findViewById(R.id.name);((TextView) layout.findViewById(R.id.label)).setText(R.string.gestures_rename_label);AlertDialog.Builder builder = new AlertDialog.Builder(this);builder.setIcon(0);builder.setTitle(getString(R.string.gestures_rename_title));builder.setCancelable(true);builder.setOnCancelListener(new Dialog.OnCancelListener() {public void onCancel(DialogInterface dialog) {cleanupRenameDialog();}});builder.setNegativeButton(getString(R.string.cancel_action),new Dialog.OnClickListener() {public void onClick(DialogInterface dialog, int which) {cleanupRenameDialog();}});builder.setPositiveButton(getString(R.string.rename_action),new Dialog.OnClickListener() {public void onClick(DialogInterface dialog, int which) {changeGestureName();}});builder.setView(layout);return builder.create();}private void changeGestureName() {final String name = mInput.getText().toString();if (!TextUtils.isEmpty(name)) {final NamedGesture renameGesture = mCurrentRenameGesture;final GesturesAdapter adapter = mAdapter;final int count = adapter.getCount();for (int i = 0; i < count; i++) {final NamedGesture gesture = adapter.getItem(i);if (gesture.gesture.getID() == renameGesture.gesture.getID()) {sStore.removeGesture(gesture.name, gesture.gesture);gesture.name = mInput.getText().toString();sStore.addGesture(gesture.name, gesture.gesture);break;}}adapter.notifyDataSetChanged();}mCurrentRenameGesture = null;}private void cleanupRenameDialog() {if (mRenameDialog != null) {mRenameDialog.dismiss();mRenameDialog = null;}mCurrentRenameGesture = null;}private void deleteGesture(NamedGesture gesture) {sStore.removeGesture(gesture.name, gesture.gesture);sStore.save();final GesturesAdapter adapter = mAdapter;adapter.setNotifyOnChange(false);adapter.remove(gesture);adapter.sort(mSorter);checkForEmpty();adapter.notifyDataSetChanged();Toast.makeText(this, R.string.gestures_delete_success,Toast.LENGTH_SHORT).show();}private class GesturesLoadTask extendsAsyncTask<Void, NamedGesture, Integer> {private int mThumbnailSize;private int mThumbnailInset;private int mPathColor;@Overrideprotected void onPreExecute() {super.onPreExecute();final Resources resources = getResources();mPathColor = resources.getColor(R.color.gesture_color);mThumbnailInset = (int) resources.getDimension(R.dimen.gesture_thumbnail_inset);mThumbnailSize = (int) resources.getDimension(R.dimen.gesture_thumbnail_size);findViewById(R.id.addButton).setEnabled(false);findViewById(R.id.reloadButton).setEnabled(false);mAdapter.setNotifyOnChange(false);mAdapter.clear();}@Overrideprotected Integer doInBackground(Void... params) {if (isCancelled())return STATUS_CANCELLED;if (!Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())) {return STATUS_NO_STORAGE;}final GestureLibrary store = sStore;if (store.load()) {for (String name : store.getGestureEntries()) {if (isCancelled())break;for (Gesture gesture : store.getGestures(name)) {final Bitmap bitmap = gesture.toBitmap(mThumbnailSize,mThumbnailSize, mThumbnailInset, mPathColor);final NamedGesture namedGesture = new NamedGesture();namedGesture.gesture = gesture;namedGesture.name = name;mAdapter.addBitmap(namedGesture.gesture.getID(), bitmap);publishProgress(namedGesture);}}return STATUS_SUCCESS;}return STATUS_NOT_LOADED;}@Overrideprotected void onProgressUpdate(NamedGesture... values) {super.onProgressUpdate(values);final GesturesAdapter adapter = mAdapter;adapter.setNotifyOnChange(false);for (NamedGesture gesture : values) {adapter.add(gesture);}adapter.sort(mSorter);adapter.notifyDataSetChanged();}@Overrideprotected void onPostExecute(Integer result) {super.onPostExecute(result);if (result == STATUS_NO_STORAGE) {getListView().setVisibility(View.GONE);mEmpty.setVisibility(View.VISIBLE);mEmpty.setText(getString(R.string.gestures_error_loading,mStoreFile.getAbsolutePath()));} else {findViewById(R.id.addButton).setEnabled(true);findViewById(R.id.reloadButton).setEnabled(true);checkForEmpty();}}}static class NamedGesture {String name;Gesture gesture;}private class GesturesAdapter extends ArrayAdapter<NamedGesture> {private final LayoutInflater mInflater;private final Map<Long, Drawable> mThumbnails = Collections.synchronizedMap(new HashMap<Long, Drawable>());public GesturesAdapter(Context context) {super(context, 0);mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);}void addBitmap(Long id, Bitmap bitmap) {mThumbnails.put(id, new BitmapDrawable(bitmap));}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {if (convertView == null) {convertView = mInflater.inflate(R.layout.gestures_item, parent,false);}final NamedGesture gesture = getItem(position);final TextView label = (TextView) convertView;label.setTag(gesture);label.setText(gesture.name);label.setCompoundDrawablesWithIntrinsicBounds(mThumbnails.get(gesture.gesture.getID()), null, null, null);return convertView;}}}public class RecognitionGestureActivity extends Activity {GestureLibrary mGestureLib;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_gestureidentify);GestureOverlayView gestures = (GestureOverlayView) findViewById(R.id.gesture_overlay_view_test);gestures.addOnGesturePerformedListener(new GestureOverlayView.OnGesturePerformedListener() {@Overridepublic void onGesturePerformed(GestureOverlayView overlay,Gesture gesture) {ArrayList<Prediction> predictions = mGestureLib.recognize(gesture);if (predictions.size() > 0) {Prediction prediction = (Prediction) predictions.get(0);if (prediction.score > 1.0) {Toast.makeText(RecognitionGestureActivity.this,prediction.name, Toast.LENGTH_SHORT).show();}}}});mGestureLib = MainActivity.getStore();}}
//滑动切换Activity的背景效果 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:id="@+id/Ll"android:layout_width="fill_parent"android:layout_height="fill_parent"android:background="@drawable/k1"android:orientation="vertical" ><EditTextandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:hint="请输入用户名：" /><EditTextandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:hint="请输入密码：" /><Button android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="登录"/></LinearLayout>public class MainActivity extends Activity {private LinearLayout Ll;private GestureDetector gestureDetector;private int[] ResId = new int[]{R.drawable.k1,R.drawable.k2,R.drawable.k3};private int count = 0;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {gestureDetector = new GestureDetector(MainActivity.this,onGestureListener);}@Overridepublic boolean onTouchEvent(MotionEvent event) {return gestureDetector.onTouchEvent(event);}private void findView() {Ll = (LinearLayout) findViewById(R.id.Ll);}private GestureDetector.OnGestureListener onGestureListener = new GestureDetector.SimpleOnGestureListener() {@Overridepublic boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,float velocityY) {float x = e2.getX() - e1.getX();float y = e2.getY() - e1.getY();if (x > 0) {count++;count %= 3;} else if (x < 0) {count--;count = (count + 3) % 3;}changeImg();return true;}};public void changeImg() {Ll.setBackgroundResource(ResId[count]);}}
//按钮控制小人儿移动 public class MainActivity extends Activity {private Button rightButton;private Button leftButton;private Button downButton;private Button upButton;private MyViewGroup myviewgroup;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);WindowManager wm = (WindowManager) this.getSystemService(Context.WINDOW_SERVICE);int width = wm.getDefaultDisplay().getWidth();int height = wm.getDefaultDisplay().getHeight();myviewgroup = (MyViewGroup) findViewById(R.id.mygroupview);TextView textView = new TextView(this);textView.setWidth(80);textView.setHeight(80);textView.setLayoutParams(new LayoutParams(80, 80));textView.setBackgroundResource(R.drawable.ic_launcher);myviewgroup.setGravity(Gravity.CENTER);myviewgroup.addView(textView);findView();setListener();}private void setListener() {rightButton.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {myviewgroup.scrollToRight();}});leftButton.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {myviewgroup.scrollToLeft();}});downButton.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {myviewgroup.scrollToDown();}});upButton.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {myviewgroup.scrollToUp();}});}private void findView() {rightButton = (Button) findViewById(R.id.BtnRight);leftButton = (Button) findViewById(R.id.BtnLeft);downButton = (Button) findViewById(R.id.BtnDown);upButton = (Button) findViewById(R.id.BtnUp);}}public class MyViewGroup extends LinearLayout {private Scroller mScroller;private int space = 10;public MyViewGroup(Context context) {super(context);initCustomLinearLayout(context);}public MyViewGroup(Context context, AttributeSet attrs) {super(context, attrs);initCustomLinearLayout(context);}public void scrollToRight() {mScroller.startScroll(mScroller.getCurrX(),mScroller.getCurrY(),-space,0, 250);invalidate();}public void scrollToUp() {mScroller.startScroll(mScroller.getCurrX(),mScroller.getCurrY(),0, space, 250);invalidate();}public void scrollToDown() {mScroller.startScroll(mScroller.getCurrX(),mScroller.getCurrY(),0, -space, 250);invalidate();}public void scrollToLeft() {mScroller.startScroll(mScroller.getCurrX(),mScroller.getCurrY(),space, 0,250);invalidate();}@Overridepublic void onLayout(boolean changed, int left, int top, int right, int bottom) {super.onLayout(changed, left, top, right, bottom);}@Overridepublic void computeScroll() {if (!mScroller.isFinished()) {if (mScroller.computeScrollOffset()) {scrollTo(mScroller.getCurrX(), mScroller.getCurrY());invalidate();}}}private void initCustomLinearLayout(Context context) {mScroller = new Scroller(context);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:id="@+id/layout"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" android:background="@color/skyblue"><com.wyl.example.MyViewGroupandroid:id="@+id/mygroupview"android:layout_width="fill_parent"android:layout_height="fill_parent"android:layout_weight="1" /><LinearLayoutandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:orientation="horizontal" android:layout_gravity="center_horizontal"><Buttonandroid:id="@+id/BtnLeft"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="@string/left_button" /><Buttonandroid:id="@+id/BtnRight"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="@string/right_button" /></LinearLayout><LinearLayoutandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:orientation="horizontal" android:layout_gravity="center_horizontal"><Buttonandroid:id="@+id/BtnUp"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="@string/up_button" /><Buttonandroid:id="@+id/BtnDown"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="@string/down_button" /></LinearLayout></LinearLayout>
//Android中多线程处理 //异步请求广告图片 <ScrollView xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent" ><LinearLayoutandroid:id="@+id/layout"android:layout_width="fill_parent"android:layout_height="fill_parent"android:layout_gravity="center_horizontal"android:background="@color/skyblue"android:orientation="vertical" ><ImageViewandroid:id="@+id/Iv1"android:layout_width="wrap_content"android:layout_height="wrap_content" /><ImageViewandroid:id="@+id/Iv2"android:layout_width="wrap_content"android:layout_height="wrap_content" /><ImageViewandroid:id="@+id/Iv3"android:layout_width="wrap_content"android:layout_height="wrap_content" /></LinearLayout></ScrollView>public class MainActivity extends Activity {@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);ImageHandle imgHandle1 =new ImageHandle(this); imgHandle1.loadImg("http://www.baidu.com/img/baidu_logo.gif", R.id.Iv1); ImageHandle imgHandle2 =new ImageHandle(this); imgHandle2.loadImg("http://www.baidu.com/img/baidu_logo.gif", R.id.Iv2); ImageHandle imgHandle3 =new ImageHandle(this); imgHandle3.loadImg("http://www.baidu.com/img/baidu_logo.gif", R.id.Iv3); }}public class ImageHandle extends Handler{Activity context;public ImageHandle(Activity context){this.context=context;}@Overridepublic void handleMessage(Message msg) {super.handleMessage(msg);ImageView img=(ImageView)context.findViewById(msg.arg1);img.setImageDrawable((Drawable)msg.obj);}public void loadImg(final String imgUrl,final int viewId){Thread thread=new Thread(){@Overridepublic void run() {try {Drawable drawable=Drawable.createFromStream(new URL(imgUrl).openStream(), "img.png");Message msg=ImageHandle.this.obtainMessage();msg.arg1=viewId;msg.obj=drawable;ImageHandle.this.sendMessage(msg);} catch (Exception e) {e.printStackTrace();}}};thread.start();thread=null;}}
//本地三国演义文本的异步加载 <ScrollView xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent" ><LinearLayoutandroid:id="@+id/layout"android:layout_width="fill_parent"android:layout_height="fill_parent"android:layout_gravity="center_horizontal"android:background="@color/skyblue"android:orientation="vertical" ><TextViewandroid:id="@+id/Tv"android:layout_width="fill_parent"android:layout_height="wrap_content" /></LinearLayout></ScrollView>public class FileRead {public boolean readfinish = false;public List<String> list = null;public class ReadFileThread extends Thread {public void run() {list = new ArrayList<String>(100);list.clear();readfinish = false;try {RandomAccessFile raf = new RandomAccessFile("/sdcard/sanguo.txt","r");while (raf.getFilePointer() < raf.length()) {list.add(new String(raf.readLine().getBytes("iso8859-1"),"utf-8"));}} catch (Exception e1) {e1.printStackTrace();}readfinish = true;}};}public class MainActivity extends Activity {FileRead fr = null;Handler mHandler = null;int curi = 0;Runnable updateui = null;String[] tmp = null;String s = "";TextView tv = null;class ReadListener extends Thread {public void run() {int i = 0, newi = 0;while (!fr.readfinish) {newi = fr.list.size();if ((newi - i) > 10){i = newi;tmp = (String[]) fr.list.toArray(new String[fr.list.size()]);mHandler.post(updateui);}}tmp = (String[]) fr.list.toArray(new String[fr.list.size()]);mHandler.post(updateui);}};@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);tv = (TextView) findViewById(R.id.Tv);fr = new FileRead();ReadFileThread readThread = fr.new ReadFileThread();updateui = new Runnable(){@Overridepublic void run() {int i = 0;for (i = curi; i < tmp.length; i++) {s += tmp[i] + "\n";}tv.setText(s);curi = i;}};readThread.start();ReadListener updateThread = new ReadListener();mHandler = new Handler();updateThread.start();}}
//应用程序的启动动画 public class MainActivity extends Activity {@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);new Handler().postDelayed(new Runnable(){ public void run() { Intent i = new Intent(MainActivity.this, NextActivity.class); MainActivity.this.startActivity(i); MainActivity.this.finish(); } }, 3000); }}public class NextActivity extends Activity {@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_next);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:id="@+id/layout"android:layout_width="fill_parent"android:layout_height="fill_parent"android:layout_gravity="center_horizontal"android:orientation="vertical" ><ImageViewandroid:layout_width="fill_parent"android:layout_height="fill_parent"android:scaleType="fitXY"android:src="@drawable/baidu" /></LinearLayout><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:id="@+id/layout"android:layout_width="fill_parent"android:layout_height="fill_parent"android:layout_gravity="center_horizontal"android:orientation="vertical" ><TextViewandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:text="I am NextActivity!" /></LinearLayout>
//NBA球星信息介绍的网格视图 public class AsyncImageLoader{private HashMap<String, SoftReference<Drawable>> imageCache;public AsyncImageLoader(){imageCache = new HashMap<String, SoftReference<Drawable>>();}public Drawable loadDrawable(final String imageUrl,final ImageCallback imageCallback){if (imageCache.containsKey(imageUrl)){SoftReference<Drawable> softReference = imageCache.get(imageUrl);Drawable drawable = softReference.get();if (drawable != null){return drawable;}}final Handler handler = new Handler(){public void handleMessage(Message message){imageCallback.imageLoaded((Drawable) message.obj, imageUrl);}};new Thread(){@Overridepublic void run(){Drawable drawable = loadImageFromUrl(imageUrl);imageCache.put(imageUrl, new SoftReference<Drawable>(drawable));Message message = handler.obtainMessage(0, drawable);handler.sendMessage(message);}}.start();return null;}public static Drawable loadImageFromUrl(String url){URL m;InputStream i = null;try{m = new URL(url);i = (InputStream) m.getContent();}catch (MalformedURLException e1){e1.printStackTrace();}catch (IOException e){e.printStackTrace();}Drawable d = Drawable.createFromStream(i, "src");return d;}public interface ImageCallback{public void imageLoaded(Drawable imageDrawable, String imageUrl);}}public class GirdItem {private String imageUrl;private String text;public GirdItem(String imageUrl, String text) {this.imageUrl = imageUrl;this.text = text;}public String getImageUrl() {return imageUrl;}public String getText() {return text;}}public class GridViewAdapter extends ArrayAdapter<GirdItem> {private GridView gridView;private AsyncImageLoader asyncImageLoader;public GridViewAdapter(Activity activity,List<GirdItem> imageAndTexts, GridView gridView) {super(activity, 0, imageAndTexts);this.gridView = gridView;asyncImageLoader = new AsyncImageLoader();}public View getView(int position, View convertView, ViewGroup parent) {Activity activity = (Activity) getContext();View rowView = convertView;ViewCache viewCache;if (rowView == null) {LayoutInflater inflater = activity.getLayoutInflater();rowView = inflater.inflate(R.layout.griditem, null);viewCache = new ViewCache(rowView);rowView.setTag(viewCache);} else {viewCache = (ViewCache) rowView.getTag();}GirdItem imageAndText = getItem(position);String imageUrl = imageAndText.getImageUrl();ImageView imageView = viewCache.getImageView();imageView.setTag(imageUrl);Drawable cachedImage = asyncImageLoader.loadDrawable(imageUrl,new com.wyl.example.AsyncImageLoader.ImageCallback() {public void imageLoaded(Drawable imageDrawable,String imageUrl) {ImageView imageViewByTag = (ImageView) gridView.findViewWithTag(imageUrl);if (imageViewByTag != null) {imageViewByTag.setImageDrawable(imageDrawable);}}});if (cachedImage == null) {imageView.setImageResource(R.drawable.ic_launcher);} else {imageView.setImageDrawable(cachedImage);}TextView textView = viewCache.getTextView();textView.setText(imageAndText.getText());return rowView;}}public class MainActivity extends Activity {@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);GridView gridView = (GridView) findViewById(R.id.Gv);List<GirdItem> list = new ArrayList<GirdItem>();list.add(new GirdItem("http://www.sinaimg.cn/ty/nba/players/2008/4244.jpg","杜兰特"));list.add(new GirdItem("http://www.sinaimg.cn/ty/nba/players/2008/4390.jpg","维斯布鲁克"));list.add(new GirdItem("http://www.sinaimg.cn/ty/nba/players/2008/3843.jpg","马丁"));list.add(new GirdItem("http://www.sinaimg.cn/ty/nba/players/2008/4486.jpg","依巴卡"));list.add(new GirdItem("http://www.sinaimg.cn/ty/nba/players/2008/4563.jpg","哈登"));list.add(new GirdItem("http://www.sinaimg.cn/ty/nba/players/2008/4795.jpg","JimLin"));list.add(new GirdItem("http://www.sinaimg.cn/ty/nba/players/2008/4920.jpg","帕森斯"));gridView.setAdapter(new GridViewAdapter(this, list, gridView));}}public class ViewCache{private View baseView;private TextView textView;private ImageView imageView;public ViewCache(View baseView){this.baseView = baseView;}public TextView getTextView(){if (textView == null){textView = (TextView) baseView.findViewById(R.id.ItemTv);}return textView;}public ImageView getImageView(){if (imageView == null){imageView = (ImageView) baseView.findViewById(R.id.ItemIv);}return imageView;}}<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="wrap_content" ><GridViewandroid:id="@+id/Gv"android:layout_width="fill_parent"android:layout_height="fill_parent"android:columnWidth="70dp"android:gravity="center"android:horizontalSpacing="10dp"android:numColumns="2"android:stretchMode="columnWidth"android:verticalSpacing="10dp" /></RelativeLayout><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="wrap_content"android:paddingBottom="4dip" ><ImageViewandroid:id="@+id/ItemIv"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_centerHorizontal="true" ></ImageView><TextViewandroid:id="@+id/ItemTv"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_below="@+id/ItemIv"android:layout_centerHorizontal="true" ></TextView></RelativeLayout>
//NBA球星信息介绍的列表视图 public class AsyncImageLoader{private HashMap<String, SoftReference<Drawable>> imageCache;public AsyncImageLoader(){imageCache = new HashMap<String, SoftReference<Drawable>>();}public Drawable loadDrawable(final String imageUrl,final ImageCallback imageCallback){if (imageCache.containsKey(imageUrl)){SoftReference<Drawable> softReference = imageCache.get(imageUrl);Drawable drawable = softReference.get();if (drawable != null){return drawable;}}final Handler handler = new Handler(){public void handleMessage(Message message){imageCallback.imageLoaded((Drawable) message.obj, imageUrl);}};new Thread(){@Overridepublic void run(){Drawable drawable = loadImageFromUrl(imageUrl);imageCache.put(imageUrl, new SoftReference<Drawable>(drawable));Message message = handler.obtainMessage(0, drawable);handler.sendMessage(message);}}.start();return null;}public static Drawable loadImageFromUrl(String url){URL m;InputStream i = null;try{m = new URL(url);i = (InputStream) m.getContent();}catch (MalformedURLException e1){e1.printStackTrace();}catch (IOException e){e.printStackTrace();}Drawable d = Drawable.createFromStream(i, "src");return d;}public interface ImageCallback{public void imageLoaded(Drawable imageDrawable, String imageUrl);}}public class ListItem {private String imageUrl;private String name;private String info;public ListItem(String imageUrl, String namestr,String infostr) {this.imageUrl = imageUrl;this.name = namestr;this.info = infostr;}public String getImageUrl() {return imageUrl;}public String getinfo() {return info;}public String getName() {return name;}}public class ListViewAdapter extends ArrayAdapter<ListItem> {private ListView listview;private AsyncImageLoader asyncImageLoader;public ListViewAdapter(Activity activity,List<ListItem> imageAndTexts, ListView listView) {super(activity, 0, imageAndTexts);this.listview = listView;asyncImageLoader = new AsyncImageLoader();}public View getView(int position, View convertView, ViewGroup parent) {Activity activity = (Activity) getContext();View rowView = convertView;ViewCache viewCache;if (rowView == null) {LayoutInflater inflater = activity.getLayoutInflater();rowView = inflater.inflate(R.layout.listviewitem, null);viewCache = new ViewCache(rowView);rowView.setTag(viewCache);} else {viewCache = (ViewCache) rowView.getTag();}ListItem imageAndText = getItem(position);String imageUrl = imageAndText.getImageUrl();ImageView imageView = viewCache.getImageView();imageView.setTag(imageUrl);Drawable cachedImage = asyncImageLoader.loadDrawable(imageUrl,new com.wyl.example.AsyncImageLoader.ImageCallback() {public void imageLoaded(Drawable imageDrawable,String imageUrl) {ImageView imageViewByTag = (ImageView) listview.findViewWithTag(imageUrl);if (imageViewByTag != null) {imageViewByTag.setImageDrawable(imageDrawable);}}});if (cachedImage == null) {imageView.setImageResource(R.drawable.ic_launcher);} else {imageView.setImageDrawable(cachedImage);}TextView textViewname = viewCache.getnameTextView();textViewname.setText(imageAndText.getName());TextView textViewinfo = viewCache.getinfoTextView();textViewinfo.setText(imageAndText.getinfo());return rowView;}}public class MainActivity extends Activity {@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);ListView listview = (ListView) findViewById(R.id.Lv);List<ListItem> list = new ArrayList<ListItem>();list.add(new ListItem("http://www.sinaimg.cn/ty/nba/players/2008/4244.jpg","杜兰特","凯文·杜兰特,小前锋，效力于俄克拉荷马雷霆队。2009-2010赛季荣膺NBA常规赛得分王，并成为NBA历史上最年轻的得分王。2009-2012赛季连续三届常规赛得分王，场均得分30.1分、27.7分、28.0分，成为最年轻的得分王与最年轻的连续两届、三届得分王。"));list.add(new ListItem("http://www.sinaimg.cn/ty/nba/players/2008/4390.jpg","维斯布鲁克","拉塞尔·威斯布鲁克（控球后卫，效力于NBA俄克拉荷马雷霆队。2010-2011赛季入选NBA最佳第二阵容，2011-2012赛季连续第二次入选西部全明星替补阵容，2011-2012赛季助雷霆获西部冠军，打入总决赛。"));list.add(new ListItem("http://www.sinaimg.cn/ty/nba/players/2008/3843.jpg","马丁","凯文·马丁（1983年2月1日—）出生于美国俄亥俄州曾斯维尔（Zanesville, OH），美国职业篮球运动员，司职得分后卫，效力于NBA俄克拉荷马雷霆队。"));list.add(new ListItem("http://www.sinaimg.cn/ty/nba/players/2008/4486.jpg","依巴卡","司职大前锋，拥有极强的身体素质，擅长冲抢前场篮板，有出色的封盖能力，有一定的中距离投篮能力。"));list.add(new ListItem("http://www.sinaimg.cn/ty/nba/players/2008/4563.jpg","哈登","詹姆斯·哈登（1989年8月26日—）出生于美国加利福尼亚州洛杉矶，美国职业篮球运动员，司职得分后卫，效力于NBA休斯顿火箭队。他是2009年NBA选秀探花，2012年入选梦十队获得奥运金牌，2013年入选NBA全明星。"));list.add(new ListItem("http://www.sinaimg.cn/ty/nba/players/2008/4795.jpg","JimLin","林书豪（控球后卫，效力于NBA休斯敦火箭队。首位进入NBA的美籍华裔球员。2011年12月，先后被勇士队、休斯顿火箭队裁掉。2011年12月27日，他签约纽约尼克斯队。2012年夏天，林书豪与休斯敦火箭签定了一份三年的合同。"));list.add(new ListItem("http://www.sinaimg.cn/ty/nba/players/2008/4920.jpg","帕森斯","钱德勒·帕森斯,小前锋/大前锋，现效力于NBA休斯敦火箭队。"));listview.setAdapter(new ListViewAdapter(this, list, listview));}}public class ViewCache{private View baseView;private TextView textViewname;private TextView textViewinfo;private ImageView imageView;public ViewCache(View baseView){this.baseView = baseView;}public TextView getnameTextView(){if (textViewname == null){textViewname = (TextView) baseView.findViewById(R.id.ItemTvName);}return textViewname;}public TextView getinfoTextView(){if (textViewinfo == null){textViewinfo = (TextView) baseView.findViewById(R.id.ItemTvInfo);}return textViewinfo;}public ImageView getImageView(){if (imageView == null){imageView = (ImageView) baseView.findViewById(R.id.ItemIv);}return imageView;}}<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="wrap_content" ><ListViewandroid:id="@+id/Lv"android:layout_width="fill_parent"android:layout_height="fill_parent"/></RelativeLayout><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="wrap_content"android:paddingBottom="4dip" ><ImageViewandroid:id="@+id/ItemIv"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentLeft="true" ></ImageView><TextViewandroid:id="@+id/ItemTvName"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentLeft="true"android:layout_below="@+id/ItemIv" ></TextView><TextViewandroid:id="@+id/ItemTvInfo"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_toRightOf="@+id/ItemIv" ></TextView></RelativeLayout>
//文件下载 public class MainActivity extends Activity {private ProgressBar pb; private TextView tv;private Button btn;private EditText et;private int fileSize;private int downLoadFileSize;private String filename;private Handler handler = new Handler() {@Overridepublic void handleMessage(Message msg) {if (!Thread.currentThread().isInterrupted()) {switch (msg.what) {case 0:pb.setMax(fileSize);case 1:pb.setProgress(downLoadFileSize);int result = downLoadFileSize * 100 / fileSize;tv.setText(result + "%");break;case 2:Toast.makeText(MainActivity.this, "文件下载完成，请在sdcard目录下查看下载文件",1).show();break;case -1:String error = msg.getData().getString("error");Toast.makeText(MainActivity.this, error, 1).show();break;}}super.handleMessage(msg);}};@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {btn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {new Thread() {public void run() {try {String str = et.getText().toString();down_file(str,"/sdcard/");} catch (ClientProtocolException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}}}.start();}});}private void findView() {pb = (ProgressBar) findViewById(R.id.Pb);tv = (TextView) findViewById(R.id.Tv);btn = (Button)findViewById(R.id.Btn);et = (EditText)findViewById(R.id.Et);}public void down_file(String url, String path) throws IOException {filename = url.substring(url.lastIndexOf("/") + 1);URL myURL = new URL(url);URLConnection conn = myURL.openConnection();conn.connect();InputStream is = conn.getInputStream();fileSize = conn.getContentLength();// 根据响应获取文件大小if (fileSize <= 0)throw new RuntimeException("无法获知文件大小 ");if (is == null)throw new RuntimeException("stream is null");FileOutputStream fos = new FileOutputStream(path + filename);byte buf[] = new byte[1024];downLoadFileSize = 0;sendMsg(0);do {int numread = is.read(buf);if (numread == -1) {break;}fos.write(buf, 0, numread);downLoadFileSize += numread;sendMsg(1);} while (true);sendMsg(2);try {is.close();} catch (Exception ex) {Log.e("tag", "error: " + ex.getMessage(), ex);}}private void sendMsg(int flag) {Message msg = new Message();msg.what = flag;handler.sendMessage(msg);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextViewandroid:id="@+id/Tv"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="请输入下载地址，然后点击下载按钮：" /><EditText android:id="@+id/Et"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="http://p1.s.hjfile.cn/thread/201207/20120718111554562_336_o.jpg"/><Button android:id="@+id/Btn"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="点击开始下载"/><ProgressBarandroid:id="@+id/Pb"style="?android:attr/progressBarStyleHorizontal"android:layout_width="fill_parent"android:layout_height="wrap_content"android:max="100" /></LinearLayout>
//中断文件下载 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextViewandroid:id="@+id/Tv"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="请输入下载地址，然后点击下载按钮：" /><EditText android:id="@+id/Et"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="http://p1.s.hjfile.cn/thread/201207/20120718111554562_336_o.jpg"/><Button android:id="@+id/BtnStart"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="点击开始下载"/><Button android:id="@+id/BtnStop"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="点击终止下载"/><ProgressBarandroid:id="@+id/Pb"style="?android:attr/progressBarStyleHorizontal"android:layout_width="fill_parent"android:layout_height="wrap_content"android:max="100" /></LinearLayout>public class MainActivity extends Activity {private ProgressBar pb; private TextView tv;private Button btnstart;private Button btnstop;private EditText et;private int fileSize;private int downLoadFileSize;private String filename;private Thread thread;private Handler handler = new Handler() {@Overridepublic void handleMessage(Message msg) {if (!Thread.currentThread().isInterrupted()) {switch (msg.what) {case 0:pb.setMax(fileSize);case 1:pb.setProgress(downLoadFileSize);int result = downLoadFileSize * 100 / fileSize;tv.setText(result + "%");break;case 2:Toast.makeText(MainActivity.this, "文件下载完成，请在sdcard目录下查看下载文件",1).show();break;case 3:Toast.makeText(MainActivity.this, "文件下载终止",1).show();pb.setProgress(0);tv.setText("0%");break;case -1:String error = msg.getData().getString("error");Toast.makeText(MainActivity.this, error, 1).show();break;}}super.handleMessage(msg);}};@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {btnstart.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {thread = new Thread() {public void run() {try {String str = et.getText().toString();down_file(str,"/sdcard/");} catch (ClientProtocolException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}}};thread.start();}});btnstop.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {thread.interrupt();}});}private void findView() {pb = (ProgressBar) findViewById(R.id.Pb);tv = (TextView) findViewById(R.id.Tv);btnstart = (Button)findViewById(R.id.BtnStart);btnstop = (Button)findViewById(R.id.BtnStop);et = (EditText)findViewById(R.id.Et);}public void down_file(String url, String path) throws IOException {filename = url.substring(url.lastIndexOf("/") + 1);URL myURL = new URL(url);URLConnection conn = myURL.openConnection();conn.connect();InputStream is = conn.getInputStream();fileSize = conn.getContentLength();if (fileSize <= 0)throw new RuntimeException("无法获知文件大小 ");if (is == null)throw new RuntimeException("stream is null");FileOutputStream fos = new FileOutputStream(path + filename);byte buf[] = new byte[1024];downLoadFileSize = 0;sendMsg(0);do {int numread = is.read(buf);if (Thread.currentThread().isInterrupted()) {sendMsg(3);try {is.close();} catch (Exception ex) {Log.e("tag", "error: " + ex.getMessage(), ex);}return;}if (numread == -1) {break;}fos.write(buf, 0, numread);downLoadFileSize += numread;sendMsg(1);} while (true);sendMsg(2);try {is.close();} catch (Exception ex) {Log.e("tag", "error: " + ex.getMessage(), ex);}}private void sendMsg(int flag) {Message msg = new Message();msg.what = flag;handler.sendMessage(msg);}}
//线程间通讯 public class MainActivity extends Activity {private TextView tv;private Handler handler = new Handler(){@Overridepublic void handleMessage(Message msg) {super.handleMessage(msg);String t = tv.getText().toString();tv.setText(t+"\n"+msg.obj);}};@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);tv = (TextView)findViewById(R.id.Tv);new Thread(){@Overridepublic void run() {super.run();int i = 0;String time;SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");//设置日期格式while(i++ < 20){time = df.format(new Date());Log.e("Thread---The Thread id is :",Thread.currentThread().getId()+"");Log.e("Thread---Time:",time);Message message=new Message();message.obj = time;handler.sendMessage(message);try {sleep(2000);} catch (InterruptedException e) {e.printStackTrace();}}}}.start();}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextViewandroid:id="@+id/Tv"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="接受来自子线程的消息如下：" /></LinearLayout>
//本地图片加载速度测试器 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><ImageViewandroid:id="@+id/Iv"android:layout_width="match_parent"android:layout_height="wrap_content"android:src="@drawable/baidu"/><Buttonandroid:id="@+id/Btn"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="点击开始循环加载图片"/><TextViewandroid:id="@+id/Tv"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="接受来自子线程的消息如下：\n" /></LinearLayout>public class MainActivity extends Activity {public final static int LOAD_PROGRESS = 0;public final static int LOAD_COMPLETE = 1;Button btn = null;TextView tv = null;Long mLoadStatr = 0L;Long mLoadEnd = 0L;Handler handler = new Handler() {@Overridepublic void handleMessage(Message msg) {switch (msg.what) {case LOAD_PROGRESS:tv.setText(tv.getText()+"时间："+msg.arg2+"\t当前读取到第" + msg.arg1 + "张图片\n");break;case LOAD_COMPLETE:tv.setText("读取结束一共耗时" + msg.arg1 + "毫秒\t平均读取时间:"+msg.arg2+"毫秒\n");break;}super.handleMessage(msg);}};@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {btn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {LoadImage();}});}private void findView() {btn = (Button) findViewById(R.id.Btn);tv = (TextView) findViewById(R.id.Tv);tv.setText("点击按钮开始测试加载图片的速度：\n");}public void LoadImage() {new Thread() {@Overridepublic void run() {mLoadStatr = System.currentTimeMillis();for (int i = 0; i < 100; i++) {ReadPic(MainActivity.this, R.drawable.baidu);Message msg = new Message();msg.what = LOAD_PROGRESS;msg.arg1 = i + 1;msg.arg2 = (int) System.currentTimeMillis();handler.sendMessage(msg);}mLoadEnd = System.currentTimeMillis();Message msg = new Message();msg.what = LOAD_COMPLETE;msg.arg1 = (int) (mLoadEnd - mLoadStatr);msg.arg2 = msg.arg1/100;handler.sendMessage(msg);}}.start();}public Bitmap ReadPic(Context context, int resId) {BitmapFactory.Options opt = new BitmapFactory.Options();opt.inPreferredConfig = Bitmap.Config.RGB_565;opt.inPurgeable = true;opt.inInputShareable = true;InputStream is = context.getResources().openRawResource(resId);return BitmapFactory.decodeStream(is, null, opt);}}
//Surface的读写刷新 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:background="@android:color/black" ><Buttonandroid:id="@+id/Btn1"android:layout_width="wrap_content"android:layout_height="wrap_content"android:background="@android:color/white"android:layout_weight="1"android:text="单个独立线程" ></Button><Buttonandroid:id="@+id/Btn2"android:layout_width="wrap_content"android:layout_height="wrap_content"android:background="@android:color/white"android:layout_weight="1"android:text="两个独立线程" ></Button></LinearLayout><SurfaceViewandroid:id="@+id/Sv"android:layout_width="fill_parent"android:layout_height="fill_parent" ></SurfaceView></LinearLayout>public class MainActivity extends Activity {Button btnSingleThread;Button btnDoubleThread;SurfaceView sfv;SurfaceHolder sfh;ArrayList<Integer> imgList = new ArrayList<Integer>();int imgWidth, imgHeight;Bitmap bitmap;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {btnSingleThread.setOnClickListener(new myOnClickListener());btnDoubleThread.setOnClickListener(new myOnClickListener());sfh.addCallback(new MyCallBack());}private void findView() {btnSingleThread = (Button) this.findViewById(R.id.Btn1);btnDoubleThread = (Button) this.findViewById(R.id.Btn2);sfv = (SurfaceView) this.findViewById(R.id.Sv);sfh = sfv.getHolder();}class myOnClickListener implements View.OnClickListener {@Overridepublic void onClick(View v) {if (v == btnSingleThread) {new Load_DrawImage(0, 0).start();} else if (v == btnDoubleThread) {new LoadImage().start();new DrawImage(imgWidth + 10, 0).start();}}}class MyCallBack implements SurfaceHolder.Callback {@Overridepublic void surfaceChanged(SurfaceHolder holder, int format, int width,int height) {Log.i("Surface:", "Change");}@Overridepublic void surfaceCreated(SurfaceHolder holder) {Log.i("Surface:", "Create");Field[] fields = R.drawable.class.getDeclaredFields();for (Field field : fields) {if (!"ic_launcher".equals(field.getName())){int index = 0;try {index = field.getInt(R.drawable.class);} catch (IllegalArgumentException e) {e.printStackTrace();} catch (IllegalAccessException e) {e.printStackTrace();}imgList.add(index);}}Bitmap bmImg = BitmapFactory.decodeResource(getResources(),imgList.get(0));imgWidth = bmImg.getWidth();imgHeight = bmImg.getHeight();}@Overridepublic void surfaceDestroyed(SurfaceHolder holder) {Log.i("Surface:", "Destroy");}}class Load_DrawImage extends Thread {int x, y;int imgIndex = 0;public Load_DrawImage(int x, int y) {this.x = x;this.y = y;}public void run() {while (true) {Canvas c = sfh.lockCanvas(new Rect(this.x, this.y, this.x+ imgWidth, this.y + imgHeight));Bitmap bmImg = BitmapFactory.decodeResource(getResources(),imgList.get(imgIndex));c.drawBitmap(bmImg, this.x, this.y, new Paint());imgIndex++;if (imgIndex == imgList.size())imgIndex = 0;sfh.unlockCanvasAndPost(c);}}};class DrawImage extends Thread {int x, y;public DrawImage(int x, int y) {this.x = x;this.y = y;}public void run() {while (true) {if (bitmap != null) {Canvas c = sfh.lockCanvas(new Rect(this.x, this.y, this.x+ imgWidth, this.y + imgHeight));c.drawBitmap(bitmap, this.x, this.y, new Paint());sfh.unlockCanvasAndPost(c);}}}};class LoadImage extends Thread {int imgIndex = 0;public void run() {while (true) {bitmap = BitmapFactory.decodeResource(getResources(),imgList.get(imgIndex));imgIndex++;if (imgIndex == imgList.size())imgIndex = 0;}}};}
//按两次物理返回键退出程序 public class MainActivity extends Activity {private boolean isExit=false;private Handler mHandler = new Handler(){@Overridepublic void handleMessage(Message msg) {super.handleMessage(msg);isExit=false;}};@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);}@Overridepublic boolean onKeyDown(int keyCode, KeyEvent event) {if(keyCode == KeyEvent.KEYCODE_BACK){if(!isExit){isExit=true;Toast.makeText(getApplicationContext(), "再按一次退出程序", Toast.LENGTH_SHORT).show();mHandler.sendEmptyMessageDelayed(0, 2000);}else{finish();System.exit(0);}}return false;}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextViewandroid:layout_width="fill_parent"android:layout_height="fill_parent"android:text="在2秒内点击两次返回键，可退出程序....." /></LinearLayout>
//线程嵌套 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextViewandroid:layout_width="fill_parent"android:layout_height="fill_parent"android:text="请查看LogCat中的子线程创建情况....." /></LinearLayout>public class MainActivity extends Activity{private Handler mainhandler;private Thread thread;private Thread th;private boolean FLAG_RUN = true;private int i = 0;private int j = 0;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);mainhandler = new Handler(cb);thread = new Thread(r);thread.start();}Runnable r = new Runnable(){@Overridepublic void run() {while (FLAG_RUN) {i++;Log.e("TAG","我是子线程" + i);childThread();try {thread.sleep(4000);mainhandler.obtainMessage(1).sendToTarget();} catch (InterruptedException e) {e.printStackTrace();}}}};Callback cb = new Callback(){@Overridepublic boolean handleMessage(Message msg) {if (msg.what == 1) {if (i < 2) {Toast.makeText(MainActivity.this, "子线程"+i+"创建成功", Toast.LENGTH_SHORT).show();FLAG_RUN = true;} else {FLAG_RUN = false;}}return true;}};private void childThread() {j = 0;th = new Thread() {@Overridepublic void run() { while (true) { if (j >= 3) { break;} else {j++;Log.e("TAG","我是子线程的子线程" + j);try {th.sleep(1000);} catch (InterruptedException e) {e.printStackTrace();}}}}};th.start();}}
//异步任务加载网络图片 public class ImageAsynTask extends AsyncTask<Void, Void, Drawable> {private ImageView m;private String imageurl;public ImageAsynTask(ImageView i,String t){m = i;imageurl = t;}@Overrideprotected Drawable doInBackground(Void... params) {return loadImages(imageurl);}@Overrideprotected void onPostExecute(Drawable result) {super.onPostExecute(result);if (null != result) {m.setImageDrawable(result);}else{m.setImageResource(R.drawable.failed);}}@Overrideprotected void onPreExecute() {super.onPreExecute();}public Drawable loadImages(String url) {try {return Drawable.createFromStream((InputStream) (new URL(url)).openStream(), "test");} catch (IOException e) {e.printStackTrace();}return null;}}public class MainActivity extends Activity {private ImageView mImage;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);mImage = (ImageView) findViewById(R.id.Iv);new ImageAsynTask(mImage, "http://img1.3lian.com/img2011/07/20/05.jpg").execute();}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><ImageViewandroid:id="@+id/Iv"android:layout_width="match_parent"android:layout_height="match_parent"android:layout_gravity="center"android:src="@drawable/load" /></LinearLayout>
//网站源代码查看器 public class HtmlAsynTask extends AsyncTask<Void, Void, String> {private TextView m;private String url;public HtmlAsynTask(TextView i,String t){m = i;url = t;}@Overrideprotected String doInBackground(Void... params) {return requestByHttpGet(url);}@Overrideprotected void onPostExecute(String result) {super.onPostExecute(result);if (null != result) {m.setText(result);}else{m.setText("加载失败");}}@Overrideprotected void onPreExecute() {super.onPreExecute();}public String requestByHttpGet(String url) {HttpGet httpGet = new HttpGet(url);HttpClient httpClient = new DefaultHttpClient();HttpResponse httpResp;try {httpResp = httpClient.execute(httpGet);if (httpResp.getStatusLine().getStatusCode() == 200) {String result = EntityUtils.toString(httpResp.getEntity(), "UTF-8");Log.e("TAG", "HttpGet方式请求成功，返回数据如下：");return result;} else {Log.e("TAG", "HttpGet方式请求失败");}} catch (ClientProtocolException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}return null;}}public class MainActivity extends Activity{private TextView tv;private EditText et;private Button btn;@Overrideprotected void onCreate (Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {btn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {tv.setText("Html加载中.........");String str = et.getText().toString();new HtmlAsynTask(tv, str).execute();}});}private void findView() {tv = (TextView) findViewById(R.id.Tv);et = (EditText)findViewById(R.id.Et);btn = (Button)findViewById(R.id.Btn);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><EditText android:id="@+id/Et"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="http://www.baidu.com"/><Button android:id="@+id/Btn"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="点击开始加载Html"/><ScrollView android:layout_width="match_parent"android:layout_height="match_parent"><TextViewandroid:id="@+id/Tv"android:layout_width="match_parent"android:layout_height="match_parent"/></ScrollView></LinearLayout>
//终止异步任务操作 public class HtmlAsynTask extends AsyncTask<Void, Void, String> {private TextView m;private String url;public HtmlAsynTask(TextView i,String t){m = i;url = t;}@Overrideprotected String doInBackground(Void... params) {return requestByHttpGet(url);}@Overrideprotected void onPostExecute(String result) {super.onPostExecute(result);Log.e("isCancelled()", isCancelled()+"");if (isCancelled()) {m.setText("取消加载");}else if (null != result) {m.setText(result);}else{m.setText("加载失败");}}@Overrideprotected void onPreExecute() {super.onPreExecute();}public String requestByHttpGet(String url) {HttpGet httpGet = new HttpGet(url);HttpClient httpClient = new DefaultHttpClient();HttpResponse httpResp;try {httpResp = httpClient.execute(httpGet);if (httpResp.getStatusLine().getStatusCode() == 200) {String result = EntityUtils.toString(httpResp.getEntity(), "UTF-8");Log.e("TAG", "HttpGet方式请求成功，返回数据如下：");return result;} else {Log.e("TAG", "HttpGet方式请求失败");}} catch (ClientProtocolException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}return null;}}public class MainActivity extends Activity{private TextView tv;private EditText et;private Button btnstart;private Button btnstop;protected HtmlAsynTask hat;@Overrideprotected void onCreate (Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {btnstart.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {tv.setText("Html加载中.........");String str = et.getText().toString();hat = new HtmlAsynTask(tv, str);hat.execute();}});btnstop.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {hat.cancel(true);}});}private void findView() {tv = (TextView) findViewById(R.id.Tv);et = (EditText)findViewById(R.id.Et);btnstart = (Button)findViewById(R.id.BtnStart);btnstop = (Button)findViewById(R.id.BtnStop);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><EditText android:id="@+id/Et"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="http://www.baidu.com"/><Button android:id="@+id/BtnStart"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="点击开始加载Html"/><Button android:id="@+id/BtnStop"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="点击终止加载Html"/><ScrollView android:layout_width="match_parent"android:layout_height="match_parent"><TextViewandroid:id="@+id/Tv"android:layout_width="match_parent"android:layout_height="match_parent"/></ScrollView></LinearLayout>
//异步任务进度展示 public class HtmlAsynTask extends AsyncTask<Void, Void, Integer> {private ProgressBar m;public HtmlAsynTask(ProgressBar i) {m = i;}@Overrideprotected Integer doInBackground(Void... params) {int i = 0;while (i < 100) {i+=10;publishProgress(i);try {Thread.sleep(1000);} catch (InterruptedException e) {}}return null;}@Overrideprotected void onPostExecute(Integer result) {super.onPostExecute(result);}@Overrideprotected void onPreExecute() {super.onPreExecute();}protected void publishProgress(int i) {m.setProgress(i);}}public class MainActivity extends Activity{private Button btn;private ProgressBar pb;@Overrideprotected void onCreate (Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {btn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {new HtmlAsynTask(pb).execute();}});}private void findView() {btn = (Button)findViewById(R.id.Btn);pb = (ProgressBar)findViewById(R.id.Pb);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><Button android:id="@+id/Btn"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="点击开始异步任务加载"/><ProgressBar android:id="@+id/Pb"android:layout_width="match_parent" android:layout_height="wrap_content"style="?android:attr/progressBarStyleHorizontal"android:layout_gravity="center_vertical" android:max="100" /> </LinearLayout>
Android程序内部的信息传递者
Android中系统Intent的使用
//Google搜索内容 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><EditText android:id="@+id/Et"android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="请输入要搜索的关键字"/><Button android:id="@+id/Btn"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="点击开始Google查询"/> </LinearLayout>public class MainActivity extends Activity{private Button btn;private EditText Et;@Overrideprotected void onCreate (Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {btn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {Intent intent = new Intent(); intent.setAction(Intent.ACTION_WEB_SEARCH); intent.putExtra(SearchManager.QUERY,Et.getText().toString());startActivity(intent); }});}private void findView() {btn = (Button)findViewById(R.id.Btn);Et = (EditText)findViewById(R.id.Et);}}
//打开浏览器浏览网页 public class MainActivity extends Activity{private Button btn;private EditText Et;@Overrideprotected void onCreate (Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {btn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {String url = Et.getText().toString();if (!"".equals(url)) {Uri uri = Uri.parse("http://"+url); Intent it = new Intent(Intent.ACTION_VIEW,uri); startActivity(it); }else{Toast.makeText(MainActivity.this,"请输入要跳转的网址...", Toast.LENGTH_SHORT).show();}}});}private void findView() {btn = (Button)findViewById(R.id.Btn);Et = (EditText)findViewById(R.id.Et);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><EditText android:id="@+id/Et"android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="请输入要打开的网址"/><Button android:id="@+id/Btn"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="点击打开浏览器显示网址"/> </LinearLayout>
//电话拨号软件 public class MainActivity extends Activity{private Button btn;private EditText Et;@Overrideprotected void onCreate (Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {btn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {String phonenum = Et.getText().toString();if (!"".equals(phonenum)) {Uri uri = Uri.parse("tel:" + phonenum);Intent it = new Intent(Intent.ACTION_CALL, uri); startActivity(it); }else{Toast.makeText(MainActivity.this,"请输入您要拨打的电话号码...", Toast.LENGTH_SHORT).show();}}});}private void findView() {btn = (Button)findViewById(R.id.Btn);Et = (EditText)findViewById(R.id.Et);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><EditText android:id="@+id/Et"android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="请输入拨打的电话号码"/><Button android:id="@+id/Btn"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="点击开始拨打电话"/> </LinearLayout>
//分享短信 public class MainActivity extends Activity{private Button btn;private EditText Et;@Overrideprotected void onCreate (Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {btn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {String msg = Et.getText().toString();if (!"".equals(msg)) {Intent it = new Intent(Intent.ACTION_VIEW);it.putExtra("sms_body", msg);it.setType("vnd.android-dir/mms-sms"); startActivity(it); }else{Toast.makeText(MainActivity.this,"请输入您要分享的短信内容...", Toast.LENGTH_SHORT).show();}}});}private void findView() {btn = (Button)findViewById(R.id.Btn);Et = (EditText)findViewById(R.id.Et);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><EditText android:id="@+id/Et"android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="请输入要分享的短信内容"/><Button android:id="@+id/Btn"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="点击开始分享"/> </LinearLayout>
//短信发送客户端 public class MainActivity extends Activity {private Button btn;private EditText EtMsg;private EditText EtNum;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {btn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {String msg = EtMsg.getText().toString();String number = EtNum.getText().toString();if (!"".equals(msg) && !"".equals(number)) {SmsManager smsManager = SmsManager.getDefault();PendingIntent sendIntent = PendingIntent.getBroadcast(MainActivity.this, 0, new Intent(), 0);smsManager.sendTextMessage(number, null, msg, sendIntent,null);Toast.makeText(MainActivity.this, "发送成功",Toast.LENGTH_SHORT).show();} else {Toast.makeText(MainActivity.this, "短信号码或短信内容为空...",Toast.LENGTH_SHORT).show();}}});}private void findView() {btn = (Button) findViewById(R.id.Btn);EtMsg = (EditText) findViewById(R.id.EtMsg);EtNum = (EditText) findViewById(R.id.EtNum);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><EditText android:id="@+id/EtNum"android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="请输入要接受短信的电话号码"/><EditText android:id="@+id/EtMsg"android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="请输入短信内容"/><Button android:id="@+id/Btn"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="发送短信"/> </LinearLayout>
//彩信分享客户端 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><EditText android:id="@+id/EtNum"android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="请输入要接受彩信的电话号码"/><EditText android:id="@+id/EtSub"android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="请输入彩信的主题"/><EditText android:id="@+id/EtMsg"android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="请输入彩信内容"/><Button android:id="@+id/Btn"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="发送彩信"/> </LinearLayout>public class MainActivity extends Activity {private Button btn;private EditText EtMsg;private EditText EtNum;private EditText EtSub;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {btn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {String msg = EtMsg.getText().toString();String number = EtNum.getText().toString();String sub = EtSub.getText().toString();if (!"".equals(msg) && !"".equals(number)&& !"".equals(sub)) {Uri uri = Uri.parse("content://media/external/images/media/01");Intent intent = new Intent(Intent.ACTION_SEND);intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);intent.putExtra(Intent.EXTRA_STREAM,uri);intent.putExtra("subject", sub); intent.putExtra("address", number); intent.putExtra("sms_body", msg); intent.putExtra(Intent.EXTRA_TEXT, "it's EXTRA_TEXT");intent.setType("image/*");intent.setClassName("com.android.mms","com.android.mms.ui.ComposeMessageActivity");startActivity(intent);} else {Toast.makeText(MainActivity.this, "彩信号码或彩信内容为空...",Toast.LENGTH_SHORT).show();}}});}private void findView() {btn = (Button) findViewById(R.id.Btn);EtMsg = (EditText) findViewById(R.id.EtMsg);EtNum = (EditText) findViewById(R.id.EtNum);EtSub = (EditText) findViewById(R.id.EtSub);}}
//Email发送客户端 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><EditText android:id="@+id/EtEmail"android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="请输入要接受邮件的邮箱地址"/><EditText android:id="@+id/EtSub"android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="请输入邮件的主题"/><EditText android:id="@+id/EtMsg"android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="请输入邮件的内容"/><Button android:id="@+id/Btn"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="发送邮件"/> </LinearLayout>public class MainActivity extends Activity {private Button btn;private EditText EtMsg;private EditText EtEmail;private EditText EtSub;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {btn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {String msg = EtMsg.getText().toString();String emailadd = EtEmail.getText().toString();String sub = EtSub.getText().toString();if (!"".equals(msg) && !"".equals(emailadd)&& !"".equals(sub)) {Intent i = new Intent(Intent.ACTION_SEND); i.setType("text/plain"); //模拟器请使用这行i.putExtra(Intent.EXTRA_EMAIL, new String[]{emailadd}); i.putExtra(Intent.EXTRA_SUBJECT,sub); i.putExtra(Intent.EXTRA_TEXT,msg);startActivity(Intent.createChooser(i, "请选择发送邮件的客户端"));} else {Toast.makeText(MainActivity.this, "接收邮件地址或邮件内容为空...",Toast.LENGTH_SHORT).show();}}});}private void findView() {btn = (Button) findViewById(R.id.Btn);EtMsg = (EditText) findViewById(R.id.EtMsg);EtEmail = (EditText) findViewById(R.id.EtEmail);EtSub = (EditText) findViewById(R.id.EtSub);}}
//启动多媒体播放 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextView android:id="@+id/Tv"android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="点击按钮播放/sdcard/song.mp3文件"/><Button android:id="@+id/Btn"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="播放声音"/> </LinearLayout>public class MainActivity extends Activity {private Button btn;private TextView Tv;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {btn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {Intent it = new Intent(Intent.ACTION_VIEW);Uri uri = Uri.parse("file:///sdcard/song.mp3");it.setDataAndType(uri, "audio/mp3");startActivity(it);}});}private void findView() {btn = (Button) findViewById(R.id.Btn);Tv = (TextView) findViewById(R.id.Tv);}}
//安装指定的应用程序 public class MainActivity extends Activity {private Button btn;private TextView Tv;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {btn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {Intent intent = new Intent(Intent.ACTION_VIEW); intent.setDataAndType(Uri.parse("file://" + "/sdcard/XMNotes.apk"), "application/vnd.android.package-archive"); startActivity(intent); }});}private void findView() {btn = (Button) findViewById(R.id.Btn);Tv = (TextView) findViewById(R.id.Tv);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextView android:id="@+id/Tv"android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="点击安装file:///sdcard/XMNotes.apk文件"/><Button android:id="@+id/Btn"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="安装软件"/> </LinearLayout>
//卸载指定的应用程序 public class MainActivity extends Activity {private Button btn;private TextView Tv;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {btn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {Uri packageURI = Uri.parse("package:com.xiaomi.notes"); Intent uninstallIntent = new Intent(Intent.ACTION_DELETE,packageURI); startActivity(uninstallIntent); }});}private void findView() {btn = (Button) findViewById(R.id.Btn);Tv = (TextView) findViewById(R.id.Tv);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextView android:id="@+id/Tv"android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="点击卸载com.xiaomi.notes软件"/><Button android:id="@+id/Btn"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="卸载软件"/> </LinearLayout>
//打开照相机获取图片 public class MainActivity extends Activity {private Button btn;private TextView Tv;private ImageView Iv;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {btn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); startActivityForResult(intent, 1);}});}private void findView() {btn = (Button) findViewById(R.id.Btn);Tv = (TextView) findViewById(R.id.Tv);Iv = (ImageView) findViewById(R.id.Iv);}@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {super.onActivityResult(requestCode, resultCode, data);if (requestCode == 1) {if (resultCode == RESULT_OK) {Bitmap bmPhoto = (Bitmap) data.getExtras().get("data");Iv.setImageBitmap(bmPhoto);}}}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextView android:id="@+id/Tv"android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="点击拍照预览效果"/><ImageView android:id="@+id/Iv"android:layout_width="match_parent"android:layout_height="wrap_content"android:src="@drawable/ic_launcher"/><Button android:id="@+id/Btn"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="点击按钮使用摄像头拍照"/></LinearLayout>
//打开系统图库获取图片 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextView android:id="@+id/Tv"android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="点击浏览系统照片效果"/><ImageView android:id="@+id/Iv"android:layout_width="match_parent"android:layout_height="wrap_content"android:src="@drawable/ic_launcher"/><Button android:id="@+id/Btn"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="点击按钮选择系统照片"/></LinearLayout>public class MainActivity extends Activity {private Button btn;private TextView Tv;private ImageView Iv;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {btn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {Intent intent = new Intent(); intent.setType("image/*"); intent.setAction(Intent.ACTION_GET_CONTENT); startActivityForResult(intent, 1); }});}private void findView() {btn = (Button) findViewById(R.id.Btn);Tv = (TextView) findViewById(R.id.Tv);Iv = (ImageView) findViewById(R.id.Iv);}@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {super.onActivityResult(requestCode, resultCode, data);if (requestCode == 1) {if (resultCode == RESULT_OK) {Uri uri = data.getData(); ContentResolver cr = this.getContentResolver(); try { Bitmap bitmap = BitmapFactory.decodeStream(cr.openInputStream(uri)); Iv.setImageBitmap(bitmap); } catch (FileNotFoundException e) { Log.e("Exception", e.getMessage(),e); } }}}}
//打开录音程序录音 public class MainActivity extends Activity {private Button btn;private TextView Tv;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {btn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {Intent intent = new Intent(Media.RECORD_SOUND_ACTION);startActivityForResult(intent, 1); }});}private void findView() {btn = (Button) findViewById(R.id.Btn);Tv = (TextView) findViewById(R.id.Tv);}@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {super.onActivityResult(requestCode, resultCode, data);if (requestCode == 1) {if (resultCode == RESULT_OK) {String dataFile=data.getDataString() ;String dataUri=getIntent().getDataString();Log.e("dataFile", dataFile);Log.e("dataUri", dataUri);}}}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextView android:id="@+id/Tv"android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="点击下面的打开录音机的按钮"/><Button android:id="@+id/Btn"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="点击打开录音机"/></LinearLayout>
//打开已安装的应用程序信息 public class MainActivity extends Activity {private Button btn;private EditText Et;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {btn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {Intent intent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS); Uri uri = Uri.fromParts("package",Et.getText().toString(), null); intent.setData(uri); startActivity(intent); }});}private void findView() {btn = (Button) findViewById(R.id.Btn);Et = (EditText) findViewById(R.id.Et);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextView android:id="@+id/Tv"android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="点击下面的打开软件信息的按钮"/><EditText android:id="@+id/Et"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="com.wyl.example"/><Button android:id="@+id/Btn"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="点击打开应用信息"/></LinearLayout>
//打开软件市场搜索应用 public class MainActivity extends Activity {private Button btn;private EditText Et;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {btn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {Uri uri = Uri.parse("market://search?q=pname:"+Et.getText().toString());Intent it = new Intent(Intent.ACTION_VIEW, uri);startActivity(it);}});}private void findView() {btn = (Button) findViewById(R.id.Btn);Et = (EditText) findViewById(R.id.Et);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextView android:id="@+id/Tv"android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="点击下面的查找软件的按钮"/><EditText android:id="@+id/Et"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="小米便签"/><Button android:id="@+id/Btn"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="点击查找应用"/></LinearLayout>
//选择联系人功能 public class MainActivity extends Activity {private Button btn;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {btn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {Intent intent = new Intent(); intent.setAction(Intent.ACTION_VIEW); intent.setData(Contacts.People.CONTENT_URI); startActivity(intent);}});}private void findView() {btn = (Button) findViewById(R.id.Btn);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextView android:id="@+id/Tv"android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="点击下面的打开联系人界面的按钮"/><Button android:id="@+id/Btn"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="点击打开联系人应用"/></LinearLayout>
//添加联系人功能 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextView android:id="@+id/Tv"android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="点击下面的添加联系人界面的按钮"/><EditText android:id="@+id/EtName"android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="联系人姓名"/><EditText android:id="@+id/EtPhone"android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="联系人电话"/><EditText android:id="@+id/EtEmail"android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="联系人邮箱"/><EditText android:id="@+id/EtCompany"android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="联系人公司"/><Button android:id="@+id/Btn"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="点击添加联系人应用"/></LinearLayout>public class MainActivity extends Activity {private Button btn;private EditText EtName;private EditText EtPhone;private EditText EtEmail;private EditText EtCompany;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {btn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {Intent it = new Intent(Contacts.Intents.Insert.ACTION);it.setType(Contacts.People.CONTENT_TYPE);it.putExtra(Contacts.Intents.Insert.NAME, EtName.getText().toString());it.putExtra(Contacts.Intents.Insert.PHONE, EtPhone.getText().toString());it.putExtra(Contacts.Intents.Insert.EMAIL, EtEmail.getText().toString());it.putExtra(Contacts.Intents.Insert.COMPANY, EtCompany.getText().toString());startActivity(it);}});}private void findView() {btn = (Button) findViewById(R.id.Btn);EtName = (EditText) findViewById(R.id.EtName);EtPhone = (EditText) findViewById(R.id.EtPhone);EtEmail = (EditText) findViewById(R.id.EtEmail);EtCompany = (EditText) findViewById(R.id.EtCompany);}}
//程序内部启动外部程序 public class MainActivity extends Activity {private Button btn;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {btn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {Intent intent = new Intent(); intent = getPackageManager().getLaunchIntentForPackage("com.xiaomi.notes"); startActivity(intent);}});}private void findView() {btn = (Button) findViewById(R.id.Btn);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextView android:id="@+id/Tv"android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="点击下面的启动小米便签的按钮"/><Button android:id="@+id/Btn"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="点击启动小米便签"/></LinearLayout>
//启动Google地图显示某个位置 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextView android:id="@+id/Tv"android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="点击下面的启动谷歌地图"/><Button android:id="@+id/Btn"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="点击启动谷歌地图"/></LinearLayout>public class MainActivity extends Activity {private Button btn;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {btn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {Uri uri = Uri.parse("geo:39.888402,116.409561");Intent it = new Intent(Intent.ACTION_VIEW,uri);startActivity(it);}});}private void findView() {btn = (Button) findViewById(R.id.Btn);}}
//启动Google地图进行路径规划 public class MainActivity extends Activity {private Button btn;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {btn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {Uri uri = Uri.parse("https://maps.google.com/maps?f=d&saddr=39.88445+116.257217&daddr=39.985538+116.544921&hl=cn");Intent it = new Intent(Intent.ACTION_VIEW,uri);startActivity(it);}});}private void findView() {btn = (Button) findViewById(R.id.Btn);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextView android:id="@+id/Tv"android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="点击启动谷歌地图进行路径规划"/><Button android:id="@+id/Btn"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="启动谷歌地图进行路径规划"/></LinearLayout>
//登录页面功能 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextViewandroid:id="@+id/Tv"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="恭喜您已登录" /></LinearLayout><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="horizontal" ><TextViewandroid:layout_width="match_parent"android:layout_height="wrap_content"android:layout_weight="2"android:text="用户名：" /><EditTextandroid:id="@+id/EtName"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_weight="1"android:hint="用户名" /></LinearLayout><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="horizontal" ><TextViewandroid:layout_width="match_parent"android:layout_height="wrap_content"android:layout_weight="2"android:text="密码：" /><EditTextandroid:id="@+id/EtPwd"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_weight="1"android:numeric="integer"android:password="true"android:hint="密码" /></LinearLayout><Buttonandroid:id="@+id/Btn"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="登录" /></LinearLayout>public class SecActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_sec);Intent i = getIntent();String name = i.getStringExtra("USERNAME");TextView tv = (TextView)findViewById(R.id.Tv);tv.setText(name+"，欢迎您登录本系统");}}public class MainActivity extends Activity {private Button btn;private EditText EtName;private EditText EtPwd;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {btn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {String name = EtName.getText().toString();String pwd = EtPwd.getText().toString();if (isUser(name,pwd)) {Intent i = new Intent(MainActivity.this,SecActivity.class);i.putExtra("USERNAME", name);startActivity(i);}else{Toast.makeText(MainActivity.this, "用户名密码错误",Toast.LENGTH_SHORT).show();}}});}protected boolean isUser(String name, String pwd) {if ("admin".equals(name) && "123".equals(pwd)) {return true;}else{return false;}}private void findView() {btn = (Button) findViewById(R.id.Btn);EtName = (EditText) findViewById(R.id.EtName);EtPwd = (EditText) findViewById(R.id.EtPwd);}}
//注册页面功能 public class MainActivity extends Activity {private Button btn;private EditText EtName;private EditText EtPwd;private EditText EtEmail;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {btn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {String name = EtName.getText().toString();String pwd = EtPwd.getText().toString();String email = EtEmail.getText().toString();if (!"".equals(name)&& !"".equals(pwd)&& !"".equals(email)) {User u = new User();u.setEamil(email);u.setName(name);u.setPwd(pwd);Intent i = new Intent(MainActivity.this,SecActivity.class);i.putExtra("USER", u);startActivity(i);}else{Toast.makeText(MainActivity.this, "输入信息为空",Toast.LENGTH_SHORT).show();}}});}private void findView() {btn = (Button) findViewById(R.id.Btn);EtName = (EditText) findViewById(R.id.EtName);EtPwd = (EditText) findViewById(R.id.EtPwd);EtEmail = (EditText) findViewById(R.id.EtEmail);}}public class SecActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_sec);Intent i = getIntent();User u = (User) i.getSerializableExtra("USER");TextView tv = (TextView)findViewById(R.id.Tv);tv.setText("用户的注册信息为："+u.toString());}}public class User implements Serializable{private static final long serialVersionUID = 1L;public String name;public String pwd;public String eamil;public String getName() {return name;}public void setName(String name) {this.name = name;}public String getPwd() {return pwd;}public void setPwd(String pwd) {this.pwd = pwd;}public String getEamil() {return eamil;}public void setEamil(String eamil) {this.eamil = eamil;}@Overridepublic String toString() {return "User [name=" + name + ", pwd=" + pwd + ", eamil=" + eamil + "]";}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="horizontal" ><TextViewandroid:layout_width="match_parent"android:layout_height="wrap_content"android:layout_weight="2"android:text="用户名：" /><EditTextandroid:id="@+id/EtName"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_weight="1"android:hint="用户名" /></LinearLayout><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="horizontal" ><TextViewandroid:layout_width="match_parent"android:layout_height="wrap_content"android:layout_weight="2"android:text="密码：" /><EditTextandroid:id="@+id/EtPwd"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_weight="1"android:hint="密码" /></LinearLayout><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="horizontal" ><TextViewandroid:layout_width="match_parent"android:layout_height="wrap_content"android:layout_weight="2"android:text="邮箱：" /><EditTextandroid:id="@+id/EtEmail"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_weight="1"android:hint="邮箱" /></LinearLayout><Buttonandroid:id="@+id/Btn"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="注册" /></LinearLayout><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextViewandroid:id="@+id/Tv"android:layout_width="match_parent"android:layout_height="wrap_content"/></LinearLayout>
//获取随机验证码功能 public class MainActivity extends Activity {private Button btn;private TextView Tv;protected static final int MyrequestCode = 100;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {btn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {Intent i = new Intent(MainActivity.this, SecActivity.class);startActivityForResult(i, MyrequestCode);}});}private void findView() {btn = (Button) findViewById(R.id.Btn);Tv = (TextView) findViewById(R.id.Tv);}@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {super.onActivityResult(requestCode, resultCode, data);if (requestCode == MyrequestCode) {int res = data.getIntExtra("RANDOM", 0);Tv.setText("您获取的随机数是："+res);}}}public class SecActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_sec);Intent i = getIntent();int r=(int)(Math.random()*1000);i.putExtra("RANDOM", r);setResult(MainActivity.MyrequestCode, i);finish();}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextViewandroid:id="@+id/Tv"android:layout_width="match_parent"android:layout_height="wrap_content"/></LinearLayout><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextViewandroid:id="@+id/Tv"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="点击获取随机数验证码" /><Buttonandroid:id="@+id/Btn"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="获取随机数验证码" /></LinearLayout>
//模拟站内搜索 public class MainActivity extends Activity {private Button btn;private EditText Et;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {btn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {String key = Et.getText().toString();if (!"".equals(key)) {Intent i = new Intent();i.setAction("wyl.com.test");i.putExtra("KEY",key);startActivity(i);}else{Toast.makeText(MainActivity.this,"搜索关键字为空",Toast.LENGTH_SHORT).show();}}});}private void findView() {btn = (Button) findViewById(R.id.Btn);Et = (EditText) findViewById(R.id.Et);}}public class SecActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_sec);Intent i = getIntent();String key = i.getStringExtra("KEY");TextView tv = (TextView)findViewById(R.id.Tv);tv.setText("您要搜索的关键字是："+key);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextViewandroid:id="@+id/Tv"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="点击跳转站内搜索效果" /><EditTextandroid:id="@+id/Et"android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="请输入搜索关键字" /><Buttonandroid:id="@+id/Btn"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="点击跳转站内搜索页面" /></LinearLayout><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextViewandroid:id="@+id/Tv"android:layout_width="match_parent"android:layout_height="wrap_content"/></LinearLayout>Android的数据存储
Android中的文件操作
//可记住用户名密码的登录界面 public class MainActivity extends Activity {private EditText mEtUserName; private EditText mEtPassWord;private CheckBox mCbKeepPsd; private Button mBtnLogin; private SharedPreferences mSpSettings = null;private static final String PREFS_NAME = "NamePwd";@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();getData();}private void findView() {mEtUserName = (EditText) findViewById(R.id.et_username);mEtPassWord = (EditText) findViewById(R.id.et_password);mCbKeepPsd = (CheckBox) findViewById(R.id.cb_keeppsd);mBtnLogin = (Button) findViewById(R.id.btn_login);}private void setListener() {mBtnLogin.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {if ("wyl".equals(mEtUserName.getText().toString())&& "123".equals(mEtPassWord.getText().toString())) {if (mCbKeepPsd.isChecked()) {mSpSettings = getSharedPreferences(PREFS_NAME,MODE_PRIVATE);Editor edit = mSpSettings.edit();edit.putBoolean("isKeep", true);edit.putString("username", mEtUserName.getText().toString());edit.putString("password", mEtPassWord.getText().toString());edit.commit(); } else {mSpSettings = getSharedPreferences(PREFS_NAME,MODE_PRIVATE);Editor edit = mSpSettings.edit();edit.putBoolean("isKeep", false);edit.putString("username", "");edit.putString("password", "");edit.commit(); }Intent intent = new Intent(MainActivity.this,SuccessActivity.class);startActivity(intent);} else {Toast.makeText(getApplicationContext(), "用户名或密码错误",Toast.LENGTH_SHORT).show();}}});}@Overrideprotected void onResume() {super.onResume();getData();}private void getData() {mSpSettings = getSharedPreferences(PREFS_NAME, MODE_PRIVATE);if (mSpSettings.getBoolean("isKeep", false)) {mEtUserName.setText(mSpSettings.getString("username", ""));mEtPassWord.setText(mSpSettings.getString("password", ""));} else {mEtUserName.setText("");mEtPassWord.setText("");}}}public class SuccessActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.success_main);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/LinearLayout1"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"tools:context=".MainActivity" ><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:layout_margin="10dp"android:orientation="horizontal" ><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_weight="1"android:layout_marginRight="5dp"android:text="@string/tv_username" /><EditTextandroid:id="@+id/et_username"android:layout_weight="3"android:layout_width="wrap_content"android:layout_height="wrap_content" /></LinearLayout><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:layout_margin="10dp"android:orientation="horizontal" ><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_weight="1"android:layout_marginRight="5dp"android:text="@string/tv_password" /><EditTextandroid:id="@+id/et_password"android:layout_weight="3"android:layout_width="wrap_content"android:layout_height="wrap_content"android:password="true" /></LinearLayout><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:layout_marginLeft="10dp"android:layout_marginRight="10dp"android:layout_marginTop="5dp"android:orientation="horizontal" ><CheckBoxandroid:id="@+id/cb_keeppsd"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_weight="1"android:text="@string/cb_keeppsd" android:checked="true"/><Buttonandroid:id="@+id/btn_login"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_weight="3"android:layout_marginLeft="20dp"android:text="@string/btn_login" /></LinearLayout></LinearLayout><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/RelativeLayout1"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"tools:context=".MainActivity" ><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_centerInParent="true"android:text="@string/tv_success"android:textSize="20sp" /></RelativeLayout>
//系统的设置界面 public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);Button btnSetting = (Button)findViewById(R.id.btn_setting);btnSetting.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {Intent intent = new Intent(MainActivity.this, SettingActivity.class);startActivity(intent);}});}}public class PreferenceSetting extends PreferenceFragment implementsOnPreferenceClickListener, OnPreferenceChangeListener {private CheckBoxPreference mapply_wifiPreference; private CheckBoxPreference mapply_internetPreference; private ListPreference depart_valuePreference; private EditTextPreference number_editPreference; private Preference mwifi_settingPreference;private Context mContext;private static final String TAG = "PreferenceSetting";public PreferenceSetting(Context context) {mContext = context;}@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);addPreferencesFromResource(R.xml.mypreference);findView();setListener();}private void findView() {mapply_wifiPreference = (CheckBoxPreference) findPreference("apply_wifi");mapply_internetPreference = (CheckBoxPreference) findPreference("apply_internet");depart_valuePreference = (ListPreference) findPreference("depart_value");number_editPreference = (EditTextPreference) findPreference("number_edit");mwifi_settingPreference = (Preference) findPreference("wifi_setting");}private void setListener() {mapply_internetPreference.setOnPreferenceClickListener(this);mapply_internetPreference.setOnPreferenceChangeListener(this);depart_valuePreference.setOnPreferenceClickListener(this);depart_valuePreference.setOnPreferenceChangeListener(this);number_editPreference.setOnPreferenceClickListener(this);number_editPreference.setOnPreferenceChangeListener(this);mwifi_settingPreference.setOnPreferenceClickListener(this);}@Overridepublic boolean onPreferenceClick(Preference preference) {Log.e(TAG,"onPreferenceClick----->" + String.valueOf(preference.getKey()));return false;}@Overridepublic boolean onPreferenceChange(Preference preference, Object objValue) {Log.i(TAG,"onPreferenceChange----->"+ String.valueOf(preference.getKey()));if (preference == mapply_wifiPreference) {Log.i(TAG, "Wifi CB, and isCheckd = " + String.valueOf(objValue));} else if (preference.getKey().equals("apply_internet")) {Log.i(TAG,"internet CB, and isCheckd = " + String.valueOf(objValue));} else if (preference == depart_valuePreference) {Log.i(TAG, " Old Value" + depart_valuePreference.getValue()+ " NewDeptName" + objValue);} else if (preference.getKey().equals("wifi_setting")) {Log.i(TAG, "change" + String.valueOf(objValue));mwifi_settingPreference.setTitle("its turn me."); } else if (preference == number_editPreference) {Log.i(TAG, "Old Value = " + String.valueOf(objValue));}return true; }@Overridepublic boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen,Preference preference) {Log.i(TAG, "onPreferenceTreeClick----->" + preference.getKey());if (preference == mapply_wifiPreference) {Log.e(TAG," Wifi , and isCheckd ="+ mapply_wifiPreference.isChecked());} else if (preference.getKey().equals("apply_internet")) {Log.e(TAG, " internet , and isCheckd = "+ mapply_internetPreference.isChecked());} else if (preference == depart_valuePreference) {Log.e(TAG, " department CB,and selectValue = "+ depart_valuePreference.getValue() + ", Text="+ depart_valuePreference.getEntry());} else if (preference.getKey().equals("wifi_setting")) {Log.e(TAG," wifi , and isCheckd = "+ mapply_wifiPreference.isChecked());} else if (preference == number_editPreference) {Log.e(TAG, "Old Value=" + number_editPreference.getText()+ ", New Value="+ number_editPreference.getEditText().toString());}if (preference.getKey().equals("wifi_setting")) {Intent i = new Intent(mContext, WifiSettingActivity.class); startActivity(i);return true;}return super.onPreferenceTreeClick(preferenceScreen, preference);}}public class SettingActivity extends Activity{@SuppressLint("NewApi")@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);FragmentManager fragmentManager = getFragmentManager(); FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction(); PreferenceSetting setting = new PreferenceSetting(this); fragmentTransaction.replace(android.R.id.content, setting); fragmentTransaction.addToBackStack(null); fragmentTransaction.commit(); }}public class WifiSettingActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.wifisetting_main);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"tools:context=".MainActivity" ><Buttonandroid:id="@+id/btn_setting"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_centerInParent="true"android:text="@string/setting" /></LinearLayout><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/RelativeLayout1"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"tools:context=".MainActivity" ><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_centerInParent="true"android:text="WIFI设置页面"android:textSize="20sp" /></RelativeLayout>
//系统图片剪裁 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/LinearLayout1"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"tools:context=".MainActivity" ><ImageViewandroid:id="@+id/imageView"android:layout_width="wrap_content"android:layout_height="wrap_content" /><Buttonandroid:id="@+id/selectImageBtn"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="选择图片" /></LinearLayout>public class MainActivity extends Activity {private static final int TAKE_PICTURE = 0; private static final int CHOOSE_PICTURE = 1; private static final int CROP = 2; private static final int CROP_PICTURE = 3;private Button mBtnSlect; private ImageView mIvShow;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void findView() {mBtnSlect = (Button) findViewById(R.id.selectImageBtn);mIvShow = (ImageView) findViewById(R.id.imageView);}private void setListener() {mBtnSlect.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {showPicturePicker(MainActivity.this);}});}public void showPicturePicker(Context context) {AlertDialog.Builder builder = new AlertDialog.Builder(context);builder.setTitle("图片来源");builder.setNegativeButton("取消", null);builder.setItems(new String[] { "拍照", "相册" },new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {switch (which) {case TAKE_PICTURE:Uri imageUri = null;String fileName = null;Intent openCameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);SharedPreferences sharedPreferences = getSharedPreferences("temp", Context.MODE_WORLD_WRITEABLE);ImageTools.deletePhotoAtPathAndName(Environment.getExternalStorageDirectory().getAbsolutePath(), sharedPreferences.getString("tempName", ""));fileName = String.valueOf(System.currentTimeMillis()) + ".jpg";Editor editor = sharedPreferences.edit();editor.putString("tempName", fileName);editor.commit();imageUri = Uri.fromFile(new File(Environment.getExternalStorageDirectory(), fileName));openCameraIntent.putExtra(MediaStore.EXTRA_OUTPUT,imageUri);startActivityForResult(openCameraIntent,CROP);break;case CHOOSE_PICTURE:Intent openAlbumIntent = new Intent(Intent.ACTION_GET_CONTENT);openAlbumIntent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,"image/*");startActivityForResult(openAlbumIntent,CROP);break;default:break;}}});builder.create().show();}@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {super.onActivityResult(requestCode, resultCode, data);if (resultCode == RESULT_OK) {switch (requestCode) {case CROP:Uri uri = null;if (data != null) {uri = data.getData();} else {String fileName = getSharedPreferences("temp",Context.MODE_WORLD_WRITEABLE).getString("tempName","");uri = Uri.fromFile(new File(Environment.getExternalStorageDirectory(), fileName));}cropImage(uri, 500, 500, CROP_PICTURE);break;case CROP_PICTURE:Bitmap photo = null;Uri photoUri = data.getData();if (photoUri != null) {photo = BitmapFactory.decodeFile(photoUri.getPath());}if (photo == null) {Bundle extra = data.getExtras();if (extra != null) {photo = (Bitmap) extra.get("data");ByteArrayOutputStream stream = new ByteArrayOutputStream();photo.compress(Bitmap.CompressFormat.JPEG, 100, stream);}}mIvShow.setImageBitmap(photo);break;default:break;}}}public void cropImage(Uri uri, int outputX, int outputY, int requestCode) {Intent intent = new Intent("com.android.camera.action.CROP");intent.setDataAndType(uri, "image/*");intent.putExtra("crop", "true");intent.putExtra("aspectX", 1); intent.putExtra("aspectY", 1); intent.putExtra("outputX", outputX); intent.putExtra("outputY", outputY);intent.putExtra("outputFormat", "JPEG"); intent.putExtra("noFaceDetection", true);intent.putExtra("return-data", true);startActivityForResult(intent, requestCode);}}public final class ImageTools {/*** drawable 转换 bitmap* * @param drawable* @return*/public static Bitmap drawableToBitmap(Drawable drawable) {int w = drawable.getIntrinsicWidth();int h = drawable.getIntrinsicHeight();Bitmap.Config config = drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888: Bitmap.Config.RGB_565;Bitmap bitmap = Bitmap.createBitmap(w, h, config);Canvas canvas = new Canvas(bitmap);drawable.setBounds(0, 0, w, h);drawable.draw(canvas);return bitmap;}/*** Bitmap 转换 drawable* * @param bitmap* @return*/public static Drawable bitmapToDrawable(Bitmap bitmap) {return new BitmapDrawable(bitmap);}/*** Input stream to bitmap* 输入流转bitmap* @param inputStream* @return* @throws Exception*/public static Bitmap inputStreamToBitmap(InputStream inputStream)throws Exception {return BitmapFactory.decodeStream(inputStream);}/*** Byte transfer to bitmap* 字节转bitmap* @param byteArray* @return*/public static Bitmap byteToBitmap(byte[] byteArray) {if (byteArray.length != 0) {return BitmapFactory.decodeByteArray(byteArray, 0, byteArray.length);} else {return null;}}/*** Byte transfer to drawable* 字节转drawable* @param byteArray* @return*/public static Drawable byteToDrawable(byte[] byteArray) {ByteArrayInputStream ins = null;if (byteArray != null) {ins = new ByteArrayInputStream(byteArray);}return Drawable.createFromStream(ins, null);}/*** Bitmap transfer to bytes* bitmap 转 bytes* @param byteArray* @return*/public static byte[] bitmapToBytes(Bitmap bm) {byte[] bytes = null;if (bm != null) {ByteArrayOutputStream baos = new ByteArrayOutputStream();bm.compress(Bitmap.CompressFormat.PNG, 100, baos);bytes = baos.toByteArray();}return bytes;}/*** Drawable transfer to bytes* Drawable 转 bytes* @param drawable* @return*/public static byte[] drawableToBytes(Drawable drawable) {BitmapDrawable bitmapDrawable = (BitmapDrawable) drawable;Bitmap bitmap = bitmapDrawable.getBitmap();byte[] bytes = bitmapToBytes(bitmap);;return bytes;}/*** Create reflection images* 镜像转换* @param bitmap* @return*/public static Bitmap createReflectionImageWithOrigin(Bitmap bitmap) {final int reflectionGap = 4;int w = bitmap.getWidth();int h = bitmap.getHeight();Matrix matrix = new Matrix();matrix.preScale(1, -1);Bitmap reflectionImage = Bitmap.createBitmap(bitmap, 0, h / 2, w,h / 2, matrix, false);Bitmap bitmapWithReflection = Bitmap.createBitmap(w, (h + h / 2),Config.ARGB_8888);Canvas canvas = new Canvas(bitmapWithReflection);canvas.drawBitmap(bitmap, 0, 0, null);Paint deafalutPaint = new Paint();canvas.drawRect(0, h, w, h + reflectionGap, deafalutPaint);canvas.drawBitmap(reflectionImage, 0, h + reflectionGap, null);Paint paint = new Paint();LinearGradient shader = new LinearGradient(0, bitmap.getHeight(), 0,bitmapWithReflection.getHeight() + reflectionGap, 0x70ffffff,0x00ffffff, TileMode.CLAMP);paint.setShader(shader);// Set the Transfer mode to be porter duff and destination inpaint.setXfermode(new PorterDuffXfermode(Mode.DST_IN));// Draw a rectangle using the paint with our linear gradientcanvas.drawRect(0, h, w, bitmapWithReflection.getHeight()+ reflectionGap, paint);return bitmapWithReflection;}/*** Get rounded corner images* 生成圆角图片* @param bitmap* @param roundPx* 5 10* @return*/public static Bitmap getRoundedCornerBitmap(Bitmap bitmap, float roundPx) {int w = bitmap.getWidth();int h = bitmap.getHeight();Bitmap output = Bitmap.createBitmap(w, h, Config.ARGB_8888);Canvas canvas = new Canvas(output);final int color = 0xff424242;final Paint paint = new Paint();final Rect rect = new Rect(0, 0, w, h);final RectF rectF = new RectF(rect);paint.setAntiAlias(true);canvas.drawARGB(0, 0, 0, 0);paint.setColor(color);canvas.drawRoundRect(rectF, roundPx, roundPx, paint);paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));canvas.drawBitmap(bitmap, rect, rect, paint);return output;}/*** Resize the bitmap* bitmap调整大小* @param bitmap* @param width* @param height* @return*/public static Bitmap zoomBitmap(Bitmap bitmap, int width, int height) {int w = bitmap.getWidth();int h = bitmap.getHeight();Matrix matrix = new Matrix();float scaleWidth = ((float) width / w);float scaleHeight = ((float) height / h);matrix.postScale(scaleWidth, scaleHeight);Bitmap newbmp = Bitmap.createBitmap(bitmap, 0, 0, w, h, matrix, true);return newbmp;}/*** Resize the drawable* drawable 调整大小* @param drawable* @param w* @param h* @return*/public static Drawable zoomDrawable(Drawable drawable, int w, int h) {int width = drawable.getIntrinsicWidth();int height = drawable.getIntrinsicHeight();Bitmap oldbmp = drawableToBitmap(drawable);Matrix matrix = new Matrix();float sx = ((float) w / width);float sy = ((float) h / height);matrix.postScale(sx, sy);Bitmap newbmp = Bitmap.createBitmap(oldbmp, 0, 0, width, height,matrix, true);return new BitmapDrawable(newbmp);}/*** Get images from SD card by path and the name of image* 得到存储的图片* @param photoName* @return*/public static Bitmap getPhotoFromSDCard(String path,String photoName){Bitmap photoBitmap = BitmapFactory.decodeFile(path + "/" +photoName +".png");if (photoBitmap == null) {return null;}else {return photoBitmap;}}/*** Check the SD card * 检测SD卡* @return*/public static boolean checkSDCardAvailable(){return android.os.Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED);}/*** Get image from SD card by path and the name of image* * @param fileName* @return*/public static boolean findPhotoFromSDCard(String path,String photoName){boolean flag = false;if (checkSDCardAvailable()) {File dir = new File(path);if (dir.exists()) {File folders = new File(path);File photoFile[] = folders.listFiles();for (int i = 0; i < photoFile.length; i++) {String fileName = photoFile[i].getName().split("\\.")[0];if (fileName.equals(photoName)) {flag = true;}}}else {flag = false;}}else {flag = false;}return flag;}/*** Save image to the SD card * 将图片bitmap图片存储到SD卡* @param photoBitmap* @param photoName* @param path*/public static void savePhotoToSDCard(Bitmap photoBitmap,String path,String photoName){if (checkSDCardAvailable()) {File dir = new File(path);if (!dir.exists()){dir.mkdirs();}File photoFile = new File(path , photoName + ".png");FileOutputStream fileOutputStream = null;try {fileOutputStream = new FileOutputStream(photoFile);if (photoBitmap != null) {if (photoBitmap.compress(Bitmap.CompressFormat.PNG, 100, fileOutputStream)) {fileOutputStream.flush();}}} catch (FileNotFoundException e) {photoFile.delete();e.printStackTrace();} catch (IOException e) {photoFile.delete();e.printStackTrace();} finally{try {fileOutputStream.close();} catch (IOException e) {e.printStackTrace();}}} }/*** Delete the image from SD card* 删除指定图片* @param context* @param path* file:///sdcard/temp.jpg*/public static void deleteAllPhoto(String path){if (checkSDCardAvailable()) {File folder = new File(path);File[] files = folder.listFiles();for (int i = 0; i < files.length; i++) {files[i].delete();}}}public static void deletePhotoAtPathAndName(String path,String fileName){if (checkSDCardAvailable()) {File folder = new File(path);File[] files = folder.listFiles();for (int i = 0; i < files.length; i++) {System.out.println(files[i].getName());if (files[i].getName().equals(fileName)) {files[i].delete();}}}}}
//SDCard信息查询 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/LinearLayout1"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"tools:context=".MainActivity" ><TextViewandroid:id="@+id/tv_TotalBlocks"android:layout_width="wrap_content"android:layout_height="wrap_content" /><TextViewandroid:id="@+id/tv_BlocSize"android:layout_width="wrap_content"android:layout_height="wrap_content" /><TextViewandroid:id="@+id/tv_AvailaBlock"android:layout_width="wrap_content"android:layout_height="wrap_content" /><TextViewandroid:id="@+id/tv_FreeBlock"android:layout_width="wrap_content"android:layout_height="wrap_content" /><TextViewandroid:id="@+id/tv_SDTotalSize"android:layout_width="wrap_content"android:layout_height="wrap_content" /><TextViewandroid:id="@+id/tv_SDFreeSize"android:layout_width="wrap_content"android:layout_height="wrap_content" /></LinearLayout>public class MainActivity extends Activity {private TextView mTvTotalBlocks; private TextView mTvBlocSize; private TextView mTvAvailaBlock; private TextView mTvFreeBlock; private TextView mTvSDTotalSize; private TextView mTvSDFreeSize; @Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();SDCardSizeTest();}private void findView() {mTvTotalBlocks = (TextView)findViewById(R.id.tv_TotalBlocks);mTvBlocSize = (TextView)findViewById(R.id.tv_BlocSize);mTvAvailaBlock = (TextView)findViewById(R.id.tv_AvailaBlock);mTvFreeBlock = (TextView)findViewById(R.id.tv_FreeBlock);mTvSDTotalSize = (TextView)findViewById(R.id.tv_SDTotalSize);mTvSDFreeSize = (TextView)findViewById(R.id.tv_SDFreeSize);}public void SDCardSizeTest() {String sDcString = android.os.Environment.getExternalStorageState();if (sDcString.equals(android.os.Environment.MEDIA_MOUNTED)) {File pathFile = android.os.Environment.getExternalStorageDirectory();android.os.StatFs statfs = new android.os.StatFs(pathFile.getPath());long nTotalBlocks = statfs.getBlockCount();mTvTotalBlocks.setText("SDCard上BLOCK总数: "+nTotalBlocks);long nBlocSize = statfs.getBlockSize();mTvBlocSize.setText("SDCard上每个bloc的SIZE:"+nBlocSize);long nAvailaBlock = statfs.getAvailableBlocks();mTvAvailaBlock.setText("可供程序使用的Block的数量 : " + nAvailaBlock);long nFreeBlock = statfs.getFreeBlocks();mTvFreeBlock.setText("剩下的所有Block的数量: " + nFreeBlock);long nSDTotalSize = nTotalBlocks * nBlocSize / 1024 / 1024;mTvSDTotalSize.setText("SDCard 总容量大小MB: " + nSDTotalSize +"MB");long nSDFreeSize = nAvailaBlock * nBlocSize / 1024 / 1024;mTvSDFreeSize.setText(" SDCard 剩余大小MB: " + nSDFreeSize +"MB");}}}
//图片旋转保存 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/LinearLayout1"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"tools:context=".MainActivity" ><ImageViewandroid:id="@+id/imageView"android:layout_width="wrap_content"android:layout_height="wrap_content" /><Buttonandroid:id="@+id/selectImageBtn"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="选择图片" /></LinearLayout>public class MainActivity extends Activity {private BitmapView bitmapView = null;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);bitmapView = new BitmapView(this);setContentView(bitmapView);}}public class BitmapView extends View {private Matrix matrix = null;public BitmapView(Context context) {super(context);}public void onDraw(Canvas canvas) {Resources res = getResources();Bitmap bmp = BitmapFactory.decodeResource(res, R.drawable.h);canvas.drawColor(Color.BLACK);canvas.drawBitmap(bmp, 0, 0, null);matrix = new Matrix();matrix.postRotate(30);Bitmap bitmap = Bitmap.createBitmap(bmp, 0, 50, bmp.getWidth(),bmp.getHeight() / 2, matrix, true);canvas.drawBitmap(bitmap, 0, 250, null);SaveBitmap(bitmap);}public void SaveBitmap(Bitmap bmp) {Bitmap bitmap = Bitmap.createBitmap(800, 600, Config.ARGB_8888);Canvas canvas = new Canvas(bitmap);Bitmap bmps = BitmapFactory.decodeResource(getResources(),R.drawable.playerbackground);canvas.drawBitmap(bmps, 0, 0, null);canvas.drawBitmap(bmp, 10, 100, null);canvas.save(Canvas.ALL_SAVE_FLAG);canvas.restore();File file = new File("/sdcard/wyl/");if (!file.exists())file.mkdirs();try {FileOutputStream fileOutputStream = new FileOutputStream(file.getPath() + "/wyl.jpg");bitmap.compress(Bitmap.CompressFormat.JPEG, 100, fileOutputStream);fileOutputStream.close();System.out.println("saveBmp is here");} catch (Exception e) {Log.e("error", "noSave");e.printStackTrace();}}}
//学生成绩管理系统 public class MainActivity extends TabActivity {private static final String QUERY_TAG = "查询TAG";private static final String INSERT_TAG = "添加TAG";private static final String UPDATE_TAG = "修改TAG";private static final String DELETE_TAG = "删除TAG";private TabHost mTabHost;private View mViews;private EditText mEditText_Name; private EditText mEditText_Number; private EditText mEditText_Score;private EditText mEditText_query;private Button mButton_query; private Button mButton_insert;private ListView query_ListView; private ListView insert_ListView; private SimpleCursorAdapter adapter;private MySqliteHelper database;private Cursor mCursor;private int _id;private Cursor mCursor_query;private String name, number, score;@SuppressWarnings("deprecation")@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);this.setTitle(getResources().getString(R.string.title));this.setTitleColor(Color.MAGENTA);mTabHost = this.getTabHost();mViews = LayoutInflater.from(this).inflate(R.layout.activity_main,mTabHost.getTabContentView(), true);this.findViewsAndSetListener();this.addTabs();database = new MySqliteHelper(this);showUiAdapter();}public void addTabs() {mTabHost.addTab(mTabHost.newTabSpec(QUERY_TAG).setContent(R.id.queryLayout_id).setIndicator(getResources().getString(R.string.query_str),getResources().getDrawable(R.drawable.query)));mTabHost.addTab(mTabHost.newTabSpec(INSERT_TAG).setContent(R.id.insertLayout_id).setIndicator(getResources().getString(R.string.insert_str),getResources().getDrawable(R.drawable.add)));mTabHost.addTab(mTabHost.newTabSpec(UPDATE_TAG).setContent(R.id.insertLayout_id).setIndicator(getResources().getString(R.string.update_str),getResources().getDrawable(R.drawable.refresh)));mTabHost.addTab(mTabHost.newTabSpec(DELETE_TAG).setContent(R.id.insertLayout_id).setIndicator(getResources().getString(R.string.delete_str),getResources().getDrawable(R.drawable.delete)));mTabHost.setCurrentTab(1);mTabHost.setOnTabChangedListener(new OnTabChangeListener() {public void onTabChanged(String tabId) {if (tabId.equalsIgnoreCase(MainActivity.INSERT_TAG)) {mEditText_Name.setEnabled(true);mEditText_Number.setEnabled(true);mEditText_Score.setEnabled(true);mButton_insert.setText(getResources().getString(R.string.insert_str));State.setSearch(false);State.setInsert(true);State.setDelete(false);setHintText();insert_ListView.setOnItemClickListener(myOnItemClickListener);} else if (tabId.equalsIgnoreCase(MainActivity.UPDATE_TAG)) {mEditText_Name.setEnabled(false);mEditText_Number.setEnabled(false);mEditText_Score.setEnabled(false);mButton_insert.setText(getResources().getString(R.string.update_str));State.setSearch(false);State.setInsert(false);State.setDelete(false);setHintEmptyText();insert_ListView.setOnItemClickListener(myOnItemClickListener);} else if (tabId.equalsIgnoreCase(MainActivity.DELETE_TAG)) {mEditText_Name.setEnabled(false);mEditText_Number.setEnabled(false);mEditText_Score.setEnabled(false);mButton_insert.setText(getResources().getString(R.string.delete_str));State.setSearch(false);State.setInsert(false);State.setDelete(true);setHintEmptyText();insert_ListView.setOnItemClickListener(myOnItemClickListener);} else {State.setSearch(true);State.setInsert(false);State.setDelete(false);mEditText_query.setHint(getResources().getString(R.string.query_edit_hint));}Toast.makeText(getApplicationContext(),"现在是>>" + tabId + "<<选项", Toast.LENGTH_SHORT).show();}});}public void findViewsAndSetListener() {EditText editTexts[] = {mEditText_Name = (EditText) this.findViewById(R.id.insert_editName_id),mEditText_Number = (EditText) this.findViewById(R.id.insert_editNumber_id),mEditText_Score = (EditText) this.findViewById(R.id.insert_editScore_id) };mEditText_query = (EditText) this.findViewById(R.id.query_edit_id);mButton_query = (Button) this.findViewById(R.id.query_button_id);mButton_insert = (Button) this.findViewById(R.id.insert_button_id);query_ListView = (ListView) this.findViewById(R.id.query_list_id);insert_ListView = (ListView) this.findViewById(R.id.insert_list_id);mButton_query.setOnClickListener(queryButton_OnClickListener);mButton_insert.setOnClickListener(insertButton_OnClickListener);for (int i = 0; i < editTexts.length; i++) {editTexts[i].setOnClickListener(listener);}mEditText_query.setOnClickListener(listener);mEditText_query.setOnKeyListener(keyListener);}OnKeyListener keyListener = new OnKeyListener() {public boolean onKey(View v, int keyCode, KeyEvent event) {if (!mEditText_query.getText().toString().equalsIgnoreCase("")) {mButton_query.setEnabled(true);} else {mButton_query.setEnabled(false);}return false;}};@SuppressWarnings("deprecation")public void showUiAdapter() {mCursor = database.searchAllData();if (State.isSearch()) {mCursor = mCursor_query;}if (mCursor != null && mCursor.getCount() >= 0) {adapter = new SimpleCursorAdapter(this, R.layout.list_item,mCursor, new String[] { MySqliteHelper.ID,MySqliteHelper.stuName, MySqliteHelper.stuNumber,MySqliteHelper.stuScore }, new int[] { R.id.id_id,R.id.name_id, R.id.number_id, R.id.score_id });if (State.isSearch()) {query_ListView.setAdapter(adapter);} else {insert_ListView.setAdapter(adapter);}} else {Toast.makeText(MainActivity.this, "没有信息！", Toast.LENGTH_SHORT).show();}}public void setHintEmptyText() {mEditText_Name.setHint("");mEditText_Number.setHint("");mEditText_Score.setHint("");}public void setHintText() {mEditText_Name.setHint(getResources().getString(R.string.insert_editName_hint));mEditText_Number.setHint(getResources().getString(R.string.insert_editNumber_hint));mEditText_Score.setHint(getResources().getString(R.string.insert_editScore_hint));}OnClickListener queryButton_OnClickListener = new OnClickListener() {public void onClick(View v) {searchSpecificStuMethod();}};OnClickListener insertButton_OnClickListener = new OnClickListener() {public void onClick(View v) {if (mButton_insert.getText().equals(getResources().getString(R.string.insert_str))) {insertMethod();} else if (mButton_insert.getText().equals(getResources().getString(R.string.update_str))) {upDateMethod();} else if (mButton_insert.getText().equals(getResources().getString(R.string.delete_str))) {deleteDataMethod();}}};OnClickListener listener = new OnClickListener() {public void onClick(View v) {switch (v.getId()) {case R.id.insert_editName_id:mEditText_Name.setHint("");break;case R.id.insert_editNumber_id:mEditText_Number.setHint("");break;case R.id.insert_editScore_id:mEditText_Score.setHint("");break;case R.id.query_edit_id:mEditText_query.setHint("");break;default:break;}}};OnItemClickListener myOnItemClickListener = new OnItemClickListener() {public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,long arg3) {if (State.isDelete()) {mEditText_Name.setEnabled(false);mEditText_Number.setEnabled(false);mEditText_Score.setEnabled(false);} else {mEditText_Name.setEnabled(true);mEditText_Number.setEnabled(true);mEditText_Score.setEnabled(true);}mCursor.moveToPosition(arg2);_id = mCursor.getInt(mCursor.getColumnIndex(MySqliteHelper.ID));mEditText_Name.setText(mCursor.getString(mCursor.getColumnIndex(MySqliteHelper.stuName)));mEditText_Number.setText(mCursor.getString(mCursor.getColumnIndex(MySqliteHelper.stuNumber)));mEditText_Score.setText(mCursor.getString(mCursor.getColumnIndex(MySqliteHelper.stuScore)));}};public void insertMethod() {State.setInsert(true);if (isValid()) {Cursor c = database.isHaveThisStu(Integer.valueOf(number));if (c.getCount() > 0 && c != null) {Toast.makeText(this,getResources().getString(R.string.haveNumber), 1000).show();} else {database.insertData(name, Integer.valueOf(number),Float.valueOf(score));update();}}}public void update() {_id = 0;mEditText_Name.setText("");mEditText_Number.setText("");mEditText_Score.setText("");if (State.isUpdataOrDelete()) {setHintEmptyText();} else {setHintText();}mCursor.requery();adapter.notifyDataSetChanged();Log.i("//", "" + State.isInsert());if (State.isInsert()) {mEditText_Name.setEnabled(true);mEditText_Number.setEnabled(true);mEditText_Score.setEnabled(true);} else {mEditText_Name.setEnabled(false);mEditText_Number.setEnabled(false);mEditText_Score.setEnabled(false);}}public void searchSpecificStuMethod() {State.setSearch(true);String number = mEditText_query.getText().toString().trim();if (number.equalsIgnoreCase("")) {return;}mCursor_query = database.searchSpecific(Integer.valueOf(number));if (mCursor_query.getCount() > 0) {showUiAdapter();} else {Toast.makeText(this, getResources().getString(R.string.noinfo),Toast.LENGTH_SHORT).show();}mEditText_query.setHint(getResources().getString(R.string.query_edit_hint));}public boolean isValid() {name = null;number = null;score = null;name = mEditText_Name.getText().toString().trim();number = mEditText_Number.getText().toString().trim();score = mEditText_Score.getText().toString().trim();if (name.equalsIgnoreCase("") || number.equalsIgnoreCase("")|| score.equalsIgnoreCase("")) {Toast.makeText(MainActivity.this, "输入有误,请核对！", Toast.LENGTH_SHORT).show();return false;} else {return true;}}public void upDateMethod() {State.setUpdataOrDelete(true);if (isValid()) {database.upDateinfo(_id, name, Integer.valueOf(number),Float.valueOf(score));}update();}public void deleteDataMethod() {State.setUpdataOrDelete(true);if (isValid()) {database.deleteStuInfo(_id);}update();mEditText_Name.setEnabled(false);mEditText_Number.setEnabled(false);mEditText_Score.setEnabled(false);}@Overridepublic boolean onKeyDown(int keyCode, KeyEvent event) {if (keyCode == KeyEvent.KEYCODE_BACK) {// 退出键this.exitDailog();}return super.onKeyDown(keyCode, event);}public void exitDailog() {new AlertDialog.Builder(this).setTitle(getResources().getString(R.string.dialog_title)).setMessage(getResources().getString(R.string.app_exit)).setPositiveButton(getResources().getString(R.string.ok),new DialogInterface.OnClickListener() {public void onClick(DialogInterface dialog,int which) {dialog.dismiss();database.close();finish();}}).setNegativeButton(getResources().getString(R.string.cancle),new DialogInterface.OnClickListener() {public void onClick(DialogInterface dialog,int which) {dialog.dismiss();}}).show();}}public class MySqliteHelper extends SQLiteOpenHelper {private static final String DATABASE_NAME = "stu_db";// 数据库的名字private static final int DATABASEVERSION = 1;// 版本号private static final String TABLE_NAME = "stu_table";// 表名private SQLiteDatabase db;// 数据库private static final String TAG = "MyDataBase";// 4个字段public static final String ID = "_id";public static final String stuName = "stu_name";public static final String stuNumber = "stu_number";public static final String stuScore = "stu_score";public MySqliteHelper(Context context) {// TODO Auto-generated constructor stubsuper(context, DATABASE_NAME, null, DATABASEVERSION);// 打开或新建数据库(第一次时创建)获得SQLiteDatabase对象，为了读取和写入数据db = this.getWritableDatabase();}@Overridepublic void onCreate(SQLiteDatabase db) {// TODO Auto-generated method stubLog.i(TAG, "onCreate()");// 创建表的sql语句String sql = "CREATE TABLE " + TABLE_NAME + " (" + ID+ " INTEGER PRIMARY KEY AUTOINCREMENT," + stuName + " TEXT,"+ stuNumber + " INTEGER," + stuScore + " FLOAT)";db.execSQL(sql);}//更新数据库@Overridepublic void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {// TODO Auto-generated method stubLog.i(TAG, " onUpgrade() ");// 删除表的SQLString sql = "DROP TABLE IF EXITS " + TABLE_NAME;db.execSQL(sql);onCreate(db);}//关闭数据库@Overridepublic synchronized void close() {// TODO Auto-generated method stubLog.i(TAG, "close()");//关闭数据库db.close();super.close();}// 查询所有的数据 ，返回Cursor对象(按照id的升序排列)public Cursor searchAllData(){Log.i(TAG, " searchAllData()");//数据查询//asc是升序desc为降序（默认为asc）return db.query(TABLE_NAME, null, null, null, null, null,MySqliteHelper.ID+" ASC" );}//插入数据public void insertData(String name,int number,float score ){//在数据库中插入记录ContentValues values=new ContentValues();values.put(MySqliteHelper.stuName, name);values.put(MySqliteHelper.stuNumber, number);values.put(MySqliteHelper.stuScore, score);long row=db.insert(TABLE_NAME, null, values);Log.i(TAG, "insertData row="+row);}//查询指定的信息public Cursor searchSpecific(int number){//按条件查询String[] columns={MySqliteHelper.ID,MySqliteHelper.stuName,MySqliteHelper.stuNumber,MySqliteHelper.stuScore};Cursor cur=db.query(TABLE_NAME, columns, MySqliteHelper.stuNumber+"="+number, null, null, null, null);Log.i("searchSpecific()", " cur.getCount()="+cur.getCount());return cur;}//修改数据public void upDateinfo(int id ,String name,int number,float score ){//修改数据库中的某条记录ContentValues values=new ContentValues();values.put(MySqliteHelper.stuName, name);values.put(MySqliteHelper.stuNumber, number);values.put(MySqliteHelper.stuScore, score);String whereClause=MySqliteHelper.ID+" = ? ";String whereArgs[]={Integer.toString(id)};int rowaffected =db.update(TABLE_NAME, values, whereClause, whereArgs);Log.i(TAG, "upDateinfo() rowaffected="+rowaffected);}//删除数据public void deleteStuInfo(int id){int rowaffected =db.delete(TABLE_NAME, MySqliteHelper.ID+"="+id, null);Log.i(TAG, "deleteStuInfo() rowaffected="+rowaffected);}//判断是否存在改学生的信息public Cursor isHaveThisStu(int number){String[] columns={MySqliteHelper.ID,MySqliteHelper.stuName,MySqliteHelper.stuNumber,MySqliteHelper.stuScore};Cursor cur=db.query(TABLE_NAME, columns, MySqliteHelper.stuNumber+"="+number, null, null, null, null);Log.i("isHaveThisStu()", " cur.getCount()="+cur.getCount());return cur;}}public class State {public static boolean isSearch = false;public static boolean isInsert = false;public static boolean isUpdataOrDelete = false;public static boolean isDelete = false;public static boolean isSearch() {return isSearch;}public static void setSearch(boolean isSearch) {State.isSearch = isSearch;}public static boolean isInsert() {return isInsert;}public static void setInsert(boolean isInsert) {State.isInsert = isInsert;}public static boolean isUpdataOrDelete() {return isUpdataOrDelete;}public static void setUpdataOrDelete(boolean isUpdataOrDelete) {State.isUpdataOrDelete = isUpdataOrDelete;}public static boolean isDelete() {return isDelete;}public static void setDelete(boolean isDelete) {State.isDelete = isDelete;}}<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent" ><TextViewandroid:id="@+id/id_id"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentLeft="true"android:textSize="17sp" /><TextViewandroid:id="@+id/name_id"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginLeft="60sp"android:layout_toRightOf="@+id/id_id"android:textSize="15sp" /><TextViewandroid:id="@+id/number_id"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginLeft="180sp"android:textSize="15sp" /><TextViewandroid:id="@+id/score_id"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentRight="true"android:layout_marginRight="20sp"android:textSize="17sp" /></RelativeLayout><FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent" ><RelativeLayoutandroid:id="@+id/queryLayout_id"android:layout_width="match_parent"android:layout_height="match_parent" ><TextViewandroid:id="@+id/query_id"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentLeft="true"android:layout_marginTop="25sp"android:text="@string/str_id"android:textSize="20sp" /><EditTextandroid:id="@+id/query_edit_id"android:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_alignBaseline="@+id/query_id"android:layout_toRightOf="@+id/query_id"android:hint="@string/query_edit_hint"android:inputType="number"android:lines="1"android:singleLine="true"android:textColor="@drawable/blue" /><Buttonandroid:id="@+id/query_button_id"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentRight="true"android:layout_below="@+id/query_edit_id"android:layout_marginTop="30sp"android:enabled="false"android:text="@string/str_query_button" /><RelativeLayoutandroid:id="@+id/layoutColumn_id"android:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_below="@+id/query_button_id" ><TextViewandroid:id="@+id/textView1_id"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentLeft="true"android:text="@string/text1"android:textSize="20sp" /><TextViewandroid:id="@+id/textView2_id"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginLeft="80sp"android:layout_toRightOf="@+id/textView1_id"android:text="@string/text2"android:textSize="20sp" /><TextViewandroid:id="@+id/textView3_id"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginLeft="180sp"android:text="@string/text3"android:textSize="20sp" /><TextViewandroid:id="@+id/textView4_id"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentRight="true"android:layout_marginRight="20sp"android:text="@string/text4"android:textSize="20sp" /></RelativeLayout><ListViewandroid:id="@+id/query_list_id"android:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_below="@+id/layoutColumn_id"android:choiceMode="singleChoice" ></ListView></RelativeLayout><RelativeLayoutandroid:id="@+id/insertLayout_id"android:layout_width="match_parent"android:layout_height="match_parent" ><TextViewandroid:id="@+id/insert_textView1_id"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentLeft="true"android:layout_marginTop="25sp"android:text="@string/insert_text1"android:textSize="20sp" /><EditTextandroid:id="@+id/insert_editName_id"android:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_alignBaseline="@+id/insert_textView1_id"android:layout_marginTop="22sp"android:layout_toRightOf="@+id/insert_textView1_id"android:hint="@string/insert_editName_hint"android:inputType="text"android:lines="1"android:singleLine="true" /><TextViewandroid:id="@+id/insert_textView2_id"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentLeft="true"android:layout_below="@+id/insert_editName_id"android:text="@string/insert_text2"android:textSize="20sp" /><EditTextandroid:id="@+id/insert_editNumber_id"android:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_alignBaseline="@+id/insert_textView2_id"android:layout_below="@+id/insert_editName_id"android:layout_toRightOf="@+id/insert_textView2_id"android:hint="@string/insert_editNumber_hint"android:inputType="number"android:lines="1"android:singleLine="true" /><TextViewandroid:id="@+id/insert_textView3_id"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentLeft="true"android:layout_below="@+id/insert_editNumber_id"android:text="@string/insert_text3"android:textSize="20sp" /><EditTextandroid:id="@+id/insert_editScore_id"android:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_alignBaseline="@+id/insert_textView3_id"android:layout_below="@+id/insert_editNumber_id"android:layout_toRightOf="@+id/insert_textView3_id"android:hint="@string/insert_editScore_hint"android:inputType="numberDecimal"android:lines="1"android:singleLine="true" /><Buttonandroid:id="@+id/insert_button_id"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentRight="true"android:layout_below="@+id/insert_editScore_id"android:text="@string/insert_str" /><RelativeLayoutandroid:id="@+id/insert_layoutColumn_id"android:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_below="@+id/insert_button_id" ><TextViewandroid:id="@+id/insert_textView01_id"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentLeft="true"android:text="@string/text1"android:textSize="20sp" /><TextViewandroid:id="@+id/insert_textView02_id"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginLeft="60sp"android:layout_toRightOf="@+id/insert_textView01_id"android:text="@string/text2"android:textSize="20sp" /><TextViewandroid:id="@+id/insert_textView03_id"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginLeft="180sp"android:text="@string/text3"android:textSize="20sp" /><TextViewandroid:id="@+id/insert_textView04_id"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentRight="true"android:layout_marginRight="20sp"android:text="@string/text4"android:textSize="20sp" /></RelativeLayout><ListViewandroid:id="@+id/insert_list_id"android:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_below="@+id/insert_layoutColumn_id"android:choiceMode="singleChoice" ></ListView></RelativeLayout></FrameLayout><resources><string name="app_name">Example06_06</string><string name="action_settings">Settings</string><string name="title">学生成绩管理系统</string><string name="hello_world">Hello world!</string><string name="menu_about">关于本程序</string><string name="title_activity_sqlite_demo">SQliteDemo</string><string name="str_id">学号：</string><string name="query_edit_hint">请输入学生学号</string><string name="str_query_button">查询</string><string name="query_str">查询</string><string name="insert_str">添加</string><string name="update_str">修改</string><string name="delete_str">删除</string><string name="text1">ID</string><string name="text2">姓名</string><string name="text3">学号</string><string name="text4">成绩</string><string name="insert_text1">姓名:</string><string name="insert_text2">学号:</string><string name="insert_text3">成绩:</string><string name="insert_editName_hint">请输入学生姓名</string><string name="insert_editNumber_hint">请输入学生学号</string><string name="insert_editScore_hint">请输入学生成绩</string><string name="noinfo">没有该学生的信息</string><string name="haveNumber">已经存在该学号,请重新输入！</string><string name="dialog_title">温馨提示</string><string name="ok">确定</string><string name="cancle">取消</string><string name="app_exit">你确定退出吗？</string></resources>
Android中的ContentProvider
//音乐播放器 public class MainActivity extends Activity implements OnClickListener {private Button mBtnPrevious; private Button mBtnPlay; private Button mBtnNext; private Button mBtnPause;private ComponentName component; public void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void findView() {component = new ComponentName(this, MusicService.class);mBtnPrevious = (Button) findViewById(R.id.previous);mBtnPlay = (Button) findViewById(R.id.play);mBtnNext = (Button) findViewById(R.id.next);mBtnPause = (Button) findViewById(R.id.pause);}private void setListener() {mBtnPrevious.setOnClickListener(this);mBtnPlay.setOnClickListener(this);mBtnNext.setOnClickListener(this);mBtnPause.setOnClickListener(this);}public void onClick(View v) {if (v == mBtnPrevious) {Intent mIntent = new Intent(MusicService.PREVIOUS_ACTION);mIntent.setComponent(component);startService(mIntent);} else if (v == mBtnPlay) {Intent mIntent = new Intent(MusicService.PLAY_ACTION);mIntent.setComponent(component);startService(mIntent);} else if (v == mBtnNext) {Intent mIntent = new Intent(MusicService.NEXT_ACTION);mIntent.setComponent(component);startService(mIntent);} else {Intent mIntent = new Intent(MusicService.PAUSE_ACTION);mIntent.setComponent(component);startService(mIntent);}}}public class MusicService extends Service {String[] mCursorCols = new String[] {"audio._id AS _id",MediaStore.Audio.Media.ARTIST, MediaStore.Audio.Media.ALBUM,MediaStore.Audio.Media.TITLE, MediaStore.Audio.Media.DATA,MediaStore.Audio.Media.MIME_TYPE, MediaStore.Audio.Media.ALBUM_ID,MediaStore.Audio.Media.ARTIST_ID, MediaStore.Audio.Media.DURATION };private MediaPlayer mMediaPlayer; private Cursor mCursor; private int mPlayPosition = 0;public static final String PLAY_ACTION = "com.wyl.music.PLAY_ACTION";public static final String PAUSE_ACTION = "com.wyl.music.PAUSE_ACTION";public static final String NEXT_ACTION = "com.wyl.music.NEXT_ACTION";public static final String PREVIOUS_ACTION = "com.wyl.music.PREVIOUS_ACTION";@Overridepublic IBinder onBind(Intent arg0) {return null;}@Overridepublic void onCreate() {super.onCreate();mMediaPlayer = new MediaPlayer();Uri MUSIC_URL = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;mCursor = getContentResolver().query(MUSIC_URL, mCursorCols,"duration > 10000", null, null);}@Overridepublic void onStart(Intent intent, int startId) {super.onStart(intent, startId);String action = intent.getAction();if (action.equals(PLAY_ACTION)) {play();} else if (action.equals(PAUSE_ACTION)) {pause();} else if (action.equals(NEXT_ACTION)) {next();} else if (action.equals(PREVIOUS_ACTION)) {previous();}}public void play() {inite();}public void pause() {stopSelf();}public void previous() {if (mPlayPosition == 0) {mPlayPosition = mCursor.getCount() - 1;} else {mPlayPosition--;}inite();}public void next() {if (mPlayPosition == mCursor.getCount() - 1) {mPlayPosition = 0;} else {mPlayPosition++;}inite();}public void inite() {mMediaPlayer.reset();String dataSource = getDateByPosition(mCursor, mPlayPosition);String info = getInfoByPosition(mCursor, mPlayPosition);Toast.makeText(getApplicationContext(), info, Toast.LENGTH_SHORT).show();try {mMediaPlayer.setDataSource(dataSource);mMediaPlayer.prepare();mMediaPlayer.start();} catch (IllegalArgumentException e1) {e1.printStackTrace();} catch (IllegalStateException e1) {e1.printStackTrace();} catch (IOException e1) {e1.printStackTrace();}}public String getDateByPosition(Cursor c, int position) {c.moveToPosition(position);int dataColumn = c.getColumnIndex(MediaStore.Audio.Media.DATA);String data = c.getString(dataColumn);return data;}public String getInfoByPosition(Cursor c, int position) {c.moveToPosition(position);int titleColumn = c.getColumnIndex(MediaStore.Audio.Media.TITLE);int artistColumn = c.getColumnIndex(MediaStore.Audio.Media.ARTIST);String info = c.getString(artistColumn) + " "+ c.getString(titleColumn);return info;}public void onDestroy() {super.onDestroy();mMediaPlayer.release();}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextViewandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:text="wyl music player" /><LinearLayoutandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:orientation="horizontal" ><Buttonandroid:id="@+id/previous"android:layout_width="wrap_content"android:layout_height="fill_parent"android:layout_weight="1"android:text="上一首" /><Buttonandroid:id="@+id/play"android:layout_width="wrap_content"android:layout_height="fill_parent"android:layout_weight="1"android:text="播放" /><Buttonandroid:id="@+id/next"android:layout_width="wrap_content"android:layout_height="fill_parent"android:layout_weight="1"android:text="下一首" /><Buttonandroid:id="@+id/pause"android:layout_width="wrap_content"android:layout_height="fill_parent"android:layout_weight="1"android:text="暂停" /></LinearLayout></LinearLayout>
//系统图片选择预览 public class MainActivity extends Activity {private static int RESULT_LOAD_IMAGE = 1;private Button BtnLoadImage;private ImageView IvLoadImage;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void findView() {BtnLoadImage = (Button) findViewById(R.id.buttonLoadPicture);IvLoadImage = (ImageView) findViewById(R.id.imgView);}private void setListener() {BtnLoadImage.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View arg0) {Intent i = new Intent(Intent.ACTION_PICK,android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);startActivityForResult(i, RESULT_LOAD_IMAGE);}});}@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {super.onActivityResult(requestCode, resultCode, data);if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK&& null != data) {Uri selectedImage = data.getData();String[] filePathColumn = { MediaStore.Images.Media.DATA };Cursor cursor = getContentResolver().query(selectedImage,filePathColumn, null, null, null);cursor.moveToFirst();int columnIndex = cursor.getColumnIndex(filePathColumn[0]);String picturePath = cursor.getString(columnIndex);cursor.close();IvLoadImage.setImageBitmap(BitmapFactory.decodeFile(picturePath));}}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><ImageViewandroid:id="@+id/imgView"android:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_weight="1" ></ImageView><Buttonandroid:id="@+id/buttonLoadPicture"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_gravity="center"android:layout_weight="0"android:text="选择图片" ></Button></LinearLayout>
//系统的联系人 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/RelativeLayout1"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"tools:context=".MainActivity" ><ListViewandroid:id="@+id/Lv_show"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_alignParentLeft="true"android:layout_alignParentTop="true"android:visibility="gone" ></ListView><LinearLayoutandroid:id="@+id/Llay_progressBar"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentBottom="true"android:layout_centerHorizontal="true" ><ProgressBarandroid:id="@+id/progressBar1"android:layout_width="wrap_content"android:layout_height="wrap_content" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:paddingTop="20dp"android:text="加载中..." /></LinearLayout></RelativeLayout>public class MainActivity extends Activity {private static final String TAG = "MainActivity";private List<String> data = new ArrayList<String>();private ListView mLvShow; private LinearLayout mLlay_progressBar; Handler mHandler = new Handler() {public void handleMessage(Message msg) {mLlay_progressBar.setVisibility(View.GONE);mLvShow.setAdapter(new ArrayAdapter<String>(MainActivity.this,android.R.layout.simple_list_item_1, data));mLvShow.setVisibility(View.VISIBLE);}};@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();new Thread(new myRunnable()).start();}private void findView() {mLvShow = (ListView) findViewById(R.id.Lv_show);mLlay_progressBar = (LinearLayout) findViewById(R.id.Llay_progressBar);mLlay_progressBar.setVisibility(View.VISIBLE);}private void getContacts() {ContentResolver cr = this.getContentResolver();Cursor cursor = cr.query(ContactsContract.Contacts.CONTENT_URI, null,null, null, null);while (cursor.moveToNext()) {StringBuilder sbLog = new StringBuilder();int nameIndex = cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME);String name = cursor.getString(nameIndex);sbLog.append(name + ":");String contactId = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts._ID));Cursor phoneNumbers = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = "+ contactId, null, null);while (phoneNumbers.moveToNext()) {String strPhoneNumber = phoneNumbers.getString(phoneNumbers.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));sbLog.append(strPhoneNumber + ";");}phoneNumbers.close();Cursor emails = cr.query(ContactsContract.CommonDataKinds.Email.CONTENT_URI, null,ContactsContract.CommonDataKinds.Email.CONTACT_ID + " = "+ contactId, null, null);while (emails.moveToNext()) {String strEmail = emails.getString(emails.getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA));sbLog.append("Email=" + strEmail + ";");}emails.close();Log.e(TAG, sbLog.toString());data.add(sbLog.toString());}cursor.close();}class myRunnable implements Runnable {public void run() {Message message = new Message();getContacts();mHandler.sendMessage(message);}}}
//得到系统的音频文件 public class MainActivity extends Activity {private ListView mLvShow;private LinearLayout mLlay_progressBar; private List<String> data = new ArrayList<String>(); Handler mHandler = new Handler() {public void handleMessage(Message msg) {mLlay_progressBar.setVisibility(View.GONE);mLvShow.setAdapter(new ArrayAdapter<String>(MainActivity.this,android.R.layout.simple_list_item_1, data));mLvShow.setVisibility(View.VISIBLE);}};@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();new Thread(new myRunnable()).start();}private void findView() {mLvShow = (ListView) findViewById(R.id.Lv_show);mLlay_progressBar = (LinearLayout) findViewById(R.id.Llay_progressBar);mLlay_progressBar.setVisibility(View.VISIBLE);}private void getData() {ContentResolver cr = getContentResolver();Uri AUDIO_URI = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;String[] columns = new String[] { MediaStore.Audio.Media.TITLE,MediaStore.Audio.Media.DATA };Cursor cursor = cr.query(AUDIO_URI, columns,MediaStore.Audio.Media.DURATION + ">?",new String[] { "1000" }, null);Log.e("cursor", cursor.getCount()+"");while (cursor.moveToNext()) {Log.e("ContentProvider的使用 读取手机内音频 视频 图片文件", cursor.getString(1));data.add(cursor.getString(1));}cursor.close();}class myRunnable implements Runnable {public void run() {Message message = new Message();getData();mHandler.sendMessage(message);}}}<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/RelativeLayout1"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"tools:context=".MainActivity" ><ListViewandroid:id="@+id/Lv_show"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_alignParentLeft="true"android:layout_alignParentTop="true"android:visibility="gone" ></ListView><LinearLayoutandroid:id="@+id/Llay_progressBar"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_centerInParent="true" ><ProgressBarandroid:id="@+id/progressBar"style="?android:attr/progressBarStyleLarge"android:layout_width="wrap_content"android:layout_height="wrap_content" /></LinearLayout></RelativeLayout>
Android中的资源文件
//全屏界面 public class MainActivity extends Activity {@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);requestWindowFeature(Window.FEATURE_NO_TITLE);getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);setContentView(R.layout.activity_main);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/LinearLayout1"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"tools:context=".MainActivity" ><TextView android:text="我是全屏效果"android:gravity="center"android:layout_width="match_parent"android:layout_height="match_parent"android:textSize="30sp"/></LinearLayout>
//小图堆积背景 public class MainActivity extends Activity {@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:id="@+id/MainLayout"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical"android:background="@drawable/backrepeat"></LinearLayout>
//自定义EditText样式 public class MainActivity extends Activity {@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/LinearLayout1"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"tools:context=".MainActivity" ><EditTextandroid:id="@+id/et1"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="默认样式" ></EditText><EditTextandroid:id="@+id/et2"style="@style/et1"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="自定义样式一" ></EditText><EditTextandroid:id="@+id/et3"style="@style/et2"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="自定义样式二" ></EditText></LinearLayout>
//透明背景的Activity public class MainActivity extends Activity {@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/LinearLayout1"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"tools:context=".MainActivity" ><TextView android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="在Manifest中设置Activity theme 为Theme.Translucent使Activity背景透明"android:textSize="20sp"android:textColor="@android:color/widget_edittext_dark"/></LinearLayout>
//圆角控件的制作 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/LinearLayout1"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"tools:context=".MainActivity" ><ListView android:layout_margin="10dp"android:id="@+id/lv_show"android:layout_width="match_parent"android:layout_height="wrap_content"android:background="@drawable/list_bg"></ListView></LinearLayout>public class MainActivity extends Activity {private ListView mLvShow;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();}private void findView() {mLvShow = (ListView) findViewById(R.id.lv_show);mLvShow.setAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_expandable_list_item_1, getData()));}private List<String> getData() {List<String> data = new ArrayList<String>();data.add("圆角背景测试数据1");data.add("圆角背景测试数据2");data.add("圆角背景测试数据3");data.add("圆角背景测试数据4");return data;}}
//程序的国际化 public class MainActivity extends Activity {@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);Button b;b = (Button) findViewById(R.id.flag_button);AlertDialog.Builder builder = new AlertDialog.Builder(this);builder.setMessage(R.string.dialog_text).setCancelable(false).setTitle(R.string.dialog_title).setPositiveButton(R.string.dialog_ok,new DialogInterface.OnClickListener() {public void onClick(DialogInterface dialog, int id) {dialog.dismiss();}});final AlertDialog alert = builder.create();b.setOnClickListener(new View.OnClickListener() {public void onClick(View v) {alert.show();}});}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextViewandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:gravity="center_horizontal"android:textSize="30sp"android:text="@string/text_a" /><TextViewandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:gravity="center_horizontal"android:textSize="30sp"android:text="@string/text_b" /><Buttonandroid:id="@+id/flag_button"android:layout_width="fill_parent"android:layout_height="wrap_content"android:textSize="30sp"android:layout_gravity="center" android:text="@string/btn_text"/></LinearLayout><resources><string name="app_name">Example06_16</string><string name="action_settings">Settings</string><string name="hello_world">Hello world!</string><string name="text_a">周傑倫</string><string name="text_b">劉德華</string><string name="dialog_ok">確定</string><string name="dialog_title">上傳對話框</string><string name="dialog_text">數據已上傳成功</string><string name="btn_text">上傳</string></resources>
Android中的服务和广播
Android中的服务的使用
//查看手机运行的进程列表 public class MainActivity extends Activity {private Button btnEnableMember;private Button btnLookRuningMemory;private ActivityManager mActivityManager;private TextView tvText;private ListView listviewProcess;private ArrayList<ProcessInfo> processInfoList;private TextView tvCurrentProcessNum;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();mActivityManager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);}private void setListener() {btnEnableMember.setOnClickListener(listener);btnLookRuningMemory.setOnClickListener(listener);}private void findView() {btnEnableMember = (Button) findViewById(R.id.btn_main_ablememory);btnLookRuningMemory = (Button) findViewById(R.id.btn_main_lookruningmemory);tvText = (TextView) findViewById(R.id.tv_main_text);listviewProcess = (ListView) findViewById(R.id.lv_main_list);tvCurrentProcessNum = (TextView) findViewById(R.id.tv_main_currentprocessnum);}OnClickListener listener = new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btn_main_ablememory:String availMemStr = getSystemAvaialbeMemorySize();tvText.setText(availMemStr);tvText.setVisibility(View.VISIBLE);listviewProcess.setVisibility(View.GONE);break;case R.id.btn_main_lookruningmemory:tvText.setVisibility(View.GONE);listviewProcess.setVisibility(View.VISIBLE);getRunningAppProcessInfo();setAdapter();break;default:break;}}};protected String getSystemAvaialbeMemorySize() {MemoryInfo memoryInfo = new MemoryInfo();mActivityManager.getMemoryInfo(memoryInfo);long memSize = memoryInfo.availMem;String availMemStr = formateFileSize(memSize);return availMemStr;}private String formateFileSize(long size) {return Formatter.formatFileSize(MainActivity.this, size);}protected void setAdapter() {ProcessInfoAdapter mprocessInfoAdapter = new ProcessInfoAdapter(this,processInfoList);listviewProcess.setAdapter(mprocessInfoAdapter);}private void getRunningAppProcessInfo() {processInfoList = new ArrayList<ProcessInfo>();List<ActivityManager.RunningAppProcessInfo> appProcessList = mActivityManager.getRunningAppProcesses();for (ActivityManager.RunningAppProcessInfo appProcessInfo : appProcessList) {int pid = appProcessInfo.pid;int uid = appProcessInfo.uid;String processName = appProcessInfo.processName;int[] myMempid = new int[] { pid };Debug.MemoryInfo[] memoryInfo = mActivityManager.getProcessMemoryInfo(myMempid);int memSize = memoryInfo[0].dalvikPrivateDirty;ProcessInfo processInfo = new ProcessInfo();processInfo.setPid(pid);processInfo.setUid(uid);processInfo.setMemSize(memSize);processInfo.setProcessName(processName);processInfoList.add(processInfo);}tvCurrentProcessNum.setText("当前系统进程共有：" + processInfoList.size());}}public class ProcessInfo {private int pid; private int uid;private int memSize;private String processName;public ProcessInfo(){}public int getPid() {return pid;}public void setPid(int pid) {this.pid = pid;}public int getUid() {return uid;}public void setUid(int uid) {this.uid = uid;}public int getMemSize() {return memSize;}public void setMemSize(int memSize) {this.memSize = memSize;}public String getProcessName() {return processName;}public void setProcessName(String processName) {this.processName = processName;}}public class ProcessInfoAdapter extends BaseAdapter {private List<ProcessInfo> mlistProcessInfo = null;LayoutInflater infater = null;public ProcessInfoAdapter(Context context, List<ProcessInfo> apps) {infater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);mlistProcessInfo = apps;}@Overridepublic int getCount() {System.out.println("size" + mlistProcessInfo.size());return mlistProcessInfo.size();}@Overridepublic Object getItem(int position) {return mlistProcessInfo.get(position);}@Overridepublic long getItemId(int position) {return 0;}@Overridepublic View getView(int position, View convertview, ViewGroup arg2) {View view = null;ViewHolder holder = null;if (convertview == null || convertview.getTag() == null) {view = infater.inflate(R.layout.browse_process_item, null);holder = new ViewHolder(view);view.setTag(holder);} else {view = convertview;holder = (ViewHolder) convertview.getTag();}ProcessInfo processInfo = (ProcessInfo) getItem(position);holder.tvPID.setText(processInfo.getPid() + "");holder.tvUID.setText(processInfo.getUid() + "");holder.tvProcessMemSize.setText(processInfo.getMemSize() + "KB");holder.tvProcessName.setText(processInfo.getProcessName());return view;}class ViewHolder {TextView tvPID; TextView tvUID; TextView tvProcessMemSize;TextView tvProcessName; public ViewHolder(View view) {this.tvPID = (TextView) view.findViewById(R.id.tvProcessPID);this.tvUID = (TextView) view.findViewById(R.id.tvProcessUID);this.tvProcessMemSize = (TextView) view.findViewById(R.id.tvProcessMemSize);this.tvProcessName = (TextView) view.findViewById(R.id.tvProcessName);}}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Button android:id="@+id/btn_main_ablememory"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="可用 的内存"/><Button android:id="@+id/btn_main_lookruningmemory"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="查看正在运行的进程"/><TextViewandroid:id="@+id/tv_main_currentprocessnum"android:layout_width="fill_parent"android:layout_height="wrap_content" /><ListView android:id="@+id/lv_main_list"android:layout_width="fill_parent"android:layout_height="wrap_content"/><TextViewandroid:id="@+id/tv_main_text"android:layout_width="wrap_content"android:layout_height="wrap_content" /></LinearLayout><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent" android:layout_height="80dip" android:orientation="vertical"><LinearLayout android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginLeft="10dip"android:orientation="horizontal"><TextView android:layout_width="100dip"android:layout_height="wrap_content" android:text="进程ID : "></TextView><TextView android:id="@+id/tvProcessPID"android:layout_width="wrap_content" android:layout_height="wrap_content"android:layout_marginLeft="3dip" android:textColor="#FFD700"></TextView></LinearLayout><LinearLayout android:layout_width="fill_parent"android:layout_height="wrap_content" android:layout_marginLeft="10dip"android:orientation="horizontal"><TextView android:layout_width="100dip"android:layout_height="wrap_content" android:text="进程所在UID:"></TextView><TextView android:id="@+id/tvProcessUID"android:layout_width="wrap_content" android:layout_height="wrap_content"android:textColor="#FFD700"></TextView></LinearLayout><LinearLayout android:layout_width="fill_parent"android:layout_height="wrap_content" android:layout_marginLeft="10dip"android:orientation="horizontal"><TextView android:layout_width="100dip"android:layout_height="wrap_content" android:text="进程占用内存:"></TextView><TextView android:id="@+id/tvProcessMemSize"android:layout_width="wrap_content" android:layout_height="wrap_content"android:textColor="#FFD700"></TextView></LinearLayout><LinearLayout android:layout_width="fill_parent"android:layout_height="wrap_content" android:layout_marginLeft="10dip"android:orientation="horizontal"><TextView android:layout_width="100dip"android:layout_height="wrap_content" android:text="进程名:"></TextView><TextView android:id="@+id/tvProcessName"android:layout_width="wrap_content" android:layout_height="wrap_content"android:textColor="#FFD700"></TextView></LinearLayout></LinearLayout>
//得到系统的唤醒服务 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent" android:orientation="vertical" ><Button android:id="@+id/BtnGet"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="点击获取唤醒锁"/><Button android:id="@+id/BtnRelease"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="点击释放唤醒锁"/></LinearLayout>public class MainActivity extends Activity {private WakeLock wakeLock;private Button BtnGet;private Button BtnRelease;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {BtnGet.setOnClickListener(mylistener);BtnRelease.setOnClickListener(mylistener);}private void findView() {BtnGet = (Button)findViewById(R.id.BtnGet);BtnRelease = (Button)findViewById(R.id.BtnRelease);}OnClickListener mylistener = new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.BtnGet:acquireWakeLock();break;case R.id.BtnRelease:releaseWakeLock();break;default:break;}}};private void acquireWakeLock() {if (wakeLock == null) {Toast.makeText(this, "得到唤醒锁", Toast.LENGTH_SHORT).show();PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);wakeLock = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK, this.getClass().getCanonicalName());wakeLock.acquire();}}private void releaseWakeLock() {if (wakeLock != null && wakeLock.isHeld()) {wakeLock.release();wakeLock = null;}Toast.makeText(MainActivity.this, "释放唤醒锁",Toast.LENGTH_SHORT).show();}}
//定时任务启动 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/brodcast"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="定时发送广播" /><Buttonandroid:id="@+id/service"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="定时启动服务" /><Buttonandroid:id="@+id/brodcaststop"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="停止定时广播" /><Buttonandroid:id="@+id/servicestop"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="停止定时服务" /></LinearLayout>public class MainActivity extends Activity {private Button btnBrodcast;private Button btnService;private AlarmManager am;private Button btnBrodcastStop;private Button btnServiceStop;private PendingIntent pi1;private PendingIntent pi2;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);am = (AlarmManager) getSystemService(ALARM_SERVICE);findView();setListener();}private void findView() {btnBrodcast = (Button) findViewById(R.id.brodcast);btnService = (Button) findViewById(R.id.service);btnBrodcastStop = (Button) findViewById(R.id.brodcaststop);btnServiceStop = (Button) findViewById(R.id.servicestop);}private void setListener() {btnBrodcast.setOnClickListener(listener);btnBrodcastStop.setOnClickListener(listener);btnService.setOnClickListener(listener);btnServiceStop.setOnClickListener(listener);}OnClickListener listener = new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.brodcast:pi1 = PendingIntent.getBroadcast(MainActivity.this, 0,new Intent(MainActivity.this, ActionBroadCast.class),Intent.FLAG_ACTIVITY_NEW_TASK);long now = System.currentTimeMillis();am.setInexactRepeating(AlarmManager.RTC_WAKEUP, now, 3000, pi1);break;case R.id.brodcaststop:am.cancel(pi1);break;case R.id.service:pi2 = PendingIntent.getService(MainActivity.this, 0,new Intent(MainActivity.this, ActionService.class),Intent.FLAG_ACTIVITY_NEW_TASK);long now1 = System.currentTimeMillis();am.setInexactRepeating(AlarmManager.RTC_WAKEUP, now1, 3000, pi2);break;case R.id.servicestop:am.cancel(pi2);break;default:break;}}};}public class ActionService extends Service{private static int num = 0;@Overridepublic IBinder onBind(Intent intent) {return null;}@Overridepublic void onCreate() {super.onCreate();Log.e("ActionService", "New Message !" + num++);}}public class ActionBroadCast extends BroadcastReceiver {private static int num = 0;@Overridepublic void onReceive(Context context, Intent intent) {Log.e("ActionBroadCast", "New Message !" + num++);}}
//发送状态栏信息 public class MainActivity extends Activity {private Button btnNotification;private Notification baseNF;private NotificationManager nm;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);findView();setListener();}private void findView() {btnNotification = (Button) findViewById(R.id.show);}private void setListener() {btnNotification.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {setNotification();}});}@SuppressWarnings("deprecation")protected void setNotification() {baseNF = new Notification();baseNF.icon = R.drawable.ic_action_search;baseNF.tickerText = "I am a notification!";baseNF.defaults = Notification.DEFAULT_SOUND;PendingIntent pi = PendingIntent.getActivity(MainActivity.this, 0,new Intent(this, MainActivity.class), 0);baseNF.setLatestEventInfo(MainActivity.this, "Title01", "Content01", pi);nm.notify(0, baseNF);}}<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent" ><Buttonandroid:id="@+id/show"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="发送状态栏通知" /></RelativeLayout>
//得到屏幕状态 public class MainActivity extends Activity {private Button btnKeyguard;private KeyguardManager keyguardManager;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);keyguardManager=(KeyguardManager)getSystemService(Context.KEYGUARD_SERVICE);findView();setListener();}private void findView() {btnKeyguard = (Button) findViewById(R.id.reenableKeyguard);}private void setListener() {btnKeyguard.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {if(keyguardManager.isKeyguardLocked()){Toast.makeText(MainActivity.this, "锁屏", Toast.LENGTH_SHORT).show();}else{Toast.makeText(MainActivity.this, "没有锁屏", Toast.LENGTH_SHORT).show();}}});}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/reenableKeyguard"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="屏幕的状态" /></LinearLayout>
//程序中得到经纬度 public class MainActivity extends Activity {private Button btnPosition;private LocationManager locationManager;private TextView tv;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);locationManager=(LocationManager)getSystemService(Context.LOCATION_SERVICE);findView();setListener();}private void findView() {btnPosition = (Button) findViewById(R.id.position);tv = (TextView) findViewById(R.id.tv);}private void setListener() {locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 2000, 10,locationListener);btnPosition.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {tv.setText("当前的经度是:39.926325,"+"\n当前的纬度是:116.38945");}});}private final LocationListener locationListener = new LocationListener() {@Overridepublic void onStatusChanged(String provider, int status,Bundle extras) {}@Overridepublic void onProviderEnabled(String provider) {}@Overridepublic void onProviderDisabled(String provider) {}@Overridepublic void onLocationChanged(Location location) {tv.setText("当前的经度是"+location.getLatitude()+"当前的纬度是"+location.getLongitude());}};}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/position"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="当前的位置" /><TextViewandroid:id="@+id/tv"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="" /></LinearLayout>
//振动器应用 public class MainActivity extends Activity {private Button btnStart;private Vibrator vibrator;private Button btnStop;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);vibrator=(Vibrator)getSystemService(Context.VIBRATOR_SERVICE);findView();setListener();}private void findView() {btnStart = (Button) findViewById(R.id.start);btnStop=(Button)findViewById(R.id.stop);}private void setListener() {btnStart.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {vibrator.vibrate(new long[] {1000,1000,1000}, 0);}});btnStop.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {vibrator.cancel();}});}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/start"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="开始震动" /><Buttonandroid:id="@+id/stop"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="停止震动" /></LinearLayout>
//获得当前网络状态 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/btn_network"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="当前网络状态" /><TextViewandroid:id="@+id/tv_networkshow"android:layout_width="match_parent"android:layout_height="wrap_content"android:textSize="20dp" /></LinearLayout>public class MainActivity extends Activity {private Button btnNetWork;ConnectivityManager connManager ;private NetworkInfo networkInfo;private TextView tvNetWorkShow;private String strNetWork;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);connManager=(ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);networkInfo = connManager.getActiveNetworkInfo(); findView();setListener();}private void findView() {btnNetWork = (Button) findViewById(R.id.btn_network);tvNetWorkShow=(TextView)findViewById(R.id.tv_networkshow);}private void setListener() {btnNetWork.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {if(networkInfo.isAvailable()){strNetWork="当前网络可用\n";}else{strNetWork="当前网络不可用\n";}State state = connManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE).getState();if(state==State.CONNECTED){strNetWork+="GPRS网络已连接\n";}state = connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI).getState(); if(state==State.CONNECTED){strNetWork+="WIFI网络已连接\n";}tvNetWorkShow.setText(strNetWork);}});}}
//获得手机SIM卡信息 public class MainActivity extends Activity {private Button btnNetWork;private TelephonyManager tm;private TextView tvSimInfoShow;private String strSimInfo;private String [] simState={"状态未知","无SIM卡","别PIN加锁","被PUK加锁","被NetWork PIN加锁","已准备好"};private String [] phoneTypes={"未知","GSM","CDMA"};@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);tm=(TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE);findView();setListener();}private void findView() {btnNetWork = (Button) findViewById(R.id.btn_siminfo);tvSimInfoShow=(TextView)findViewById(R.id.tv_siminfoshow);}private void setListener() {btnNetWork.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {String deviceId=tm.getDeviceId();String Country=tm.getSimCountryIso();String SIMSerial=tm.getSimSerialNumber();String SIMState=simState[tm.getSimState()];String networkOperator= tm.getNetworkOperator();String networkOperatorName= tm.getNetworkOperatorName();String phoneType=phoneTypes[tm.getPhoneType()];strSimInfo="设备编号："+deviceId+"\nSIM卡的国别: "+Country+"\nSIM卡序列号: "+SIMSerial+"\nSIM卡状态: "+SIMState+"\n网络运营商代号 : "+networkOperator+"\n网络运营商名称: "+networkOperatorName+"\n手机的制式: "+phoneType;tvSimInfoShow.setText(strSimInfo);};});}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/btn_siminfo"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="当前SIM卡信息" /><TextView android:id="@+id/tv_siminfoshow"android:layout_width="match_parent"android:layout_height="wrap_content"android:textSize="20dp"/></LinearLayout>
//WiFi管理器 public class MainActivity extends Activity {private Button btnOpenWifi;private Button btnCloseWifi;private Button btnWifiList;private WifiManager mWifiManager;private List<ScanResult> mWifiList=new ArrayList<ScanResult>();private List<String> wifiList=new ArrayList<String>();private ListView lvWifiList;private TextView tvWifiInfo;private Button btnWifiInfo;private WifiInfo mWifiInfo;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);mWifiManager = (WifiManager)getSystemService(Context.WIFI_SERVICE);mWifiInfo = mWifiManager.getConnectionInfo(); findView();setListener();}private void findView() {btnOpenWifi = (Button) findViewById(R.id.btn_openwifi);btnCloseWifi=(Button)findViewById(R.id.btn_closewifi);btnWifiList=(Button)findViewById(R.id.btn_getwifilist);btnWifiInfo=(Button)findViewById(R.id.btn_getwifiinfo);lvWifiList=(ListView)findViewById(R.id.lv_wifilist);tvWifiInfo=(TextView)findViewById(R.id.tv_getwifiinfo);}private void setListener() {btnCloseWifi.setOnClickListener(listener);btnOpenWifi.setOnClickListener(listener);btnWifiList.setOnClickListener(listener);btnWifiInfo.setOnClickListener(listener);}OnClickListener listener=new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btn_openwifi:if (!mWifiManager.isWifiEnabled()){mWifiManager.setWifiEnabled(true);Toast.makeText(MainActivity.this, "WIFI已经开启", Toast.LENGTH_SHORT).show();}break;case R.id.btn_closewifi:if (mWifiManager.isWifiEnabled()){mWifiManager.setWifiEnabled(false); Toast.makeText(MainActivity.this, "WIFI已经关闭", Toast.LENGTH_SHORT).show();}break;case R.id.btn_getwifilist:if(mWifiManager.isWifiEnabled()){mWifiManager.startScan();mWifiList = mWifiManager.getScanResults();for(int i=0;i<mWifiList.size();i++){wifiList.add(mWifiList.get(i).SSID);}setAdapter();}else{Toast.makeText(MainActivity.this, "WIFI没有开启，无法扫描", Toast.LENGTH_SHORT).show();}break;case R.id.btn_getwifiinfo:String bssid=mWifiInfo.getBSSID();String macAddress=mWifiInfo.getMacAddress(); int ipAddress=mWifiInfo.getIpAddress();int netWorkId=mWifiInfo.getNetworkId();tvWifiInfo.setText("接入点的BSSID :"+bssid+"\nMAC地址 :"+macAddress+"\nIP地址 :"+ipAddress+"\n连接的ID :"+netWorkId);default:break;}}};protected void setAdapter() {ArrayAdapter<String> adapter=new ArrayAdapter<String>(MainActivity.this, android.R.layout.simple_list_item_1, wifiList);lvWifiList.setAdapter(adapter);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/btn_openwifi"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="开启WIFI" /><Buttonandroid:id="@+id/btn_closewifi"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="关闭WIFI" /><Buttonandroid:id="@+id/btn_getwifilist"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="获取WIFI列表" /><Buttonandroid:id="@+id/btn_getwifiinfo"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="得到WIFI信息" /><TextViewandroid:id="@+id/tv_getwifiinfo"android:layout_width="match_parent"android:layout_height="wrap_content" /><ListViewandroid:id="@+id/lv_wifilist"android:layout_width="match_parent"android:layout_height="wrap_content" /></LinearLayout>
//系统软键盘显示 public class MainActivity extends Activity {private Button btnSoft;InputMethodManager imm ;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);findView();setListener();}private void findView() {btnSoft = (Button) findViewById(R.id.btn_soft);}private void setListener() {btnSoft.setOnClickListener(listener);}OnClickListener listener=new OnClickListener() {@Overridepublic void onClick(View v) {imm.toggleSoftInput(0, InputMethodManager.HIDE_NOT_ALWAYS);}};}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/btn_soft"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="弹出/关闭软键盘" /></LinearLayout>
//打开系统行车模式 public class MainActivity extends Activity {private Button btnOpenDriverCar;private Button btnCloseDriverCar;private Button btnOpenNight;private Button btnCloseNight;private UiModeManager uiModeManager;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);uiModeManager = (UiModeManager)getSystemService(Context.UI_MODE_SERVICE);findView();setListener();}private void findView() {btnOpenDriverCar = (Button) findViewById(R.id.btn_opendrivercar);btnCloseDriverCar=(Button)findViewById(R.id.btn_closedrivercar);btnOpenNight=(Button)findViewById(R.id.btn_opennight);btnCloseNight=(Button)findViewById(R.id.btn_closenight);}private void setListener() {btnCloseDriverCar.setOnClickListener(listener);btnCloseNight.setOnClickListener(listener);btnOpenDriverCar.setOnClickListener(listener);btnOpenNight.setOnClickListener(listener);}OnClickListener listener=new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btn_opendrivercar:uiModeManager.enableCarMode(UiModeManager.ENABLE_CAR_MODE_GO_CAR_HOME);Toast.makeText(MainActivity.this, "已经开启行车模式", Toast.LENGTH_SHORT).show();break;case R.id.btn_closedrivercar:uiModeManager.disableCarMode(UiModeManager.DISABLE_CAR_MODE_GO_HOME);Toast.makeText(MainActivity.this, "已经关闭行车模式", Toast.LENGTH_SHORT).show();break;case R.id.btn_opennight:uiModeManager.setNightMode(UiModeManager.MODE_NIGHT_YES);Toast.makeText(MainActivity.this, "已经开启夜间模式", Toast.LENGTH_SHORT).show();break;case R.id.btn_closenight:uiModeManager.setNightMode(UiModeManager.MODE_NIGHT_NO);Toast.makeText(MainActivity.this, "已经关闭夜间模式", Toast.LENGTH_SHORT).show();break;default:break;}}};}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/btn_opendrivercar"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="开启行车模式" /><Buttonandroid:id="@+id/btn_closedrivercar"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="关闭行车模式" /><Buttonandroid:id="@+id/btn_opennight"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="开启夜间模式" /><Buttonandroid:id="@+id/btn_closenight"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="关闭夜间模式" /></LinearLayout>
//音量控制器 public class MainActivity extends Activity {private Button btnCurrentVolume;private Button btnIncreaseVolume;private Button btnDeclineVolume;private TextView tvVolume;private AudioManager audioManager ;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);audioManager = (AudioManager)getSystemService(Context.AUDIO_SERVICE);findView();setListener();}private void findView() {btnCurrentVolume = (Button) findViewById(R.id.btn_currentvolume);btnDeclineVolume=(Button)findViewById(R.id.btn_declinevolume);btnIncreaseVolume=(Button)findViewById(R.id.btn_increaselvolume);tvVolume=(TextView)findViewById(R.id.tv_volumn);}private void setListener() {btnCurrentVolume.setOnClickListener(listener);btnDeclineVolume.setOnClickListener(listener);btnIncreaseVolume.setOnClickListener(listener);}OnClickListener listener=new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btn_currentvolume:int currentCall = audioManager.getStreamVolume(AudioManager.STREAM_VOICE_CALL ); int currentSystem = audioManager.getStreamVolume(AudioManager.STREAM_SYSTEM ); int currentMusic = audioManager.getStreamVolume(AudioManager.STREAM_MUSIC ); int currentTip = audioManager.getStreamVolume(AudioManager.STREAM_ALARM );tvVolume.setText("当前的通话音量："+currentCall+"\n当前的系统音量: "+currentSystem+"\n当前的音乐音量: "+currentMusic+"\n当前的提示声音音量: "+currentTip);break;case R.id.btn_increaselvolume:audioManager.adjustStreamVolume(AudioManager.STREAM_SYSTEM,AudioManager.ADJUST_RAISE,AudioManager.FX_FOCUS_NAVIGATION_UP);break;case R.id.btn_declinevolume:audioManager.adjustStreamVolume(AudioManager.STREAM_SYSTEM,AudioManager.ADJUST_LOWER,AudioManager.FX_FOCUS_NAVIGATION_UP);break;}}};}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/btn_currentvolume"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="当前的音量" /><Buttonandroid:id="@+id/btn_increaselvolume"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="增大系统音量" /><Buttonandroid:id="@+id/btn_declinevolume"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="减小系统音量" /><TextViewandroid:id="@+id/tv_volumn"android:layout_width="match_parent"android:layout_height="wrap_content" /></LinearLayout>
//短信群发软件 public class MainActivity extends Activity {String SENT_SMS_ACTION = "SENT_SMS_ACTION";private EditText edit_no;private EditText edit_body;private Button button;private String body;private String[] address; @Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void findView() {edit_no = (EditText) findViewById(R.id.et_number);edit_body = (EditText) findViewById(R.id.et_body);button = (Button) findViewById(R.id.btn_send);}private void setListener() {button.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {String p = edit_no.getText().toString();body = edit_body.getText().toString();address = p.split(",");Set<String> addr = new HashSet<String>();for (int i = 0; i < address.length; i++) {addr.add(address[i]);}sendSMS(addr, body);edit_no.setText("");edit_body.setText("");}});}public void sendSMS(Set<String> phone, String body) {SmsManager msg = SmsManager.getDefault();Intent send = new Intent(SENT_SMS_ACTION);PendingIntent sendPI = PendingIntent.getBroadcast(this, 0, send, 0);for (String pno : phone) {msg.sendTextMessage(pno, null, body, sendPI, null);}}protected void onResume() {super.onResume();registerReceiver(sendMessage, new IntentFilter(SENT_SMS_ACTION));}BroadcastReceiver sendMessage = new BroadcastReceiver() {@Overridepublic void onReceive(Context c, Intent intent) {switch (getResultCode()) {case Activity.RESULT_OK:Toast.makeText(MainActivity.this, "发送成功！",Toast.LENGTH_SHORT).show();break;default:Toast.makeText(MainActivity.this, "发送失败！",Toast.LENGTH_SHORT).show();break;}}};}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><EditTextandroid:id="@+id/et_number"android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="号码" /><EditTextandroid:id="@+id/et_body"android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="内容" /><Buttonandroid:id="@+id/btn_send"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="发送" /></LinearLayout>
//电池状态查看器 public class MainActivity extends Activity {private Button btnBattery;private TextView tvBattery;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void findView() {btnBattery = (Button) findViewById(R.id.btn_battery);tvBattery = (TextView) findViewById(R.id.tv_battery);}private void setListener() {btnBattery.setOnClickListener(listener);}OnClickListener listener = new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btn_battery:IntentFilter filter = new IntentFilter();filter.addAction(Intent.ACTION_BATTERY_CHANGED);registerReceiver(mBroadcastReceiver, filter);break;}}};private BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {@Overridepublic void onReceive(Context context, Intent intent) {String action = intent.getAction();if (action.equals(Intent.ACTION_BATTERY_CHANGED)) {int status = intent.getIntExtra("status", 0);int health = intent.getIntExtra("health", 0);boolean present = intent.getBooleanExtra("present", false);int level = intent.getIntExtra("level", 0);int scale = intent.getIntExtra("scale", 0);int icon_small = intent.getIntExtra("icon-small", 0);int plugged = intent.getIntExtra("plugged", 0);int voltage = intent.getIntExtra("voltage", 0);int temperature = intent.getIntExtra("temperature", 0);String technology = intent.getStringExtra("technology");String statusString = "";switch (status) {case BatteryManager.BATTERY_STATUS_UNKNOWN:statusString = "unknown";break;case BatteryManager.BATTERY_STATUS_CHARGING:statusString = "charging";break;case BatteryManager.BATTERY_STATUS_DISCHARGING:statusString = "discharging";break;case BatteryManager.BATTERY_STATUS_NOT_CHARGING:statusString = "not charging";break;case BatteryManager.BATTERY_STATUS_FULL:statusString = "full";break;}String healthString = "";switch (health) {case BatteryManager.BATTERY_HEALTH_UNKNOWN:healthString = "unknown";break;case BatteryManager.BATTERY_HEALTH_GOOD:healthString = "good";break;case BatteryManager.BATTERY_HEALTH_OVERHEAT:healthString = "overheat";break;case BatteryManager.BATTERY_HEALTH_DEAD:healthString = "dead";break;case BatteryManager.BATTERY_HEALTH_OVER_VOLTAGE:healthString = "voltage";break;case BatteryManager.BATTERY_HEALTH_UNSPECIFIED_FAILURE:healthString = "unspecified failure";break;}String acString = "";switch (plugged) {case BatteryManager.BATTERY_PLUGGED_AC:acString = "plugged ac";break;case BatteryManager.BATTERY_PLUGGED_USB:acString = "plugged usb";break;}tvBattery.setText("电池的状态：" + statusString+ "\n健康值: "+ healthString + "\n电池剩余容量： " + level+ "\n电池的最大值：" + scale+ "\n小图标：" + icon_small+ "\n充电方式：" + plugged+ "\n充电方式: " + acString+ "\n电池的电压：" + voltage+ "\n电池的温度：" + (float) temperature * 0.1+ "\n电池的类型：" + technology);}}};@Overrideprotected void onPause() {super.onPause();unregisterReceiver(mBroadcastReceiver);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/btn_battery"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="获取电池的信息" /><TextViewandroid:id="@+id/tv_battery"android:layout_width="match_parent"android:layout_height="wrap_content"/></LinearLayout>
Android中的广播的使用
//飞行模式的切换 public class MainActivity extends Activity {private Button btnStartFly;private Button btnStopFly;private ContentResolver cr;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);cr = getContentResolver();findView();setListener();}private void findView() {btnStartFly = (Button) findViewById(R.id.btn_startflying);btnStopFly = (Button) findViewById(R.id.btn_stopflying);}private void setListener() {btnStartFly.setOnClickListener(listener);btnStopFly.setOnClickListener(listener);}OnClickListener listener = new OnClickListener() {@SuppressWarnings("deprecation")@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btn_startflying:if (Settings.System.getString(cr,Settings.System.AIRPLANE_MODE_ON).equals("0")) {Log.e("AIRPLANE_MODE_ON", "0");Settings.System.putString(cr,Settings.System.AIRPLANE_MODE_ON, "1");Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED).putExtra("state", true);;sendBroadcast(intent);Toast.makeText(MainActivity.this,"已开启飞行模式",Toast.LENGTH_SHORT).show();}break;case R.id.btn_stopflying:if (Settings.System.getString(cr,Settings.System.AIRPLANE_MODE_ON).equals("1")) {Log.e("AIRPLANE_MODE_ON", "1");Settings.System.putString(cr,Settings.System.AIRPLANE_MODE_ON, "0");Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED).putExtra("state", false);;sendBroadcast(intent);Toast.makeText(MainActivity.this, "已关闭飞行模式",Toast.LENGTH_SHORT).show();}break;}}};}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/btn_startflying"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="开启飞行模式" /><Buttonandroid:id="@+id/btn_stopflying"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="关闭飞行模式" /></LinearLayout>
//创建桌面快捷方式 public class MainActivity extends Activity {private static final String CREATE_SHORTCUT_ACTION = "com.android.launcher.action.INSTALL_SHORTCUT";private static final String DROP_SHORTCUT_ACTION = "com.android.launcher.action.UNINSTALL_SHORTCUT";private Button btnDel;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);addShortcut(MainActivity.this);setContentView(R.layout.activity_main);findView();setListener();}private void findView() {btnDel = (Button) findViewById(R.id.btn_del);}private void setListener() {btnDel.setOnClickListener(listener);}OnClickListener listener = new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btn_del:delShortcut(MainActivity.this);Toast.makeText(MainActivity.this, "删除成功", Toast.LENGTH_SHORT).show();}}};public void addShortcut(Context cx) {Intent shortcut = new Intent(CREATE_SHORTCUT_ACTION);Intent shortcutIntent = cx.getPackageManager().getLaunchIntentForPackage(cx.getPackageName());shortcut.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcutIntent);String title = null;try {final PackageManager pm = cx.getPackageManager();title = pm.getApplicationLabel(pm.getApplicationInfo(cx.getPackageName(),PackageManager.GET_META_DATA)).toString();} catch (Exception e) {}shortcut.putExtra(Intent.EXTRA_SHORTCUT_NAME, title);shortcut.putExtra("duplicate", false);Parcelable iconResource = Intent.ShortcutIconResource.fromContext(cx,R.drawable.ic_launcher);shortcut.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, iconResource);cx.sendBroadcast(shortcut);}public void delShortcut(Context cx) {Intent shortcut = new Intent(DROP_SHORTCUT_ACTION);String title = null;try {final PackageManager pm = cx.getPackageManager();title = pm.getApplicationLabel(pm.getApplicationInfo(cx.getPackageName(),PackageManager.GET_META_DATA)).toString();} catch (Exception e) {}shortcut.putExtra(Intent.EXTRA_SHORTCUT_NAME, title);Intent shortcutIntent = cx.getPackageManager().getLaunchIntentForPackage(cx.getPackageName());shortcut.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcutIntent);cx.sendBroadcast(shortcut);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/btn_del"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="删除桌面快捷方式" /></LinearLayout>
//程序开机自动启动 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/btn_startafterboot"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="开机启动" /><Buttonandroid:id="@+id/btn_notstartafterboot"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="开机不启动" /></LinearLayout>
//拍照物理键的功能定制 public class BootCompletedReceiver extends BroadcastReceiver {@Overridepublic void onReceive(Context arg0, Intent arg1) {if (arg1.getAction().equals(Intent.ACTION_BOOT_COMPLETED)) {Intent newIntent = new Intent(arg0, MainActivity.class);newIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); arg0.startActivity(newIntent);}}}public class MainActivity extends Activity {private Button btnStartAfterBoot;private Button btnNotStartAfterBoot;private BootCompletedReceiver receiver;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);receiver=new BootCompletedReceiver();findView();setListener();}private void findView() {btnNotStartAfterBoot = (Button) findViewById(R.id.btn_notstartafterboot);btnStartAfterBoot=(Button)findViewById(R.id.btn_startafterboot);}private void setListener() {btnStartAfterBoot.setOnClickListener(listener);btnNotStartAfterBoot.setOnClickListener(listener);}OnClickListener listener=new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btn_startafterboot:registerReceiver(receiver, new IntentFilter("android.intent.action.BOOT_COMPLETED"));Toast.makeText(MainActivity.this, "开机自启动已完成", Toast.LENGTH_SHORT).show();break;case R.id.btn_notstartafterboot:if(receiver!=null){unregisterReceiver(receiver);Toast.makeText(MainActivity.this, "取消开机自启动已完成", Toast.LENGTH_SHORT).show();}break;}}};}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/btn_startafterboot"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="开机启动" /><Buttonandroid:id="@+id/btn_notstartafterboot"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="开机不启动" /></LinearLayout>
//锁屏广播接收器 public class MainActivity extends Activity {private Button btnStartTake;private Button btnCancelTake;private TakePhotoReceiver receiver;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);receiver=new TakePhotoReceiver();findView();setListener();}private void findView() {btnCancelTake = (Button) findViewById(R.id.btn_notstarttake);btnStartTake=(Button)findViewById(R.id.btn_starttake);}private void setListener() {btnStartTake.setOnClickListener(listener);btnCancelTake.setOnClickListener(listener);}OnClickListener listener=new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btn_starttake:registerReceiver(receiver, new IntentFilter(Intent.ACTION_CAMERA_BUTTON));Toast.makeText(MainActivity.this, "拍照广播启动已完成", Toast.LENGTH_SHORT).show();break;case R.id.btn_notstarttake:if(receiver!=null){unregisterReceiver(receiver);Toast.makeText(MainActivity.this, "取消拍照广播已完成", Toast.LENGTH_SHORT).show();}break;}}};}public class TakePhotoReceiver extends BroadcastReceiver {@Overridepublic void onReceive(Context arg0, Intent arg1) {if (arg1.getAction().equals(Intent.ACTION_CAMERA_BUTTON)) {Toast.makeText(arg0, "检测到到拍照广播", Toast.LENGTH_SHORT).show();}}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/btn_starttake"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="启动拍照广播" /><Buttonandroid:id="@+id/btn_notstarttake"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="取消启动拍照广播" /></LinearLayout>
//系统设置信息改变的广播 public class LockScreenReceiver extends BroadcastReceiver {@Overridepublic void onReceive(Context arg0, Intent arg1) {if (arg1.getAction().equals(Intent.ACTION_SCREEN_ON)) {Toast.makeText(arg0, "检测到解锁广播", Toast.LENGTH_SHORT).show();}else if (arg1.getAction().equals(Intent.ACTION_SCREEN_OFF)) {Toast.makeText(arg0, "检测到锁屏广播", Toast.LENGTH_SHORT).show();}}}public class MainActivity extends Activity {private Button btnLockScreen;private Button btnCancelLockScreen;private Button btnOpenScreen;private Button btnCancelOpenScreen;private LockScreenReceiver lockReceiver;private LockScreenReceiver openReceiver;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);lockReceiver=new LockScreenReceiver();openReceiver=new LockScreenReceiver();findView();setListener();}private void findView() {btnCancelLockScreen = (Button) findViewById(R.id.btn_cancellockscreen);btnCancelOpenScreen=(Button)findViewById(R.id.btn_cancelopenscreen);btnOpenScreen=(Button)findViewById(R.id.btn_startopenscreen);btnLockScreen=(Button)findViewById(R.id.btn_startlockscreen);}private void setListener() {btnCancelLockScreen.setOnClickListener(listener);btnLockScreen.setOnClickListener(listener);btnCancelOpenScreen.setOnClickListener(listener);btnOpenScreen.setOnClickListener(listener);}OnClickListener listener=new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btn_startlockscreen:registerReceiver(lockReceiver, new IntentFilter(Intent.ACTION_SCREEN_OFF));Toast.makeText(MainActivity.this, "锁屏广播启动已完成", Toast.LENGTH_SHORT).show();break;case R.id.btn_cancellockscreen:if(lockReceiver!=null){unregisterReceiver(lockReceiver);Toast.makeText(MainActivity.this, "取消锁屏广播已完成", Toast.LENGTH_SHORT).show();}break;case R.id.btn_startopenscreen:registerReceiver(openReceiver, new IntentFilter(Intent.ACTION_SCREEN_ON));Toast.makeText(MainActivity.this, "解锁广播启动已完成", Toast.LENGTH_SHORT).show();break;case R.id.btn_cancelopenscreen:if(openReceiver!=null){unregisterReceiver(openReceiver);Toast.makeText(MainActivity.this, "取消解锁广播已完成", Toast.LENGTH_SHORT).show();}break;}}};}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/btn_startlockscreen"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="启动锁屏广播" /><Buttonandroid:id="@+id/btn_startopenscreen"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="启动解锁广播" /><Buttonandroid:id="@+id/btn_cancellockscreen"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="取消锁屏广播" /><Buttonandroid:id="@+id/btn_cancelopenscreen"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="取消解锁广播" /></LinearLayout>
//系统内存不足提醒 public class MainActivity extends Activity {private Button btnSetChange;private Button btnCancelSetChange;private SetChangeReceiver SetingReceiver;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);SetingReceiver=new SetChangeReceiver();findView();setListener();}private void findView() {btnCancelSetChange = (Button) findViewById(R.id.btn_cancelsetchange);btnSetChange=(Button)findViewById(R.id.btn_startsetchange);}private void setListener() {btnCancelSetChange.setOnClickListener(listener);btnSetChange.setOnClickListener(listener);}OnClickListener listener=new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btn_startsetchange:registerReceiver(SetingReceiver, new IntentFilter(Intent.ACTION_CONFIGURATION_CHANGED));Toast.makeText(MainActivity.this, "设置改变广播启动已完成", Toast.LENGTH_SHORT).show();break;case R.id.btn_cancelsetchange:if(SetingReceiver!=null){unregisterReceiver(SetingReceiver);Toast.makeText(MainActivity.this, "取消设置改变广播已完成", Toast.LENGTH_SHORT).show();}break;}}};}public class SetChangeReceiver extends BroadcastReceiver {@Overridepublic void onReceive(Context arg0, Intent arg1) {if (arg1.getAction().equals(Intent.ACTION_CONFIGURATION_CHANGED)) {Toast.makeText(arg0, "检测到设置改变广播", Toast.LENGTH_SHORT).show();}}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/btn_startsetchange"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="启动设置改变广播" /><Buttonandroid:id="@+id/btn_cancelsetchange"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="取消设置改变的广播" /></LinearLayout>
//接受耳机插入广播 public class MainActivity extends Activity {private Button btnMemoryLess;private Button btnCancelMemoryLess;private MemoryLessReceiver memoryLessReceiver;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);memoryLessReceiver=new MemoryLessReceiver();findView();setListener();}private void findView() {btnMemoryLess = (Button) findViewById(R.id.btn_cancelmemoryless);btnCancelMemoryLess=(Button)findViewById(R.id.btn_startmemoryless);}private void setListener() {btnCancelMemoryLess.setOnClickListener(listener);btnMemoryLess.setOnClickListener(listener);}OnClickListener listener=new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btn_startmemoryless:registerReceiver(memoryLessReceiver, new IntentFilter(Intent.ACTION_DEVICE_STORAGE_LOW));Toast.makeText(MainActivity.this, "设置内存不足广播启动已完成", Toast.LENGTH_SHORT).show();break;case R.id.btn_cancelmemoryless:if(memoryLessReceiver!=null){unregisterReceiver(memoryLessReceiver);Toast.makeText(MainActivity.this, "取消内存不足广播已完成", Toast.LENGTH_SHORT).show();}break;}}};}public class MemoryLessReceiver extends BroadcastReceiver {@Overridepublic void onReceive(Context arg0, Intent arg1) {if (arg1.getAction().equals(Intent.ACTION_DEVICE_STORAGE_LOW)) {Toast.makeText(arg0, "检测到内存不足广播", Toast.LENGTH_SHORT).show();}}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/btn_startmemoryless"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="启动内存不足广播" /><Buttonandroid:id="@+id/btn_cancelmemoryless"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="取消内存不足广播" /></LinearLayout>
//手机区域设置更改监听器 public class EarphoneInsertReceiver extends BroadcastReceiver {@Overridepublic void onReceive(Context arg0, Intent arg1) {if (arg1.getAction().equals(Intent.ACTION_HEADSET_PLUG)) {Toast.makeText(arg0, "检测到耳机插入广播", Toast.LENGTH_SHORT).show();}}}public class MainActivity extends Activity {private Button btnEarphoneInsert;private Button btnCancelEarphoneInsert;private EarphoneInsertReceiver earphoneInsertReceiver;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);earphoneInsertReceiver = new EarphoneInsertReceiver();findView();setListener();}private void findView() {btnEarphoneInsert = (Button) findViewById(R.id.btn_startearphoneinsert);btnCancelEarphoneInsert = (Button) findViewById(R.id.btn_cancelearphoneinsert);}private void setListener() {btnEarphoneInsert.setOnClickListener(listener);btnCancelEarphoneInsert.setOnClickListener(listener);}OnClickListener listener = new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btn_startearphoneinsert:registerReceiver(earphoneInsertReceiver, new IntentFilter(Intent.ACTION_HEADSET_PLUG));Toast.makeText(MainActivity.this, "设置耳机插入广播启动已完成",Toast.LENGTH_SHORT).show();break;case R.id.btn_cancelearphoneinsert:if (earphoneInsertReceiver != null) {unregisterReceiver(earphoneInsertReceiver);Toast.makeText(MainActivity.this, "取消耳机插入广播已完成",Toast.LENGTH_SHORT).show();}break;}}};}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/btn_startearphoneinsert"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="启动耳机插入广播" /><Buttonandroid:id="@+id/btn_cancelearphoneinsert"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="取消耳机插入广播" /></LinearLayout>
//SDCard插入的广播 public class AreaChangeReceiver extends BroadcastReceiver {@Overridepublic void onReceive(Context arg0, Intent arg1) {if (arg1.getAction().equals(Intent.ACTION_LOCALE_CHANGED)) {Toast.makeText(arg0, "检测到当前区域设置已更改广播", Toast.LENGTH_SHORT).show();}}}public class MainActivity extends Activity {private Button btnAreaChange;private Button btnCancelAreaChange;private AreaChangeReceiver areaChangeReceiver;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);areaChangeReceiver = new AreaChangeReceiver();findView();setListener();}private void findView() {btnAreaChange = (Button) findViewById(R.id.btn_startedistancechange);btnCancelAreaChange = (Button) findViewById(R.id.btn_canceldistancechange);}private void setListener() {btnAreaChange.setOnClickListener(listener);btnCancelAreaChange.setOnClickListener(listener);}OnClickListener listener = new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btn_startedistancechange:registerReceiver(areaChangeReceiver, new IntentFilter(Intent.ACTION_LOCALE_CHANGED));Toast.makeText(MainActivity.this, "设置当前区域设置已更改广播启动已完成",Toast.LENGTH_SHORT).show();break;case R.id.btn_canceldistancechange:if (areaChangeReceiver != null) {unregisterReceiver(areaChangeReceiver);Toast.makeText(MainActivity.this, "取消当前区域设置已更改广播已完成",Toast.LENGTH_SHORT).show();}break;}}};}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/btn_startedistancechange"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="启动当前区域设置已更改广播" /><Buttonandroid:id="@+id/btn_canceldistancechange"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="取消当前区域设置已更改广播" /></LinearLayout>
//SDCard移除的广播 public class MainActivity extends Activity {private Button btnSdCardInsert;private Button btnCancelSdCardInsert;private SdcardInsertReceiver sdcardInsertReceiver;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);sdcardInsertReceiver=new SdcardInsertReceiver();findView();setListener();}private void findView() {btnSdCardInsert = (Button) findViewById(R.id.btn_startedsdcardinsert);btnCancelSdCardInsert=(Button)findViewById(R.id.btn_cancelsdcardinsert);}private void setListener() {btnSdCardInsert.setOnClickListener(listener);btnCancelSdCardInsert.setOnClickListener(listener);}OnClickListener listener=new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btn_startedsdcardinsert:registerReceiver(sdcardInsertReceiver, new IntentFilter(Intent.ACTION_MEDIA_MOUNTED));Toast.makeText(MainActivity.this, "设置SD卡插入广播启动已完成", Toast.LENGTH_SHORT).show();break;case R.id.btn_cancelsdcardinsert:if(sdcardInsertReceiver!=null){unregisterReceiver(sdcardInsertReceiver);Toast.makeText(MainActivity.this, "取消SD卡插入广播已完成", Toast.LENGTH_SHORT).show();}break;}}};}public class SdcardInsertReceiver extends BroadcastReceiver {@Overridepublic void onReceive(Context arg0, Intent arg1) {if (arg1.getAction().equals(Intent.ACTION_MEDIA_MOUNTED)) {Toast.makeText(arg0, "检测到SD卡插入广播", Toast.LENGTH_SHORT).show();}}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/btn_startedsdcardinsert"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="启动sdcard的插入广播" /><Buttonandroid:id="@+id/btn_cancelsdcardinsert"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="取消sdcard的插入广播" /></LinearLayout>
//APK安装完成的广播 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/btn_startedinstallapk"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="启动安装完成APK的广播" /><Buttonandroid:id="@+id/btn_cancelinstallapk"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="取消安装完成APK的拔出广播" /></LinearLayout>public class MainActivity extends Activity {private Button btnInstallApk;private Button btnCancelInstallApk;private InstallApkReceiver installApkReceiver;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);installApkReceiver=new InstallApkReceiver();findView();setListener();}private void findView() {btnInstallApk = (Button) findViewById(R.id.btn_startedinstallapk);btnCancelInstallApk=(Button)findViewById(R.id.btn_cancelinstallapk);}private void setListener() {btnInstallApk.setOnClickListener(listener);btnCancelInstallApk.setOnClickListener(listener);}OnClickListener listener=new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btn_startedinstallapk:registerReceiver(installApkReceiver, new IntentFilter(Intent.ACTION_PACKAGE_ADDED));Toast.makeText(MainActivity.this, "设置安装完成APK广播启动已完成", Toast.LENGTH_SHORT).show();break;case R.id.btn_cancelinstallapk:if(installApkReceiver!=null){unregisterReceiver(installApkReceiver);Toast.makeText(MainActivity.this, "取消安装完成APK广播已完成", Toast.LENGTH_SHORT).show();}break;}}};}public class InstallApkReceiver extends BroadcastReceiver {@Overridepublic void onReceive(Context arg0, Intent arg1) {if (arg1.getAction().equals(Intent.ACTION_PACKAGE_ADDED)) {Toast.makeText(arg0, "检测到安装完成APK广播", Toast.LENGTH_SHORT).show();}}}
//APK卸载完成的广播 public class MainActivity extends Activity {private Button btnUnstallApk;private Button btnCancelUnstallApk;private UnstallApkReceiver unstallApkReceiver;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);unstallApkReceiver=new UnstallApkReceiver();findView();setListener();}private void findView() {btnUnstallApk = (Button) findViewById(R.id.btn_startedunstallapk);btnCancelUnstallApk=(Button)findViewById(R.id.btn_cancelunstallapk);}private void setListener() {btnUnstallApk.setOnClickListener(listener);btnCancelUnstallApk.setOnClickListener(listener);}OnClickListener listener=new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btn_startedunstallapk:registerReceiver(unstallApkReceiver, new IntentFilter(Intent.ACTION_PACKAGE_REMOVED));Toast.makeText(MainActivity.this, "设置卸载APK广播启动已完成", Toast.LENGTH_SHORT).show();break;case R.id.btn_cancelunstallapk:if(unstallApkReceiver!=null){unregisterReceiver(unstallApkReceiver);Toast.makeText(MainActivity.this, "取消卸载APK广播已完成", Toast.LENGTH_SHORT).show();}break;}}};}public class UnstallApkReceiver extends BroadcastReceiver {@Overridepublic void onReceive(Context arg0, Intent arg1) {if (arg1.getAction().equals(Intent.ACTION_PACKAGE_REMOVED)) {Toast.makeText(arg0, "检测到卸载APK广播", Toast.LENGTH_SHORT).show();}}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/btn_startedunstallapk"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="启动卸载APK的广播" /><Buttonandroid:id="@+id/btn_cancelunstallapk"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="取消安卸载APK的拔出广播" /></LinearLayout>
//外部电源接入的广播 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/btn_startedplugin"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="启动插上外部电源的广播" /><Buttonandroid:id="@+id/btn_cancelplugin"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="取消插上外部电源的拔出广播" /></LinearLayout>public class PlugInReceiver extends BroadcastReceiver {@Overridepublic void onReceive(Context arg0, Intent arg1) {if (arg1.getAction().equals(Intent.ACTION_POWER_CONNECTED)) {Toast.makeText(arg0, "检测到插上外部电源广播", Toast.LENGTH_SHORT).show();}}}public class MainActivity extends Activity {private Button btnPlugIn;private Button btnCancelPlugIn;private PlugInReceiver plugInReceiver;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);plugInReceiver = new PlugInReceiver();findView();setListener();}private void findView() {btnPlugIn = (Button) findViewById(R.id.btn_startedplugin);btnCancelPlugIn = (Button) findViewById(R.id.btn_cancelplugin);}private void setListener() {btnPlugIn.setOnClickListener(listener);btnCancelPlugIn.setOnClickListener(listener);}OnClickListener listener = new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btn_startedplugin:registerReceiver(plugInReceiver, new IntentFilter(Intent.ACTION_POWER_CONNECTED));Toast.makeText(MainActivity.this, "设置插上外部电源广播启动已完成",Toast.LENGTH_SHORT).show();break;case R.id.btn_cancelplugin:if (plugInReceiver != null) {unregisterReceiver(plugInReceiver);Toast.makeText(MainActivity.this, "取消插上外部电源广播已完成",Toast.LENGTH_SHORT).show();}break;}}};}
//重启系统的广播 public class MainActivity extends Activity {private Button btnRestartPhone;private Button btnCancelRestartPhone;private RestartPhoneReceiver restartPhoneReceiver;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);restartPhoneReceiver=new RestartPhoneReceiver();findView();setListener();}private void findView() {btnRestartPhone = (Button) findViewById(R.id.btn_startrestartphone);btnCancelRestartPhone=(Button)findViewById(R.id.btn_cancelrestartphone);}private void setListener() {btnRestartPhone.setOnClickListener(listener);btnCancelRestartPhone.setOnClickListener(listener);}OnClickListener listener=new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btn_startrestartphone:registerReceiver(restartPhoneReceiver, new IntentFilter(Intent.ACTION_REBOOT));Toast.makeText(MainActivity.this, "设置重启设备广播启动已完成", Toast.LENGTH_SHORT).show();break;case R.id.btn_cancelrestartphone:if(restartPhoneReceiver!=null){unregisterReceiver(restartPhoneReceiver);Toast.makeText(MainActivity.this, "取消重启设备广播已完成", Toast.LENGTH_SHORT).show();}break;}}};}public class RestartPhoneReceiver extends BroadcastReceiver {@Overridepublic void onReceive(Context arg0, Intent arg1) {if (arg1.getAction().equals(Intent.ACTION_REBOOT)) {Toast.makeText(arg0, "检测到重启设备广播", Toast.LENGTH_SHORT).show();}}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/btn_startrestartphone"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="启动重启设备的广播" /><Buttonandroid:id="@+id/btn_cancelrestartphone"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="取消重启设备的拔出广播" /></LinearLayout>
//断开电源的广播 public class BreakPowerReceiver extends BroadcastReceiver {@Overridepublic void onReceive(Context arg0, Intent arg1) {if (arg1.getAction().equals(Intent.ACTION_POWER_DISCONNECTED)) {Toast.makeText(arg0, "检测到已断开外部电源连接广播", Toast.LENGTH_SHORT).show();}}}public class MainActivity extends Activity {private Button btnBreakPower;private Button btnCancelBreakPower;private BreakPowerReceiver breakPowerReceiver;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);breakPowerReceiver=new BreakPowerReceiver();findView();setListener();}private void findView() {btnBreakPower = (Button) findViewById(R.id.btn_startbreakpower);btnCancelBreakPower=(Button)findViewById(R.id.btn_cancelbreakpower);}private void setListener() {btnBreakPower.setOnClickListener(listener);btnCancelBreakPower.setOnClickListener(listener);}OnClickListener listener=new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btn_startbreakpower:registerReceiver(breakPowerReceiver, new IntentFilter(Intent.ACTION_POWER_DISCONNECTED));Toast.makeText(MainActivity.this, "设置已断开外部电源连接广播启动已完成", Toast.LENGTH_SHORT).show();break;case R.id.btn_cancelbreakpower:if(breakPowerReceiver!=null){unregisterReceiver(breakPowerReceiver);Toast.makeText(MainActivity.this, "取消已断开外部电源连接广播已完成", Toast.LENGTH_SHORT).show();}break;}}};}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/btn_startbreakpower"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="启动断开外部电源连接的广播" /><Buttonandroid:id="@+id/btn_cancelbreakpower"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="取消断开外部电源连接的广播" /></LinearLayout>
//墙纸改变的广播 public class ChangeWallerReceiver extends BroadcastReceiver {@SuppressWarnings("deprecation")@Overridepublic void onReceive(Context arg0, Intent arg1) {if (arg1.getAction().equals(Intent.ACTION_WALLPAPER_CHANGED)) {Toast.makeText(arg0, "检测到更换壁纸的广播", Toast.LENGTH_SHORT).show();}}}public class MainActivity extends Activity {private Button btnChangeWaller;private Button btnCancelChangeWaller;private ChangeWallerReceiver changeWallerReceiver;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);changeWallerReceiver = new ChangeWallerReceiver();findView();setListener();}private void findView() {btnChangeWaller = (Button) findViewById(R.id.btn_startchangewaller);btnCancelChangeWaller = (Button) findViewById(R.id.btn_cancelchangewaller);}private void setListener() {btnChangeWaller.setOnClickListener(listener);btnCancelChangeWaller.setOnClickListener(listener);}OnClickListener listener = new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btn_startchangewaller:registerReceiver(changeWallerReceiver, new IntentFilter(Intent.ACTION_WALLPAPER_CHANGED));Toast.makeText(MainActivity.this, "设置更换壁纸广播启动已完成",Toast.LENGTH_SHORT).show();break;case R.id.btn_cancelchangewaller:if (changeWallerReceiver != null) {unregisterReceiver(changeWallerReceiver);Toast.makeText(MainActivity.this, "取消更换壁纸广播已完成",Toast.LENGTH_SHORT).show();}break;}}};}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/btn_startchangewaller"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="启动更换壁纸的广播" /><Buttonandroid:id="@+id/btn_cancelchangewaller"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="取消更换壁纸的广播" /></LinearLayout>
//电话黑名单 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><EditText android:id="@+id/et_blackphone"android:layout_width="fill_parent"android:layout_height="wrap_content"android:hint="请输入要拦截的号码"/><Buttonandroid:id="@+id/btn_startholdup"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="启动拦截号码的广播" /><Buttonandroid:id="@+id/btn_cancelholdup"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="取消拦截号码的广播" /></LinearLayout>public class HoldUpReceiver extends BroadcastReceiver {private String holdUpPhone;public HoldUpReceiver(String string) {holdUpPhone = string;}@Overridepublic void onReceive(Context arg0, Intent arg1) {if (arg1.getAction().equals(MainActivity.PHONE_STATE)) {Toast.makeText(arg0, "检测到来电的广播", Toast.LENGTH_SHORT).show();String phoneNumber = arg1.getStringExtra(TelephonyManager.EXTRA_INCOMING_NUMBER);TelephonyManager telephony = (TelephonyManager) arg0.getSystemService(Context.TELEPHONY_SERVICE);int state = telephony.getCallState();switch (state) {case TelephonyManager.CALL_STATE_RINGING:if (holdUpPhone.equals(phoneNumber)) {holdupphone(telephony);}break;case TelephonyManager.CALL_STATE_IDLE:Toast.makeText(arg0,"idle: " + arg1.getStringExtra("incoming_number"),Toast.LENGTH_LONG).show();break;case TelephonyManager.CALL_STATE_OFFHOOK:Toast.makeText(arg0,"OffHook: " + arg1.getStringExtra("incoming_number"),Toast.LENGTH_LONG).show();break;}}}public void holdupphone(TelephonyManager teleManager) {Class c;try {c = Class.forName(teleManager.getClass().getName());Method m = c.getDeclaredMethod("getITelephony");m.setAccessible(true);ITelephony iTelephony = (ITelephony) m.invoke(teleManager);iTelephony.endCall();} catch (ClassNotFoundException e) {e.printStackTrace();} catch (SecurityException e) {e.printStackTrace();} catch (NoSuchMethodException e) {e.printStackTrace();} catch (IllegalArgumentException e) {e.printStackTrace();} catch (IllegalAccessException e) {e.printStackTrace();} catch (InvocationTargetException e) {e.printStackTrace();} catch (RemoteException e) {e.printStackTrace();}}}public class MainActivity extends Activity {private Button btnHoldUp;private Button btnCancelHoldUp;private EditText etHoldUpPhone;public final static String PHONE_STATE = TelephonyManager.ACTION_PHONE_STATE_CHANGED;private HoldUpReceiver holdUpReceiver;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void findView() {btnHoldUp = (Button) findViewById(R.id.btn_startholdup);btnCancelHoldUp = (Button) findViewById(R.id.btn_cancelholdup);etHoldUpPhone = (EditText) findViewById(R.id.et_blackphone);}private void setListener() {btnHoldUp.setOnClickListener(listener);btnCancelHoldUp.setOnClickListener(listener);}OnClickListener listener = new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btn_startholdup:holdUpReceiver = new HoldUpReceiver(etHoldUpPhone.getText().toString());registerReceiver(holdUpReceiver, new IntentFilter(PHONE_STATE));Toast.makeText(MainActivity.this, "设置拦截号码广播启动已完成",Toast.LENGTH_SHORT).show();break;case R.id.btn_cancelholdup:if (holdUpReceiver != null) {unregisterReceiver(holdUpReceiver);Toast.makeText(MainActivity.this, "取消拦截号码广播已完成",Toast.LENGTH_SHORT).show();}break;}}};}
//短信接收的广播 public class MainActivity extends Activity {private Button btnReceiverMsg;private Button btnCancelReceiverMsg;private ReceiverMsgReceiver receiverMsgReceiver;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);receiverMsgReceiver = new ReceiverMsgReceiver();findView();setListener();}private void findView() {btnReceiverMsg = (Button) findViewById(R.id.btn_startreceivemessage);btnCancelReceiverMsg = (Button) findViewById(R.id.btn_cancelreceivemessage);}private void setListener() {btnReceiverMsg.setOnClickListener(listener);btnCancelReceiverMsg.setOnClickListener(listener);}OnClickListener listener = new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btn_startreceivemessage:registerReceiver(receiverMsgReceiver, new IntentFilter("android.provider.Telephony.SMS_RECEIVED"));Toast.makeText(MainActivity.this, "设置短信接收广播启动已完成",Toast.LENGTH_SHORT).show();break;case R.id.btn_cancelreceivemessage:if (receiverMsgReceiver != null) {unregisterReceiver(receiverMsgReceiver);Toast.makeText(MainActivity.this, "取消短信接收广播已完成",Toast.LENGTH_SHORT).show();}break;}}};}public class ReceiverMsgReceiver extends BroadcastReceiver {@Overridepublic void onReceive(Context arg0, Intent arg1) {if (arg1.getAction().equals("android.provider.Telephony.SMS_RECEIVED")) {Toast.makeText(arg0, "检测到短信到达的广播", Toast.LENGTH_SHORT).show();}}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/btn_startreceivemessage"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="启动短信接收的广播" /><Buttonandroid:id="@+id/btn_cancelreceivemessage"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="取消短信接收的广播" /></LinearLayout>
//短信发送的广播 public class MainActivity extends Activity {public static String SMS_SEND_ACTIOIN = "SMS_SEND_ACTIOIN";public static String SMS_DELIVERED_ACTION = "SMS_DELIVERED_ACTION";private SendMsgReceiver sendReceiver, deliverReceiver;private EditText etSendPhone;private EditText etSendBody;private Button btnSendMsg;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void findView() {etSendPhone = (EditText) findViewById(R.id.et_sendphone);etSendBody = (EditText) findViewById(R.id.et_sendbody);btnSendMsg = (Button) findViewById(R.id.btn_sendmessage);}private void setListener() {btnSendMsg.setOnClickListener(listener);}OnClickListener listener = new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btn_sendmessage:String strDestAddress = etSendPhone.getText().toString();String strMessage = etSendBody.getText().toString();SmsManager smsManager = SmsManager.getDefault();try {Intent itSend = new Intent(SMS_SEND_ACTIOIN);Intent itDeliver = new Intent(SMS_DELIVERED_ACTION);PendingIntent mSendPI = PendingIntent.getBroadcast(getApplicationContext(), 0, itSend, 0);PendingIntent mDeliverPI = PendingIntent.getBroadcast(getApplicationContext(), 0, itDeliver, 0);smsManager.sendTextMessage(strDestAddress, null,strMessage, mSendPI, mDeliverPI);} catch (Exception e) {e.printStackTrace();}break;}}};@Overrideprotected void onResume() {IntentFilter mFilter01;mFilter01 = new IntentFilter(SMS_SEND_ACTIOIN);sendReceiver = new SendMsgReceiver();registerReceiver(sendReceiver, mFilter01);mFilter01 = new IntentFilter(SMS_DELIVERED_ACTION);deliverReceiver = new SendMsgReceiver();registerReceiver(deliverReceiver, mFilter01);super.onResume();}@Overrideprotected void onPause() {super.onPause();unregisterReceiver(sendReceiver);unregisterReceiver(deliverReceiver);}}public class SendMsgReceiver extends BroadcastReceiver {private Context context;@Overridepublic void onReceive(Context context, Intent intent) {this.context = context;if (intent.getAction().equals(MainActivity.SMS_SEND_ACTIOIN)) {try {switch (getResultCode()) {case MainActivity.RESULT_OK:mMakeTextToast("短信发送成功");break;case SmsManager.RESULT_ERROR_GENERIC_FAILURE:mMakeTextToast("发送短信失败");break;}} catch (Exception e) {e.getStackTrace();}} else if (intent.getAction().equals(MainActivity.SMS_DELIVERED_ACTION)) {try {switch (getResultCode()) {case MainActivity.RESULT_OK:mMakeTextToast("短信到达");break;case SmsManager.RESULT_ERROR_GENERIC_FAILURE:mMakeTextToast("短信未送达");break;}} catch (Exception e) {e.getStackTrace();}}}private void mMakeTextToast(String string) {Toast.makeText(context, string, Toast.LENGTH_SHORT).show();}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><EditTextandroid:id="@+id/et_sendphone"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="10086"android:hint="发送的手机号" /><EditTextandroid:id="@+id/et_sendbody"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="hello world!"android:hint="发送的内容" /><Buttonandroid:id="@+id/btn_sendmessage"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="发送" /></LinearLayout>
//电池电量低的广播 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/btn_startpowerlow"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="启动电池电量低的广播" /><Buttonandroid:id="@+id/btn_cancelpowerlow"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="取消电池电量低的广播" /></LinearLayout>public class PowerLowReceiver extends BroadcastReceiver {@Overridepublic void onReceive(Context arg0, Intent arg1) {if (arg1.getAction().equals(Intent.ACTION_BATTERY_LOW)) {Toast.makeText(arg0, "检测到电池电量低的广播", Toast.LENGTH_SHORT).show();}}}public class MainActivity extends Activity {private Button btnPowerLow;private Button btnCancelPowerLow;private PowerLowReceiver powerLowReceiver;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);powerLowReceiver = new PowerLowReceiver();findView();setListener();}private void findView() {btnPowerLow = (Button) findViewById(R.id.btn_startpowerlow);btnCancelPowerLow = (Button) findViewById(R.id.btn_cancelpowerlow);}private void setListener() {btnPowerLow.setOnClickListener(listener);btnCancelPowerLow.setOnClickListener(listener);}OnClickListener listener = new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btn_startpowerlow:registerReceiver(powerLowReceiver, new IntentFilter(Intent.ACTION_BATTERY_LOW));Toast.makeText(MainActivity.this, "设置电池电量低广播启动已完成",Toast.LENGTH_SHORT).show();break;case R.id.btn_cancelpowerlow:if (powerLowReceiver != null) {unregisterReceiver(powerLowReceiver);Toast.makeText(MainActivity.this, "取消电池电量低广播已完成",Toast.LENGTH_SHORT).show();}break;}}};}
//音乐播放器 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><SeekBarandroid:id="@+id/sb_musicprogress"android:layout_width="match_parent"android:layout_height="wrap_content"/><Buttonandroid:id="@+id/bt_start"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="开始" /><Buttonandroid:id="@+id/btn_stop"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="停止" /></LinearLayout>public class MusicService extends Service {private MediaPlayer mPlayer;private Intent broadCastCurrentIntent;private Intent broadCastTotalIntent;@Overridepublic IBinder onBind(Intent arg0) {return null;}@Overridepublic void onCreate() {Toast.makeText(this, "MusicSevice onCreate()", Toast.LENGTH_SHORT).show();mPlayer = MediaPlayer.create(getApplicationContext(), R.raw.music);broadCastCurrentIntent = new Intent(MainActivity.ACTION_START_UPDATE_PROGRESS);broadCastTotalIntent = new Intent(MainActivity.ACTION_START_TOTAL_PROGRESS);super.onCreate();}@Overridepublic int onStartCommand(final Intent intent, int flags, int startId) {Toast.makeText(this, "MusicSevice onStart()", Toast.LENGTH_SHORT).show();if (intent.getBooleanExtra("musicstate", true)) {mPlayer.start();broadCastTotalIntent.putExtra("TotalPosition",mPlayer.getDuration());sendBroadcast(broadCastTotalIntent);new Thread(new Runnable() {@Overridepublic void run() {while (mPlayer.getCurrentPosition() <= mPlayer.getDuration()) {broadCastCurrentIntent.putExtra("CurrentPosition",mPlayer.getCurrentPosition());sendBroadcast(broadCastCurrentIntent);try {Thread.sleep(500);} catch (InterruptedException e) {e.printStackTrace();}}}}).start();} else {mPlayer.stop();}return super.onStartCommand(intent, flags, startId);}}public class MainActivity extends Activity {public static String ACTION_START_UPDATE_PROGRESS = "update_progress";public static String ACTION_START_TOTAL_PROGRESS = "total_progress";private SeekBar sbMusicProgress;private Button btnStart;private Button btnStop;private Intent serviceIntent;private MusicBordcastReceiver musicBordcastReceiver;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();serviceIntent = new Intent(this, MusicService.class);musicBordcastReceiver = new MusicBordcastReceiver();}private void findView() {sbMusicProgress = (SeekBar) findViewById(R.id.sb_musicprogress);btnStop = (Button) findViewById(R.id.btn_stop);btnStart = (Button) findViewById(R.id.bt_start);}private void setListener() {btnStart.setOnClickListener(listener);btnStop.setOnClickListener(listener);}OnClickListener listener = new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.bt_start:serviceIntent.putExtra("musicstate", true);startService(serviceIntent);break;case R.id.btn_stop:serviceIntent.putExtra("musicstate", false);startService(serviceIntent);break;}}};private class MusicBordcastReceiver extends BroadcastReceiver {@Overridepublic void onReceive(Context context, Intent intent) {if (intent.getAction().equals(ACTION_START_UPDATE_PROGRESS)) {sbMusicProgress.setProgress(intent.getIntExtra("CurrentPosition", 0));}if (intent.getAction().equals(ACTION_START_TOTAL_PROGRESS)) {sbMusicProgress.setMax(intent.getIntExtra("TotalPosition", 0));}}}@Overrideprotected void onResume() {if (musicBordcastReceiver == null) {musicBordcastReceiver = new MusicBordcastReceiver();}IntentFilter intentFilter = new IntentFilter();intentFilter.addAction(ACTION_START_UPDATE_PROGRESS);intentFilter.addAction(ACTION_START_TOTAL_PROGRESS);registerReceiver(musicBordcastReceiver, intentFilter);super.onResume();}@Overrideprotected void onStop() {unregisterReceiver(musicBordcastReceiver);super.onStop();}}
Android的网络编程
网络请求
//在线天气查询 public class MainActivity extends Activity {private TextView mTvShow;private EditText mEtInPut; private Button mBtn; private ProgressBar mProgressBar; private Handler mHandler = new Handler() {@Overridepublic void handleMessage(Message msg) {mProgressBar.setVisibility(View.GONE);mTvShow.setText(mReturnConnection);super.handleMessage(msg);}};private String mReturnConnection;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);setTitle("POST天气查询");findView();setListener();}private void findView() {mBtn = (Button) findViewById(R.id.btn);mEtInPut = (EditText) findViewById(R.id.et);mTvShow = (TextView) findViewById(R.id.tv_show);mProgressBar = (ProgressBar) findViewById(R.id.progressBar);}private void setListener() {mBtn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {mProgressBar.setVisibility(View.VISIBLE);new Thread() {@Overridepublic void run() {dopost(mEtInPut.getText().toString());mHandler.sendEmptyMessage(0);super.run();}}.start();}});}private void dopost(String val) {DefaultHttpClient client = new DefaultHttpClient();HttpPost httpPost = new HttpPost("http://webservice.webxml.com.cn/WebServices/WeatherWS.asmx/getWeather");List<NameValuePair> params = new ArrayList<NameValuePair>();params.add(new BasicNameValuePair("theCityCode", val));params.add(new BasicNameValuePair("theUserID", ""));try {UrlEncodedFormEntity p_entity = new UrlEncodedFormEntity(params,"utf-8");httpPost.setEntity(p_entity);HttpResponse response = client.execute(httpPost);if (response.getStatusLine().getStatusCode() == 200) {mReturnConnection = EntityUtils.toString(response.getEntity());} else {mReturnConnection = "Error Response: "+ response.getStatusLine().toString();}} catch (IllegalStateException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}}<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/RelativeLayout1"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"tools:context=".MainActivity" ><EditTextandroid:id="@+id/et"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_alignParentLeft="true"android:layout_alignParentTop="true"android:text="石家庄" /><Buttonandroid:id="@+id/btn"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_alignParentLeft="true"android:layout_below="@+id/et"android:text="POST提交，查询天气" /><TextViewandroid:id="@+id/tv_show"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentLeft="true"android:layout_below="@+id/btn" /><ProgressBarandroid:id="@+id/progressBar"style="?android:attr/progressBarStyleLarge"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_centerHorizontal="true"android:layout_centerVertical="true"android:visibility="gone" /></RelativeLayout>
//在线百度搜索 public class MainActivity extends Activity {private TextView mTvShow; private EditText mEtInPut; private Button mBtn; private ProgressBar mProgressBar; private Handler mHandler = new Handler() {@Overridepublic void handleMessage(Message msg) {mProgressBar.setVisibility(View.GONE);mTvShow.setText(mReturnConnection);super.handleMessage(msg);}};private String mReturnConnection;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void findView() {mBtn = (Button) findViewById(R.id.btn);mEtInPut = (EditText) findViewById(R.id.et);mTvShow = (TextView) findViewById(R.id.tv_show);mProgressBar = (ProgressBar) findViewById(R.id.progressBar);}private void setListener() {mBtn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {mProgressBar.setVisibility(View.VISIBLE);new Thread() {@Overridepublic void run() {doGet();mHandler.sendEmptyMessage(0);super.run();}}.start();}});}public void doGet() {BufferedReader in = null;String URL = "http://www.baidu.com/s?wd="+ mEtInPut.getText().toString();try {HttpClient client = new DefaultHttpClient();HttpGet request = new HttpGet();request.setURI(new URI(URL));HttpResponse response = client.execute(request);if (response.getStatusLine().getStatusCode() == 200) {mReturnConnection = EntityUtils.toString(response.getEntity());} else {mReturnConnection = "Error Response: "+ response.getStatusLine().toString();}} catch (Exception e) {Log.e("wyl", e.toString());} finally {if (in != null) {try {in.close();} catch (IOException ioe) {Log.e("wyl", ioe.toString());}}}}}<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/RelativeLayout1"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"tools:context=".MainActivity" ><EditTextandroid:id="@+id/et"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_alignParentLeft="true"android:layout_alignParentTop="true"android:text="石家庄" /><Buttonandroid:id="@+id/btn"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_alignParentLeft="true"android:layout_below="@+id/et"android:text="get提交，百度搜索" /><TextViewandroid:id="@+id/tv_show"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentLeft="true"android:layout_below="@+id/btn" /><ProgressBarandroid:id="@+id/progressBar"style="?android:attr/progressBarStyleLarge"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_centerHorizontal="true"android:layout_centerVertical="true"android:visibility="gone" /></RelativeLayout>
//网络图片下载器 public class FileUtils {private String SDPATH;public String getSDPATH() {return SDPATH;}public FileUtils() {SDPATH = Environment.getExternalStorageDirectory() + "/";}public File creatSDFile(String fileName) throws IOException {File file = new File(SDPATH + fileName);file.createNewFile();return file;}public File creatSDDir(String dirName) {File dir = new File(SDPATH + dirName);dir.mkdir();return dir;}public boolean isFileExist(String fileName){File file = new File(SDPATH + fileName);return file.exists();}public File write2SDFromInput(String path,String fileName,InputStream input){File file = null;OutputStream output = null;try{creatSDDir(path);file = creatSDFile(path + fileName);output = new FileOutputStream(file);byte buffer [] = new byte[4 * 1024];while((input.read(buffer)) != -1){output.write(buffer);}output.flush();}catch(Exception e){e.printStackTrace();}finally{try{output.close();}catch(Exception e){e.printStackTrace();}}return file;}}public class MainActivity extends Activity {private Button mBtn; private EditText mEt;private Handler mHandler = new Handler() {@Overridepublic void handleMessage(Message msg) {if (msg.what == 0) {Toast.makeText(MainActivity.this, "下载成功！",Toast.LENGTH_SHORT).show();} else if (msg.what == 1) {Toast.makeText(MainActivity.this, "已有文件！",Toast.LENGTH_SHORT).show();} else if (msg.what == -1) {Toast.makeText(MainActivity.this, "下载失败！",Toast.LENGTH_SHORT).show();}super.handleMessage(msg);}};@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void findView() {mBtn = (Button) findViewById(R.id.btn);mEt = (EditText)findViewById(R.id.et);}private void setListener() {mBtn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {new Thread() {@Overridepublic void run() {Message msg = new Message();HttpDownloader httpDownLoader = new HttpDownloader();msg.what = httpDownLoader.downfile(mEt.getText().toString(),"test/", "test1.jpg");mHandler.sendMessage(msg);super.run();}}.start();}});}public class HttpDownloader {private URL url = null;FileUtils fileUtils = new FileUtils();public int downfile(String urlStr, String path, String fileName) {if (fileUtils.isFileExist(path + fileName)) {return 1;} else {try {InputStream input = null;input = getInputStream(urlStr);File resultFile = fileUtils.write2SDFromInput(path,fileName, input);if (resultFile == null) {return -1;}} catch (IOException e) {e.printStackTrace();}}return 0;}public InputStream getInputStream(String urlStr) throws IOException {InputStream is = null;try {url = new URL(urlStr);HttpURLConnection urlConn = (HttpURLConnection) url.openConnection();is = urlConn.getInputStream();} catch (MalformedURLException e) {e.printStackTrace();}return is;}}}<LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="wrap_content"android:paddingLeft="5dip"android:paddingRight="5dip"android:orientation="vertical"> <ProgressBarandroid:id="@+id/update_progress"android:layout_width="fill_parent"android:layout_height="wrap_content"style="?android:attr/progressBarStyleHorizontal"/><TextView android:id="@+id/update_progress_text"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="right"android:textColor="@android:color/white"/></LinearLayout><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/RelativeLayout1"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"tools:context=".MainActivity" ><EditTextandroid:id="@+id/et"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_alignParentLeft="true"android:hint="请输入需要下载的网络图片地址"/><Buttonandroid:id="@+id/btn"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_alignParentLeft="true"android:text="下载网络图片" /></LinearLayout>
//文件上传 public class MainActivity extends Activity {private String newName = "up.png";private String uploadFile = "/sdcard/up.png";private String actionUrl = "http://192.168.0.71:8086/HelloWord/myForm";private TextView mText1;private TextView mText2;private Button mButton;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void findView() {mText1 = (TextView) findViewById(R.id.myText1);mText1.setText(uploadFile);mText2 = (TextView) findViewById(R.id.myText2);mText2.setText(actionUrl);mButton = (Button) findViewById(R.id.myButton);}private void setListener() {mButton.setOnClickListener(new View.OnClickListener() {public void onClick(View v) {new Thread(){@Overridepublic void run() {uploadFile();super.run();}}.start();}});}private void uploadFile() {String end = "\r\n";String twoHyphens = "--";String boundary = "*****";try {URL url = new URL(actionUrl);HttpURLConnection con = (HttpURLConnection) url.openConnection();con.setDoInput(true);con.setDoOutput(true);con.setUseCaches(false);con.setRequestMethod("POST");con.setRequestProperty("Connection", "Keep-Alive");con.setRequestProperty("Charset", "UTF-8");con.setRequestProperty("Content-Type","multipart/form-data;boundary=" + boundary);DataOutputStream ds = new DataOutputStream(con.getOutputStream());ds.writeBytes(twoHyphens + boundary + end);ds.writeBytes("Content-Disposition: form-data; "+ "name=\"file1\";filename=\"" + newName + "\"" + end);ds.writeBytes(end);FileInputStream fStream = new FileInputStream(uploadFile);int bufferSize = 1024;byte[] buffer = new byte[bufferSize];int length = -1;while ((length = fStream.read(buffer)) != -1) {ds.write(buffer, 0, length);}ds.writeBytes(end);ds.writeBytes(twoHyphens + boundary + twoHyphens + end);fStream.close();ds.flush();InputStream is = con.getInputStream();int ch;StringBuffer b = new StringBuffer();while ((ch = is.read()) != -1) {b.append((char) ch);}showDialog("上传成功" + b.toString().trim());ds.close();} catch (Exception e) {showDialog("上传失败" + e);}}private void showDialog(String mess) {new AlertDialog.Builder(MainActivity.this).setTitle("Message").setMessage(mess).setNegativeButton("确定", new DialogInterface.OnClickListener() {public void onClick(DialogInterface dialog, int which) {}}).show();}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/LinearLayout1"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"tools:context=".MainActivity" ><TextViewandroid:id="@+id/myText1"android:layout_width="match_parent"android:layout_height="wrap_content" /><TextViewandroid:id="@+id/myText2"android:layout_width="match_parent"android:layout_height="wrap_content" /><Buttonandroid:id="@+id/myButton"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="上传文件" /></LinearLayout>
//异步图片加载 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/RelativeLayout1"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"tools:context=".MainActivity" ><Buttonandroid:id="@+id/btn_picTask"android:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_alignParentLeft="true"android:layout_alignParentTop="true"android:text="异步下载图片" /><ImageViewandroid:id="@+id/image"android:layout_width="match_parent"android:layout_height="match_parent"android:layout_alignParentLeft="true"android:layout_below="@+id/btn_picTask"android:padding="2dp"android:scaleType="centerInside" /></RelativeLayout>public class AsyncPicTask extends AsyncTask<Object, Integer, Bitmap> {private ImageView iv_pic;@Overrideprotected Bitmap doInBackground(Object... params) {Bitmap bitmap = null;iv_pic = (ImageView) params[0];try {URL url = new URL((String) params[1]);HttpURLConnection conn = (HttpURLConnection) url.openConnection();conn.setDoInput(true);conn.connect();InputStream inputStream = conn.getInputStream();bitmap = BitmapFactory.decodeStream(inputStream);inputStream.close();} catch (MalformedURLException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}return bitmap;}@Overrideprotected void onPostExecute(Bitmap result) {if (result != null) {iv_pic.setImageBitmap(result);}}}public class MainActivity extends Activity {private static final String URL = "http://pica.nipic.com/2008-07-01/200871134114809_2.jpg";private Button mBtnPicTask;private ImageView mIvPic;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void findView() {mBtnPicTask = (Button) findViewById(R.id.btn_picTask);mIvPic = (ImageView) findViewById(R.id.image);}private void setListener() {mBtnPicTask.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {AsyncPicTask picTask = new AsyncPicTask();picTask.execute(mIvPic, URL);}});}}
//UDP网络通信 public class MainActivity extends Activity {private EditText mEtMsg = null;private Button mBtnSend = null;private TextView mTvInfo = null;private String mStrResult = null;private Handler mHandler = new Handler() {@Overridepublic void handleMessage(Message msg) {super.handleMessage(msg);mTvInfo.setText(mStrResult);}};@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);mEtMsg=(EditText)findViewById(R.id.msg_et);mBtnSend=(Button)findViewById(R.id.send_bt);mTvInfo=(TextView)findViewById(R.id.info_tv);ExecutorService exec=Executors.newCachedThreadPool();UDPServer server=new UDPServer();exec.execute(server);mBtnSend.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {new Thread(){public void run() {UDPClient client=new UDPClient(mEtMsg.getText().toString());mStrResult = client.send();mHandler.sendEmptyMessage(0);super.run();}}.start();}});}}public class UDPClient {private static final int SERVER_PORT = 6000;private DatagramSocket mDSocket = null;private String mMsg;public UDPClient(String msg) {super();this.mMsg = msg;}public String send() {StringBuilder sb = new StringBuilder();InetAddress local = null;try {local = InetAddress.getByName("localhost");sb.append("已找到服务器,连接中...").append("/n");} catch (UnknownHostException e) {sb.append("未找到服务器.").append("/n");e.printStackTrace();}try {mDSocket = new DatagramSocket(); sb.append("正在连接服务器...").append("/n");} catch (SocketException e) {e.printStackTrace();sb.append("服务器连接失败.").append("/n");}int msg_len = mMsg == null ? 0 : mMsg.length();DatagramPacket dPacket = new DatagramPacket(mMsg.getBytes(), msg_len,local, SERVER_PORT);try {mDSocket.send(dPacket);sb.append("消息发送成功!").append("/n");} catch (IOException e) {e.printStackTrace();sb.append("消息发送失败.").append("/n");}mDSocket.close();return sb.toString();}}public class UDPServer implements Runnable {private static final int PORT = 6000;private byte[] msg = new byte[1024];private boolean life = true;public UDPServer() {}public boolean isLife() {return life;}public void setLife(boolean life) {this.life = life;}@Overridepublic void run() {DatagramSocket dSocket = null;DatagramPacket dPacket = new DatagramPacket(msg, msg.length);try {dSocket = new DatagramSocket(PORT);while (life) {try {dSocket.receive(dPacket);Log.i("msg sever received", new String(dPacket.getData()));} catch (IOException e) {e.printStackTrace();}}} catch (SocketException e) {e.printStackTrace();}}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/LinearLayout1"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"tools:context=".MainActivity" ><EditTextandroid:id="@+id/msg_et"android:layout_width="match_parent"android:layout_height="wrap_content" /><Buttonandroid:id="@+id/send_bt"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="发送" /><TextViewandroid:id="@+id/info_tv"android:layout_width="wrap_content"android:layout_height="wrap_content" /></LinearLayout>
//在线音乐播放 public class MainActivity extends Activity {private Button mBtnPause; private Button mBtnPlayUrl; private Button mBtnStop; private SeekBar mSkbProgress;private Player mPlayer; @Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();mPlayer = new Player(mSkbProgress);}private void findView() {mBtnPlayUrl = (Button) this.findViewById(R.id.btnPlayUrl);mBtnPause = (Button) this.findViewById(R.id.btnPause);mBtnStop = (Button) this.findViewById(R.id.btnStop);mSkbProgress = (SeekBar) this.findViewById(R.id.skbProgress);}private void setListener() {mBtnPlayUrl.setOnClickListener(new ClickEvent());mBtnPause.setOnClickListener(new ClickEvent());mBtnStop.setOnClickListener(new ClickEvent());mSkbProgress.setOnSeekBarChangeListener(new SeekBarChangeEvent());}class ClickEvent implements OnClickListener {@Overridepublic void onClick(View arg0) {if (arg0 == mBtnPause) {mPlayer.pause();} else if (arg0 == mBtnPlayUrl) {String url = "http://m.zonse.net/music/data/upload/12532622.mp3";mPlayer.playUrl(url);} else if (arg0 == mBtnStop) {mPlayer.stop();}}}class SeekBarChangeEvent implements SeekBar.OnSeekBarChangeListener {int progress;@Overridepublic void onProgressChanged(SeekBar seekBar, int progress,boolean fromUser) {this.progress = progress * mPlayer.mMediaPlayer.getDuration()/ seekBar.getMax();}@Overridepublic void onStartTrackingTouch(SeekBar seekBar) {}@Overridepublic void onStopTrackingTouch(SeekBar seekBar) {mPlayer.mMediaPlayer.seekTo(progress);}}}public class Player implements OnBufferingUpdateListener,OnCompletionListener,MediaPlayer.OnPreparedListener {public MediaPlayer mMediaPlayer;private SeekBar mSkbProgress; private Timer mTimer = new Timer();public Player(SeekBar skbProgress) {this.mSkbProgress = skbProgress;try {mMediaPlayer = new MediaPlayer();mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC); mMediaPlayer.setOnBufferingUpdateListener(this); mMediaPlayer.setOnPreparedListener(this); } catch (Exception e) {Log.e("mediaPlayer", "error", e);}mTimer.schedule(mTimerTask, 0, 1000);}TimerTask mTimerTask = new TimerTask() {@Overridepublic void run() {if (mMediaPlayer == null)return;if (mMediaPlayer.isPlaying() && mSkbProgress.isPressed() == false) {handleProgress.sendEmptyMessage(0);}}};Handler handleProgress = new Handler() {public void handleMessage(Message msg) {int position = mMediaPlayer.getCurrentPosition();int duration = mMediaPlayer.getDuration();if (duration > 0) {long pos = mSkbProgress.getMax() * (position / duration);mSkbProgress.setProgress((int) pos);}};};public void play() {mMediaPlayer.start();}public void playUrl(String videoUrl) {try {mMediaPlayer.reset();mMediaPlayer.setDataSource(videoUrl);mMediaPlayer.prepare();} catch (IllegalArgumentException e) {e.printStackTrace();} catch (IllegalStateException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}}public void pause() {mMediaPlayer.pause();}public void stop() {if (mMediaPlayer != null) {mMediaPlayer.stop();mMediaPlayer.release();mMediaPlayer = null;}}@Overridepublic void onPrepared(MediaPlayer arg0) {arg0.start();Log.e("mediaPlayer", "onPrepared");}@Overridepublic void onCompletion(MediaPlayer arg0) {Log.e("mediaPlayer", "onCompletion");}@Overridepublic void onBufferingUpdate(MediaPlayer arg0, int bufferingProgress) {mSkbProgress.setSecondaryProgress(bufferingProgress);int currentProgress = mSkbProgress.getMax()* mMediaPlayer.getCurrentPosition()/ mMediaPlayer.getDuration();Log.e(currentProgress + "% play", bufferingProgress + "% buffer");}}<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent" ><LinearLayoutandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_gravity="top"android:orientation="vertical" ><LinearLayoutandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="center_horizontal"android:layout_marginTop="4.0dip"android:orientation="horizontal" ><Buttonandroid:id="@+id/btnPlayUrl"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="播放网络音频" ></Button><Buttonandroid:id="@+id/btnPause"android:layout_width="80dip"android:layout_height="wrap_content"android:text="暂停" ></Button><Buttonandroid:id="@+id/btnStop"android:layout_width="80dip"android:layout_height="wrap_content"android:text="停止" ></Button></LinearLayout><LinearLayoutandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_marginBottom="20dip"android:orientation="horizontal" ><SeekBarandroid:id="@+id/skbProgress"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="center_vertical"android:layout_weight="1.0"android:max="100"android:paddingLeft="10dip"android:paddingRight="10dip" ></SeekBar></LinearLayout></LinearLayout></FrameLayout>
//在线视频播放 public class MainActivity extends Activity {private SurfaceView mSurfaceView; private Button mBtnPause; private Button mBtnPlayUrl;private Button btnStop; private SeekBar mSkbProgress;private Player mPlayer; @Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);findView();setListener();mPlayer = new Player(mSurfaceView, mSkbProgress);}private void findView() {mSurfaceView = (SurfaceView) this.findViewById(R.id.surfaceView1);mBtnPlayUrl = (Button) this.findViewById(R.id.btnPlayUrl);btnStop = (Button) this.findViewById(R.id.btnStop);mSkbProgress = (SeekBar) this.findViewById(R.id.skbProgress);}private void setListener() {mBtnPlayUrl.setOnClickListener(new ClickEvent());mBtnPause = (Button) this.findViewById(R.id.btnPause);mBtnPause.setOnClickListener(new ClickEvent());btnStop.setOnClickListener(new ClickEvent());mSkbProgress.setOnSeekBarChangeListener(new SeekBarChangeEvent());}class ClickEvent implements OnClickListener {@Overridepublic void onClick(View arg0) {if (arg0 == mBtnPause) {mPlayer.pause();} else if (arg0 == mBtnPlayUrl) {String url = "http://www.baidupcs.com/file/9af1c0bb35d859d2a12d662e9f1e3a2a?xcode=7b41ea4ad01cdb81b102251452344002&fid=4228993954-250528-1406389171&time=1372147996&sign=FDTAXER-DCb740ccc5511e5e8fedcff06b081203-Gkxa8Rae7Lv1FQym0dJ8g66%2BuYg%3D&to=wb&fm=N,B,M&expires=8h&rt=sh&r=409944198&logid=2845104262&sh=1";mPlayer.playUrl(url);} else if (arg0 == btnStop) {mPlayer.stop();}}}class SeekBarChangeEvent implements SeekBar.OnSeekBarChangeListener {int progress;@Overridepublic void onProgressChanged(SeekBar seekBar, int progress,boolean fromUser) {this.progress = progress * mPlayer.mMediaPlayer.getDuration()/ seekBar.getMax();}@Overridepublic void onStartTrackingTouch(SeekBar seekBar) {}@Overridepublic void onStopTrackingTouch(SeekBar seekBar) {mPlayer.mMediaPlayer.seekTo(progress);}}}public class Player implements OnBufferingUpdateListener, OnCompletionListener,MediaPlayer.OnPreparedListener, SurfaceHolder.Callback {private int videoWidth;private int videoHeight;public MediaPlayer mMediaPlayer; private SurfaceHolder mSurfaceHolder;private SeekBar mSkbProgress;private Timer mTimer = new Timer();public Player(SurfaceView surfaceView, SeekBar skbProgress) {this.mSkbProgress = skbProgress;mSurfaceHolder = surfaceView.getHolder();mSurfaceHolder.addCallback(this);mSurfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);mTimer.schedule(mTimerTask, 0, 1000);}TimerTask mTimerTask = new TimerTask() {@Overridepublic void run() {if (mMediaPlayer == null)return;if (mMediaPlayer.isPlaying() && mSkbProgress.isPressed() == false) {handleProgress.sendEmptyMessage(0);}}};Handler handleProgress = new Handler() {public void handleMessage(Message msg) {int position = mMediaPlayer.getCurrentPosition();int duration = mMediaPlayer.getDuration();if (duration > 0) {long pos = mSkbProgress.getMax() * position / duration;mSkbProgress.setProgress((int) pos);}};};public void play() {mMediaPlayer.start();}public void playUrl(String videoUrl) {try {mMediaPlayer.reset();mMediaPlayer.setDataSource(videoUrl);mMediaPlayer.prepare();} catch (IllegalArgumentException e) {e.printStackTrace();} catch (IllegalStateException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}}public void pause() {mMediaPlayer.pause();}public void stop() {if (mMediaPlayer != null) {mMediaPlayer.stop();mMediaPlayer.release();mMediaPlayer = null;}}@Overridepublic void surfaceChanged(SurfaceHolder arg0, int arg1, int arg2, int arg3) {Log.e("mediaPlayer", "surface changed");}@Overridepublic void surfaceCreated(SurfaceHolder arg0) {try {mMediaPlayer = new MediaPlayer();mMediaPlayer.setDisplay(mSurfaceHolder);mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);mMediaPlayer.setOnBufferingUpdateListener(this);mMediaPlayer.setOnPreparedListener(this);} catch (Exception e) {Log.e("mediaPlayer", "error", e);}}@Overridepublic void surfaceDestroyed(SurfaceHolder arg0) {Log.e("mediaPlayer", "surface destroyed");}@Overridepublic void onPrepared(MediaPlayer arg0) {videoWidth = mMediaPlayer.getVideoWidth();videoHeight = mMediaPlayer.getVideoHeight();if (videoHeight != 0 && videoWidth != 0) {arg0.start();}Log.e("mediaPlayer", "onPrepared");}@Overridepublic void onCompletion(MediaPlayer arg0) {}@Overridepublic void onBufferingUpdate(MediaPlayer arg0, int bufferingProgress) {mSkbProgress.setSecondaryProgress(bufferingProgress);int currentProgress = mSkbProgress.getMax()* mMediaPlayer.getCurrentPosition()/ mMediaPlayer.getDuration();Log.e(currentProgress + "% play", bufferingProgress + "% buffer");}}<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent" ><SurfaceViewandroid:id="@+id/surfaceView1"android:layout_width="fill_parent"android:layout_height="fill_parent" ></SurfaceView><LinearLayoutandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_gravity="bottom"android:orientation="vertical" ><LinearLayoutandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="center_horizontal"android:layout_marginTop="4.0dip"android:orientation="horizontal" ><Buttonandroid:id="@+id/btnPlayUrl"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="播放网络视频" ></Button><Buttonandroid:id="@+id/btnPause"android:layout_width="80dip"android:layout_height="wrap_content"android:text="暂停" ></Button><Buttonandroid:id="@+id/btnStop"android:layout_width="80dip"android:layout_height="wrap_content"android:text="停止" ></Button></LinearLayout><LinearLayoutandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_marginBottom="20dip"android:orientation="horizontal" ><SeekBarandroid:id="@+id/skbProgress"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="center_vertical"android:layout_weight="1.0"android:max="100"android:paddingLeft="10dip"android:paddingRight="10dip" ></SeekBar></LinearLayout></LinearLayout></FrameLayout>
//应用程序在线更新 <LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="wrap_content"android:paddingLeft="5dip"android:paddingRight="5dip"android:orientation="vertical"> <ProgressBarandroid:id="@+id/update_progress"android:layout_width="fill_parent"android:layout_height="wrap_content"style="?android:attr/progressBarStyleHorizontal"/><TextView android:id="@+id/update_progress_text"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="right"android:textColor="@android:color/white"/></LinearLayout><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/RelativeLayout1"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"tools:context=".MainActivity" ><Buttonandroid:id="@+id/btn"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_alignParentLeft="true"android:text="在线更新" /></RelativeLayout>public class UpdateManager {private static final int DOWN_NOSDCARD = 0;private static final int DOWN_UPDATE = 1;private static final int DOWN_OVER = 2;private Context mContext;private Dialog downloadDialog;private ProgressBar mProgress;private TextView mProgressText;private int progress;private Thread downLoadThread;private boolean interceptFlag;private String apkUrl = "http://www.baidupcs.com/file/a8127065267221ea18df2554c2691c95?xcode=102ef5b132f96dff8c55e5d356906108&fid=4228993954-250528-879020187&time=1372165890&sign=FDTAXER-DCb740ccc5511e5e8fedcff06b081203-rCQ8so3ySZDjwU%2FavMB76KCDCw4%3D&to=wb&fm=N,B,G&expires=8h&rt=sh&r=362542044&logid=891789185&sh=1";private String savePath = "";private String apkFilePath = "";private String tmpFilePath = "";private String apkFileSize;private String tmpFileSize;public UpdateManager(Context context) {this.mContext = context;}private Handler mHandler = new Handler() {public void handleMessage(Message msg) {switch (msg.what) {case DOWN_UPDATE:mProgress.setProgress(progress);mProgressText.setText(tmpFileSize + "/" + apkFileSize);break;case DOWN_OVER:downloadDialog.dismiss();installApk();break;case DOWN_NOSDCARD:downloadDialog.dismiss();Toast.makeText(mContext, "无法下载安装文件，请检查SD卡是否挂载", 3000).show();break;}};};public void showDownloadDialog() {AlertDialog.Builder builder = new Builder(mContext);builder.setTitle("正在下载新版本");final LayoutInflater inflater = LayoutInflater.from(mContext);View v = inflater.inflate(R.layout.update_progress, null);mProgress = (ProgressBar) v.findViewById(R.id.update_progress);mProgressText = (TextView) v.findViewById(R.id.update_progress_text);builder.setView(v);builder.setNegativeButton("取消", new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {dialog.dismiss();interceptFlag = true;}});builder.setOnCancelListener(new OnCancelListener() {@Overridepublic void onCancel(DialogInterface dialog) {dialog.dismiss();interceptFlag = true;}});downloadDialog = builder.create();downloadDialog.setCanceledOnTouchOutside(false);downloadDialog.show();downloadApk();}private Runnable mdownApkRunnable = new Runnable() {@Overridepublic void run() {try {String apkName = "wyl_" + ".apk";String tmpApk = "wyl_" + ".tmp";String storageState = Environment.getExternalStorageState();if (storageState.equals(Environment.MEDIA_MOUNTED)) {savePath = Environment.getExternalStorageDirectory().getAbsolutePath() + "/Update/";File file = new File(savePath);if (!file.exists()) {file.mkdirs();}apkFilePath = savePath + apkName;tmpFilePath = savePath + tmpApk;}if (apkFilePath == null || apkFilePath == "") {mHandler.sendEmptyMessage(DOWN_NOSDCARD);return;}File ApkFile = new File(apkFilePath);if (ApkFile.exists()) {downloadDialog.dismiss();installApk();return;}File tmpFile = new File(tmpFilePath);FileOutputStream fos = new FileOutputStream(tmpFile);URL url = new URL(apkUrl);HttpURLConnection conn = (HttpURLConnection) url.openConnection();conn.connect();int length = conn.getContentLength();InputStream is = conn.getInputStream();DecimalFormat df = new DecimalFormat("0.00");apkFileSize = df.format((float) length / 1024 / 1024) + "MB";int count = 0;byte buf[] = new byte[1024];do {int numread = is.read(buf);count += numread;tmpFileSize = df.format((float) count / 1024 / 1024) + "MB";progress = (int) (((float) count / length) * 100);mHandler.sendEmptyMessage(DOWN_UPDATE);if (numread <= 0) {if (tmpFile.renameTo(ApkFile)) {mHandler.sendEmptyMessage(DOWN_OVER);}break;}fos.write(buf, 0, numread);} while (!interceptFlag);fos.close();is.close();} catch (MalformedURLException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}}};private void downloadApk() {downLoadThread = new Thread(mdownApkRunnable);downLoadThread.start();}private void installApk() {File apkfile = new File(apkFilePath);if (!apkfile.exists()) {return;}Intent i = new Intent(Intent.ACTION_VIEW);i.setDataAndType(Uri.parse("file://" + apkfile.toString()),"application/vnd.android.package-archive");mContext.startActivity(i);}}public class MainActivity extends Activity {private Button mBtn; @Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void findView() {mBtn = (Button) findViewById(R.id.btn);}private void setListener() {mBtn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {new UpdateManager(MainActivity.this).showDownloadDialog();}});}}
数据格式解析
//DOM方式解析XML <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/LinearLayout1"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"tools:context=".MainActivity" ><TextViewandroid:id="@+id/textview"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="XML文件解析!" /><Buttonandroid:id="@+id/btnDom"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="DOM方式解析xml" /></LinearLayout>public class DOMPersonService {public static List<Person> readXml(InputStream inStream)throws ParserConfigurationException, SAXException, IOException {List<Person> persons = new ArrayList<Person>();DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();DocumentBuilder builder = factory.newDocumentBuilder();Document document = builder.parse(inStream);Element root = document.getDocumentElement();NodeList nodes = root.getElementsByTagName("person");for (int i = 0; i < nodes.getLength(); i++) {Element personElement = (Element) nodes.item(i);Person person = new Person();person.setId(Integer.valueOf(personElement.getAttribute("id")));NodeList childNodes = personElement.getChildNodes();for (int j = 0; j < childNodes.getLength(); j++) {Node childNode = (Node) childNodes.item(j);if (childNode.getNodeType() == Node.ELEMENT_NODE) {Element childElement = (Element) childNode;if ("name".equals(childElement.getNodeName())) {person.setName(childElement.getFirstChild().getNodeValue());} else if ("age".equals(childElement.getNodeName())) {person.setAge(new Short(childElement.getFirstChild().getNodeValue()));}}}persons.add(person);}return persons;}}public class MainActivity extends Activity {private TextView mTvShow; private Button mBtnDom; @Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {mBtnDom.setOnClickListener(myListener);}private void findView() {mTvShow = (TextView) findViewById(R.id.textview);mBtnDom = (Button) findViewById(R.id.btnDom);}private OnClickListener myListener = new OnClickListener() {@Overridepublic void onClick(View v) {InputStream inputStream = MainActivity.class.getClassLoader().getResourceAsStream("people.xml");List<Person> persons = null;mTvShow.setText("");switch (v.getId()) {case R.id.btnDom: mTvShow.setText("DOM:");try {persons = DOMPersonService.readXml(inputStream);} catch (ParserConfigurationException e) {e.printStackTrace();} catch (SAXException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}break;default:break;}for (Person person : persons) {mTvShow.setText(mTvShow.getText().toString() + "\n" + person.toString());}}};}public class Person {private Integer id;private String name;private Short age;public Person() {super();}public Person(Integer id, String name, Short age) {this.id = id;this.name = name;this.age = age;}public Integer getId() {return id;}public void setId(Integer id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}public Short getAge() {return age;}public void setAge(Short age) {this.age = age;}@Overridepublic String toString() {return "id = " + id + "name = " + name + "age = " + age;}}<persons xmlns:pre="http://www.baidu.com"><person id="001"><name>coolszy</name><age>22</age></person><person id="002"><name>kuka</name><age>23</age></person> <person id="003"><name>wyl</name><age>30</age></person> </persons>
//SAX方式解析XML <persons xmlns:pre="http://www.baidu.com"><person id="001"><name>coolszy</name><age>22</age></person><person id="002"><name>kuka</name><age>23</age></person> <person id="003"><name>wyl</name><age>30</age></person> </persons><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/LinearLayout1"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"tools:context=".MainActivity" ><TextViewandroid:id="@+id/textview"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="XML文件解析!" /><Buttonandroid:id="@+id/btnSAX"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="SAX方式解析xml" /></LinearLayout>public class XMLContentHandler extends DefaultHandler {public static final String TAG = "XMLContentHandler";private List<Person> persons;private Person person;private String preTag;public List<Person> getPersons() {return persons;}@Overridepublic void startDocument() throws SAXException {super.startDocument();persons = new ArrayList<Person>();Log.i(TAG, "开始解析...");}@Overridepublic void startElement(String uri, String localName, String qName,Attributes attributes) throws SAXException {super.startElement(uri, localName, qName, attributes);if ("person".equals(localName)) {person = new Person();person.setId(new Integer(attributes.getValue("id")));}preTag = localName;Log.i(TAG, "解析元素：" + localName);}@Overridepublic void characters(char[] ch, int start, int length)throws SAXException {super.characters(ch, start, length);if (person != null) {String data = new String(ch, start, length);if ("name".equals(preTag)) {person.setName(data);} else if ("age".equals(preTag)) {person.setAge(new Short(data));}}Log.i(TAG, "解析的内容:" + new String(ch, start, length));}@Overridepublic void endElement(String uri, String localName, String qName)throws SAXException {super.endElement(uri, localName, qName);if ("person".equals(localName) && person != null) {persons.add(person);person = null;}preTag = null;Log.i(TAG, localName + "解析完毕");}@Overridepublic void endDocument() throws SAXException {super.endDocument();Log.i(TAG, "文档解析完毕");}}public class SAXPersonService {public static List<Person> readXml(InputStream inStream) throws ParserConfigurationException, SAXException, IOException{SAXParserFactory spf = SAXParserFactory.newInstance();SAXParser saxParser = spf.newSAXParser();XMLContentHandler handler = new XMLContentHandler();saxParser.parse(inStream, handler);inStream.close();return handler.getPersons();}}public class Person {private Integer id;private String name;private Short age;public Person() {super();}public Person(Integer id, String name, Short age) {this.id = id;this.name = name;this.age = age;}public Integer getId() {return id;}public void setId(Integer id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}public Short getAge() {return age;}public void setAge(Short age) {this.age = age;}@Overridepublic String toString() {return "id = " + id + "name = " + name + "age = " + age;}}public class MainActivity extends Activity {private TextView mTvShow; private Button mBtnSax; @Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {mBtnSax.setOnClickListener(myListener);}private void findView() {mTvShow = (TextView) findViewById(R.id.textview);mBtnSax = (Button) findViewById(R.id.btnSAX);}private OnClickListener myListener = new OnClickListener() {@Overridepublic void onClick(View v) {InputStream inputStream = MainActivity.class.getClassLoader().getResourceAsStream("people.xml");List<Person> persons = null;mTvShow.setText("");switch (v.getId()) {case R.id.btnSAX: mTvShow.setText("SAX:");try {persons = SAXPersonService.readXml(inputStream);} catch (ParserConfigurationException e) {e.printStackTrace();} catch (SAXException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}break;default:break;}for (Person person : persons) {mTvShow.setText(mTvShow.getText().toString() + "\n" + person.toString());}}};}
//PULL方式解析XML <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/LinearLayout1"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"tools:context=".MainActivity" ><TextViewandroid:id="@+id/textview"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="XML文件解析!" /><Buttonandroid:id="@+id/btnPull"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="Pull方式解析xml" /></LinearLayout>public class PullPersonService {public static List<Person> readXml(InputStream inStream)throws XmlPullParserException, IOException {List<Person> persons = null;XmlPullParser parser = Xml.newPullParser();parser.setInput(inStream, "UTF-8"); int eventCode = parser.getEventType();Person person = null;while (eventCode != XmlPullParser.END_DOCUMENT) {switch (eventCode) {case XmlPullParser.START_DOCUMENT:persons = new ArrayList<Person>();break;case XmlPullParser.START_TAG:if("person".equals(parser.getName())){person = new Person();person.setId(new Integer(parser.getAttributeValue(0)));}else if(null != person){if("name".equals(parser.getName())){person.setName(parser.nextText());}else if("age".equals(parser.getName())){ person.setAge(new Short(parser.nextText()));}}break;case XmlPullParser.END_TAG:if("person".equals(parser.getName())&&person != null){persons.add(person);person = null;}break;}eventCode = parser.next();}return persons;}}public class Person {private Integer id;private String name;private Short age;public Person() {super();}public Person(Integer id, String name, Short age) {this.id = id;this.name = name;this.age = age;}public Integer getId() {return id;}public void setId(Integer id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}public Short getAge() {return age;}public void setAge(Short age) {this.age = age;}@Overridepublic String toString() {return "id = " + id + "name = " + name + "age = " + age;}}public class MainActivity extends Activity {private TextView mTvShow; private Button mBtnPull;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void setListener() {mBtnPull.setOnClickListener(myListener);}private void findView() {mTvShow = (TextView) findViewById(R.id.textview);mBtnPull = (Button) findViewById(R.id.btnPull);}private OnClickListener myListener = new OnClickListener() {@Overridepublic void onClick(View v) {InputStream inputStream = MainActivity.class.getClassLoader().getResourceAsStream("people.xml");List<Person> persons = null;mTvShow.setText("");switch (v.getId()) {case R.id.btnPull: mTvShow.setText("PULL:");try {persons = PullPersonService.readXml(inputStream);} catch (XmlPullParserException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}break;default:break;}for (Person person : persons) {mTvShow.setText(mTvShow.getText().toString() + "\n" + person.toString());}}};}<persons xmlns:pre="http://www.baidu.com"><person id="001"><name>coolszy</name><age>22</age></person><person id="002"><name>kuka</name><age>23</age></person> <person id="003"><name>wyl</name><age>30</age></person> </persons>
//内置JSON解析 public class MainActivity extends Activity {private String json1 = "{\"url\":\"http://www.baidu.com\"}";private String json2 = "{\"name\":\"android\",\"version\":\"2.3.1\"}";private String jsonArray1 = "{\"namber\":[1,2,3]}";private String jsonArray2 = "{\"number\":[[zhangsan,18],[lisi,20],[wangwu,23]]}";private String jsonObj = "{\"mobile\":[{\"name\":\"android\"},{\"name\":\"iphone\"}]}";private Button btn1; private Button btn2; private Button btn3; private Button btn4; private Button btn5; private TextView tv;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void findView() {btn1 = (Button) findViewById(R.id.btn1);btn2 = (Button) findViewById(R.id.btn2);btn3 = (Button) findViewById(R.id.btn3);btn4 = (Button) findViewById(R.id.btn4);btn5 = (Button) findViewById(R.id.btn5);tv = (TextView) findViewById(R.id.tv);}private void setListener() {btn1.setOnClickListener(mylistener);btn2.setOnClickListener(mylistener);btn3.setOnClickListener(mylistener);btn4.setOnClickListener(mylistener);btn5.setOnClickListener(mylistener);}private OnClickListener mylistener = new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btn1: JSONObject demoJson;String url;try {demoJson = new JSONObject(json1);url = demoJson.getString("url");tv.setText("url:" + url);} catch (JSONException e) {e.printStackTrace();}break;case R.id.btn2: JSONObject demoJson2;try {demoJson2 = new JSONObject(json2);String name = demoJson2.getString("name");String version = demoJson2.getString("version");tv.setText("name:" + name + ",version" + version);} catch (JSONException e) {e.printStackTrace();}break;case R.id.btn3:JSONObject demoJson3;try {demoJson3 = new JSONObject(jsonArray1);JSONArray numberList = demoJson3.getJSONArray("namber");tv.setText("");for (int i = 0; i < numberList.length(); i++) {tv.setText(tv.getText() + "\n" + numberList.getInt(i));}} catch (JSONException e) {e.printStackTrace();}break;case R.id.btn4:JSONObject demoJson4;try {demoJson4 = new JSONObject(jsonArray2);JSONArray numberList = demoJson4.getJSONArray("number");tv.setText("");for (int i = 0; i < numberList.length(); i++) {tv.setText(tv.getText() + "\n"+ numberList.getJSONArray(i).getString(0) + ";"+ numberList.getJSONArray(i).getInt(1));}} catch (JSONException e) {e.printStackTrace();}break;case R.id.btn5: JSONObject demoJson5;try {demoJson5 = new JSONObject(jsonObj);JSONArray numberList = demoJson5.getJSONArray("mobile");tv.setText("");for (int i = 0; i < numberList.length(); i++) {tv.setText(tv.getText() + "\n"+ numberList.getJSONObject(i).getString("name"));}} catch (JSONException e) {e.printStackTrace();}break;default:break;}}};}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/LinearLayout1"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"tools:context=".MainActivity" ><TextViewandroid:id="@+id/tv"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="Json数据解析" /><Buttonandroid:id="@+id/btn1"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="解析一个属性的对象" /><Buttonandroid:id="@+id/btn2"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="解析多个属性的对象" /><Buttonandroid:id="@+id/btn3"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="解析一个普通数组" /><Buttonandroid:id="@+id/btn4"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="解析一个嵌套数组" /><Buttonandroid:id="@+id/btn5"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="解析一个对象数组" /></LinearLayout>
//Gson解析JSON <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/LinearLayout1"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"tools:context=".MainActivity" ><TextViewandroid:id="@+id/tv"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="Json数据解析" /><Buttonandroid:id="@+id/btn1"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="解析一个属性的对象" /><Buttonandroid:id="@+id/btn2"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="解析多个属性的对象" /><Buttonandroid:id="@+id/btn3"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="解析一个普通数组" /><Buttonandroid:id="@+id/btn4"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="解析一个嵌套数组" /></LinearLayout>public class Person {private String name;private int age;public Person() {super();}public Person(String name, int age) {super();this.name = name;this.age = age;}public String getName() {return name;}public void setName(String name) {this.name = name;}public int getAge() {return age;}public void setAge(int age) {this.age = age;}public String toString() {return "Person [name=" + name + ", age=" + age + "]";}}public class MainActivity extends Activity {private Button btn1; private Button btn2; private Button btn3; private Button btn4; private TextView tv;private Gson gson = new Gson();@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void findView() {btn1 = (Button) findViewById(R.id.btn1);btn2 = (Button) findViewById(R.id.btn2);btn3 = (Button) findViewById(R.id.btn3);btn4 = (Button) findViewById(R.id.btn4);tv = (TextView) findViewById(R.id.tv);}private void setListener() {btn1.setOnClickListener(mylistener);btn2.setOnClickListener(mylistener);btn3.setOnClickListener(mylistener);btn4.setOnClickListener(mylistener);}private OnClickListener mylistener = new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btn1: String json = "{\"name\":\"Wyl\",\"age\":30}";Person person = gson.fromJson(json, Person.class);tv.setText(person.toString());break;case R.id.btn2: Person person1 = new Person("test", 20);String json_Person = gson.toJson(person1);tv.setText(json_Person);break;case R.id.btn3: ArrayList<Person> persons = new ArrayList<Person>();Collections.addAll(persons, new Person("tom", 10), new Person("jon", 20));String json_list = gson.toJson(persons);tv.setText(json_list);break;case R.id.btn4:String s = "[{\"name\":\"tom\",\"age\":10},{\"name\":\"jon\",\"age\":20}]";List<Person> retList = gson.fromJson(s,new TypeToken<List<Person>>() {}.getType());String t = "";for (Person p : retList) {t += p.toString();}tv.setText(t);break;default:break;}}};}Android中的多媒体开发
Android中多媒体应用开发
//屏幕方向改变 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/btn_orientation"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="改变屏幕方向" /></LinearLayout>public class MainActivity extends Activity {private Button btnChangeScreen;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void findView() {btnChangeScreen = (Button) findViewById(R.id.btn_orientation);}private void setListener() {btnChangeScreen.setOnClickListener(listener);}OnClickListener listener = new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btn_orientation:if (MainActivity.this.getRequestedOrientation() == ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED) {// 无法进行画面的旋转Toast.makeText(MainActivity.this, "无法改变屏幕方向",Toast.LENGTH_SHORT).show();} else {if (MainActivity.this.getRequestedOrientation() == ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE) { // 现在的方向是横屏显示Toast.makeText(MainActivity.this, "已改变为竖屏方向",Toast.LENGTH_SHORT).show();setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);} else if (MainActivity.this.getRequestedOrientation() == ActivityInfo.SCREEN_ORIENTATION_PORTRAIT) { // 如果为竖屏显示Toast.makeText(MainActivity.this, "已改变为横屏方向",Toast.LENGTH_SHORT).show();setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE); // 变为横屏显示}}break;}}};}
//调用系统相机拍照 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/btn_takephoto"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="拍照" /><ImageViewandroid:id="@+id/iv_image"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="center" /></LinearLayout>public class MainActivity extends Activity {private static final int RESULT_CAPTURE_IMAGE = 1;private String strImgPath = "";// 照片文件绝对路径private Button btnTakePhoto;private ImageView ivSurface;private File out;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void findView() {btnTakePhoto = (Button) findViewById(R.id.btn_takephoto);ivSurface = (ImageView) findViewById(R.id.iv_image);}private void setListener() {btnTakePhoto.setOnClickListener(listener);}OnClickListener listener = new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btn_takephoto:cameraMethod();break;}}};private void cameraMethod() {Intent imageCaptureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);strImgPath = Environment.getExternalStorageDirectory().toString()+ "/CONSDCGMPIC/";String fileName = new SimpleDateFormat("yyyyMMddHHmmss").format(new Date()) + ".jpg";out = new File(strImgPath);if (!out.exists()) {out.mkdirs();}out = new File(strImgPath, fileName);strImgPath = strImgPath + fileName;startActivityForResult(imageCaptureIntent, RESULT_CAPTURE_IMAGE);}@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {super.onActivityResult(requestCode, resultCode, data);switch (requestCode) {case RESULT_CAPTURE_IMAGE:if (resultCode == RESULT_OK) {Bundle extras = data.getExtras();Bitmap b = (Bitmap) extras.get("data");Matrix matrix = new Matrix();matrix.postScale(5f, 4f);b = Bitmap.createBitmap(b, 0, 0, b.getWidth(), b.getHeight(),matrix, true);ivSurface.setImageBitmap(b);try {FileOutputStream outStream = new FileOutputStream(out);b.compress(CompressFormat.JPEG, 100, outStream);outStream.close();} catch (Exception e) {e.printStackTrace();}}break;}}}
//录音机 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/btn_startvoicerecoding"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="开始录音" /><Buttonandroid:id="@+id/btn_stopvoicerecoding"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="停止录音" /></LinearLayout>public class MainActivity extends Activity {private Button recordButton;private Button stopButton;private MediaRecorder mr;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void findView() {recordButton = (Button) this.findViewById(R.id.btn_startvoicerecoding);stopButton = (Button) this.findViewById(R.id.btn_stopvoicerecoding);}private void setListener() {recordButton.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {File file = new File("/sdcard/"+ "YY"+ new DateFormat().format("yyyyMMdd_hhmmss",Calendar.getInstance(Locale.CHINA)) + ".amr");Toast.makeText(getApplicationContext(),"正在录音，录音文件在" + file.getAbsolutePath(),Toast.LENGTH_LONG).show();mr = new MediaRecorder();mr.setAudioSource(MediaRecorder.AudioSource.DEFAULT);mr.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT);mr.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);mr.setOutputFile(file.getAbsolutePath());try {file.createNewFile();mr.prepare();} catch (IllegalStateException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}mr.start();recordButton.setText("录音中……");}});stopButton.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {if (mr != null) {mr.stop();mr.release();mr = null;recordButton.setText("录音");Toast.makeText(getApplicationContext(), "录音完毕",Toast.LENGTH_LONG).show();}}});}}
//录像机 public class MainActivity extends Activity implements SurfaceHolder.Callback {private Button start;private Button stop;private MediaRecorder mediarecorder;private SurfaceView surfaceview;private SurfaceHolder surfaceHolder;public void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);requestWindowFeature(Window.FEATURE_NO_TITLE);getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);getWindow().setFormat(PixelFormat.TRANSLUCENT);setContentView(R.layout.activity_main);init();}private void init() {start = (Button) this.findViewById(R.id.start);stop = (Button) this.findViewById(R.id.stop);start.setOnClickListener(new TestVideoListener());stop.setOnClickListener(new TestVideoListener());surfaceview = (SurfaceView) this.findViewById(R.id.surfaceview);SurfaceHolder holder = surfaceview.getHolder();holder.addCallback(this);holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);}class TestVideoListener implements OnClickListener {@Overridepublic void onClick(View v) {if (v == start) {mediarecorder = new MediaRecorder();mediarecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);mediarecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);mediarecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);mediarecorder.setVideoSize(176, 144);mediarecorder.setVideoFrameRate(20);mediarecorder.setPreviewDisplay(surfaceHolder.getSurface());mediarecorder.setOutputFile("/sdcard/wyl.3gp");try {mediarecorder.prepare();mediarecorder.start();} catch (IllegalStateException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}}if (v == stop) {if (mediarecorder != null) {mediarecorder.stop();mediarecorder.release();mediarecorder = null;}}}}@Overridepublic void surfaceChanged(SurfaceHolder holder, int format, int width,int height) {surfaceHolder = holder;}@Overridepublic void surfaceCreated(SurfaceHolder holder) {surfaceHolder = holder;}@Overridepublic void surfaceDestroyed(SurfaceHolder holder) {surfaceview = null;surfaceHolder = null;mediarecorder = null;}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="horizontal" ><LinearLayoutandroid:layout_width="fill_parent"android:layout_height="fill_parent"android:layout_weight="1" ><SurfaceViewandroid:id="@+id/surfaceview"android:layout_width="fill_parent"android:layout_height="fill_parent" /></LinearLayout><LinearLayoutandroid:layout_width="fill_parent"android:layout_height="fill_parent"android:layout_weight="4"android:gravity="center"android:orientation="vertical" ><Buttonandroid:id="@+id/start"android:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_weight="1"android:text="Start" /><Buttonandroid:id="@+id/stop"android:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_weight="1"android:text="Stop" /></LinearLayout></LinearLayout>
//手电筒应用 public class MainActivity extends Activity {private Button btnLight;private Camera m_Camera;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void findView() {btnLight = (Button) findViewById(R.id.btn_open);}private void setListener() {btnLight.setOnClickListener(listener);}OnClickListener listener = new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btn_open:if (isSupposeFlashLight()) {if (null == m_Camera) {m_Camera = Camera.open();Camera.Parameters parameters = m_Camera.getParameters();parameters.setFlashMode(Camera.Parameters.FLASH_MODE_TORCH);m_Camera.setParameters(parameters);m_Camera.startPreview();btnLight.setText("关闭手电筒");Toast.makeText(MainActivity.this, "手电筒已打开",Toast.LENGTH_SHORT).show();} else {m_Camera.stopPreview();m_Camera.release();m_Camera = null;btnLight.setText("打开手电筒");Toast.makeText(MainActivity.this, "手电筒已关闭",Toast.LENGTH_SHORT).show();}} else {Toast.makeText(MainActivity.this, "您的设备不支持闪光灯",Toast.LENGTH_SHORT).show();}break;}}};public Boolean isSupposeFlashLight() {PackageManager pm = this.getPackageManager();FeatureInfo[] features = pm.getSystemAvailableFeatures();for (FeatureInfo f : features) {if (PackageManager.FEATURE_CAMERA_FLASH.equals(f.name)) // 判断设备是否支持闪光灯{return true;}}return false;}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/btn_open"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="打开手电筒" /></LinearLayout>
//计时器 public class MainActivity extends Activity {private int startTime = 0;private Chronometer chronometer;private Button btnOperate;private Button btnRest;private EditText edtSetTime;private Boolean boolOperate = true;public void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void findView() {// TODO Auto-generated method stubchronometer = (Chronometer) findViewById(R.id.chronometer);btnOperate = (Button) findViewById(R.id.btntimeopp);btnRest = (Button) findViewById(R.id.btnReset);edtSetTime = (EditText) findViewById(R.id.edt_settime);}private void setListener() {// TODO Auto-generated method stubbtnRest.setOnClickListener(listener);btnOperate.setOnClickListener(listener);chronometer.setOnChronometerTickListener(new Chronometer.OnChronometerTickListener() {@Overridepublic void onChronometerTick(Chronometer chronometer) {if (SystemClock.elapsedRealtime()- chronometer.getBase() > startTime * 1000) {chronometer.stop();showDialog();}}});}OnClickListener listener = new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btntimeopp:if (boolOperate) {String ss = edtSetTime.getText().toString();if (!(ss.equals("") && ss != null)) {startTime = Integer.parseInt(edtSetTime.getText().toString());}chronometer.setBase(SystemClock.elapsedRealtime());chronometer.start();boolOperate = false;edtSetTime.setClickable(false);btnOperate.setText("点击停止");}else {chronometer.stop();boolOperate = true;edtSetTime.setClickable(true);btnOperate.setText("点击开始");}break;case R.id.btnReset:chronometer.setBase(SystemClock.elapsedRealtime());break;default:break;}}};protected void showDialog() {AlertDialog.Builder builder = new AlertDialog.Builder(this);builder.setIcon(R.drawable.ic_launcher);builder.setTitle("警告").setMessage("时间到").setPositiveButton("确定", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {}});AlertDialog dialog = builder.create();dialog.show();}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:gravity="center"android:orientation="vertical" ><LinearLayoutandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_margin="10dip"android:orientation="horizontal" ><TextViewandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_weight="4"android:gravity="center"android:text="设置时间:" /><EditTextandroid:id="@+id/edt_settime"android:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_weight="1"android:inputType="number" /></LinearLayout><Chronometerandroid:id="@+id/chronometer"android:layout_width="fill_parent"android:layout_height="wrap_content"android:gravity="center"android:textColor="#ff0000"android:textSize="60dip" /><LinearLayoutandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_margin="10dip"android:orientation="horizontal" ><Buttonandroid:id="@+id/btntimeopp"android:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_weight="1"android:text="开始记时" /><Buttonandroid:id="@+id/btnReset"android:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_weight="1"android:text="重置" /></LinearLayout></LinearLayout>
//语音识别功能 public class MainActivity extends Activity {private Button btnReconizer;private static final int VOICE_RECOGNITION_REQUEST_CODE = 1234;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void findView() {btnReconizer = (Button) findViewById(R.id.btn_open);}private void setListener() {btnReconizer.setOnClickListener(listener);}OnClickListener listener = new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btn_open:try {Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);intent.putExtra(RecognizerIntent.EXTRA_PROMPT, "开始语音");startActivityForResult(intent,VOICE_RECOGNITION_REQUEST_CODE);} catch (Exception e) {e.printStackTrace();Toast.makeText(getApplicationContext(), "找不到语音设备", 1).show();}break;}}};@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {if (requestCode == VOICE_RECOGNITION_REQUEST_CODE&& resultCode == RESULT_OK) {ArrayList<String> results = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);String resultString = "";for (int i = 0; i < results.size(); i++) {resultString += results.get(i);}Toast.makeText(this, resultString, 1).show();}super.onActivityResult(requestCode, resultCode, data);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/btn_open"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="开始语音识别" /></LinearLayout>
//语音转换文本 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_above="@+id/textView1"android:layout_toLeftOf="@+id/textView1"android:gravity="center"android:orientation="vertical" ><Buttonandroid:id="@+id/btnSpeak"android:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_margin="10dp"android:layout_marginRight="10dp"android:layout_marginTop="10dp"android:text="speak"/><TextViewandroid:id="@+id/txtText"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginLeft="10dp"android:layout_marginRight="10dp"android:layout_marginTop="10dp"android:textAppearance="?android:attr/textAppearanceLarge"android:text="此处将你所说的话转化为文本显示出来" /></LinearLayout>public class MainActivity extends Activity {protected static final int RESULT_SPEECH = 1;private Button btnSpeak;private TextView txtText;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();setListener();}private void findView() {txtText = (TextView) findViewById(R.id.txtText);btnSpeak = (Button) findViewById(R.id.btnSpeak);}private void setListener() {btnSpeak.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, "en-US");try {startActivityForResult(intent, RESULT_SPEECH);txtText.setText("");} catch (ActivityNotFoundException a) {Toast t = Toast.makeText(getApplicationContext(),"您的手机不支持Speech to Text功能",Toast.LENGTH_SHORT);t.show();}}});}@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {super.onActivityResult(requestCode, resultCode, data);switch (requestCode) {case RESULT_SPEECH:if (resultCode == RESULT_OK && null != data) {ArrayList<String> text = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);txtText.setText(text.get(0));}break;}}}
//TTS文字朗读 public class MainActivity extends Activity implements OnInitListener {private EditText inputText = null;private Button speakBtn = null;private static final int REQ_TTS_STATUS_CHECK = 0;private static final String TAG = "TTS Demo";private TextToSpeech mTts;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);Intent checkIntent = new Intent();checkIntent.setAction(TextToSpeech.Engine.ACTION_CHECK_TTS_DATA);startActivityForResult(checkIntent, REQ_TTS_STATUS_CHECK);findView();setListener();}private void setListener() {speakBtn.setOnClickListener(new OnClickListener() {public void onClick(View v) {mTts.speak(inputText.getText().toString(),TextToSpeech.QUEUE_ADD, null);}});}private void findView() {inputText = (EditText) findViewById(R.id.inputText);speakBtn = (Button) findViewById(R.id.speakBtn);inputText.setText("hello world.");}@Overridepublic void onInit(int status) {if (status == TextToSpeech.SUCCESS) {int result = mTts.setLanguage(Locale.US);if (result == TextToSpeech.LANG_MISSING_DATA|| result == TextToSpeech.LANG_NOT_SUPPORTED){Log.v(TAG, "Language is not available");speakBtn.setEnabled(false);} else {mTts.speak("This is an example of speech synthesis.",TextToSpeech.QUEUE_ADD, null);speakBtn.setEnabled(true);}}}protected void onActivityResult(int requestCode, int resultCode, Intent data) {if (requestCode == REQ_TTS_STATUS_CHECK) {switch (resultCode) {case TextToSpeech.Engine.CHECK_VOICE_DATA_PASS:{mTts = new TextToSpeech(this, this);Log.v(TAG, "TTS Engine is installed!");}break;case TextToSpeech.Engine.CHECK_VOICE_DATA_BAD_DATA:case TextToSpeech.Engine.CHECK_VOICE_DATA_MISSING_DATA:case TextToSpeech.Engine.CHECK_VOICE_DATA_MISSING_VOLUME:{Log.v(TAG, "Need language stuff:" + resultCode);Intent dataIntent = new Intent();dataIntent.setAction(TextToSpeech.Engine.ACTION_INSTALL_TTS_DATA);startActivity(dataIntent);}break;case TextToSpeech.Engine.CHECK_VOICE_DATA_FAIL:default:Log.v(TAG, "Got a failure. TTS apparently not available");break;}} else {}}@Overrideprotected void onPause() {super.onPause();if (mTts != null){mTts.stop();}}@Overrideprotected void onDestroy() {super.onDestroy();mTts.shutdown();}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><EditTextandroid:id="@+id/inputText"android:layout_width="fill_parent"android:layout_height="wrap_content"android:hint="Input the text here!" ></EditText><Buttonandroid:id="@+id/speakBtn"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="center_horizontal"android:enabled="false"android:text="Speak" ></Button></LinearLayout>
//本地音频播放 public class MainActivity extends Activity {private Button BtnStart;private Button BtnPause;private Button BtnStop;private MediaPlayer player = new MediaPlayer();@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);try {player.setDataSource("/sdcard/test.mp3");} catch (IllegalArgumentException e) {e.printStackTrace();} catch (IllegalStateException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}findView();setListener();}private void setListener() {BtnStart.setOnClickListener(mylistener);BtnPause.setOnClickListener(mylistener);BtnStop.setOnClickListener(mylistener);}private void findView() {BtnStart = (Button) findViewById(R.id.BtnStart);BtnPause = (Button) findViewById(R.id.BtnPause);BtnStop = (Button) findViewById(R.id.BtnStop);}OnClickListener mylistener = new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.BtnStart:try {player.prepare();} catch (IllegalStateException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}player.start();break;case R.id.BtnPause:player.pause();break;case R.id.BtnStop:player.seekTo(0);player.stop();try {player.prepare();} catch (IllegalStateException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}break;default:break;}}};}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/BtnStart"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="开始" /><Buttonandroid:id="@+id/BtnPause"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="暂停" /><Buttonandroid:id="@+id/BtnStop"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="停止" /></LinearLayout>
//音效播放 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><Buttonandroid:id="@+id/BtnPlay"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="Play" /><Buttonandroid:id="@+id/BtnMore"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="More" /></LinearLayout>public class MainActivity extends Activity implements View.OnClickListener,SoundPool.OnLoadCompleteListener {static String TAG = "TestSoundPoolActivity";private SoundPool sndPool;private static final int SOUND_LOAD_OK = 1;private final Handler mHandler = new MyHandler();@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);findView();sndPool = new SoundPool(16, AudioManager.STREAM_MUSIC, 0);sndPool.setOnLoadCompleteListener(this);}private void findView() {Button b1 = (Button) findViewById(R.id.BtnPlay);b1.setOnClickListener(this);b1 = (Button) findViewById(R.id.BtnMore);b1.setOnClickListener(this);}public void onDestroy() {sndPool.release();super.onDestroy();}private class MyHandler extends Handler {public void handleMessage(Message msg) {switch (msg.what) {case SOUND_LOAD_OK:sndPool.play(msg.arg1, (float) 0.8, (float) 0.8, 16, 10,(float) 1.0);break;}}}public void onLoadComplete(SoundPool soundPool, int sampleId, int status) {Message msg = mHandler.obtainMessage(SOUND_LOAD_OK);msg.arg1 = sampleId;mHandler.sendMessage(msg);}public void onClick(View v) {int id = v.getId();switch (id) {case R.id.BtnPlay:if (sndPool != null)sndPool.load(this, R.raw.f, 1);break;case R.id.BtnMore:sndPool.load(this, R.raw.f, 1);Log.v(TAG, "more");break;}}}
//播放本地视频 public class MainActivity extends Activity implementsMediaPlayer.OnErrorListener, MediaPlayer.OnCompletionListener {public static final String TAG = "VideoPlayer";private VideoView mVideoView;private Uri mUri;private int mPositionWhenPaused = -1;private MediaController mMediaController;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);mVideoView = (VideoView) findViewById(R.id.videoview);mUri = Uri.parse(Environment.getExternalStorageDirectory()+ "/video.3gp");mMediaController = new MediaController(this);mVideoView.setMediaController(mMediaController);}@Overridepublic boolean onError(MediaPlayer mp, int what, int extra) {return false;}@Overridepublic void onCompletion(MediaPlayer mp) {this.finish();}public void onStart() {mVideoView.setVideoURI(mUri);mVideoView.start();super.onStart();}public void onPause() {mPositionWhenPaused = mVideoView.getCurrentPosition();mVideoView.stopPlayback();super.onPause();}public void onResume() {if (mPositionWhenPaused >= 0) {mVideoView.seekTo(mPositionWhenPaused);mPositionWhenPaused = -1;}super.onResume();}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="wrap_content"android:layout_height="wrap_content" ><VideoViewandroid:id="@+id/videoview"android:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_centerInParent="true" /></LinearLayout>
//加速度传感器应用 public class MainActivity extends Activity {private TextView Tv;private SensorManager sm;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);sm = (SensorManager)getSystemService(Context.SENSOR_SERVICE);findView();}@Overrideprotected void onResume() {super.onResume();sm.registerListener(sel,sm.getDefaultSensor(Sensor.TYPE_ACCELEROMETER), SensorManager.SENSOR_DELAY_UI);}@Overrideprotected void onStop() {sm.unregisterListener(sel);super.onStop();}SensorEventListener sel = new SensorEventListener() {@Overridepublic void onSensorChanged(SensorEvent event) {// TODO Auto-generated method stubString str;str = "X方向的加速度是："+event.values[0];str += "\nY方向的加速度是："+event.values[1];str += "\nZ方向的加速度是："+event.values[2];Tv.setText(str);}@Overridepublic void onAccuracyChanged(Sensor sensor, int accuracy) {}};private void findView() {Tv = (TextView) findViewById(R.id.Tv);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><TextViewandroid:id="@+id/Tv"android:layout_width="match_parent"android:layout_height="wrap_content" /></LinearLayout>
//光强度查看器 public class MainActivity extends Activity {private TextView Tv;private SensorManager sm;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);sm = (SensorManager)getSystemService(Context.SENSOR_SERVICE);findView();}@Overrideprotected void onResume() {super.onResume();sm.registerListener(sel,sm.getDefaultSensor(Sensor.TYPE_LIGHT), SensorManager.SENSOR_DELAY_FASTEST); }@Overrideprotected void onStop() {sm.unregisterListener(sel);super.onStop();}SensorEventListener sel = new SensorEventListener() {@Overridepublic void onSensorChanged(SensorEvent event) {String str;str = "当前的手机范围内的光强度为："+event.values[0];Tv.setText(str);}@Overridepublic void onAccuracyChanged(Sensor sensor, int accuracy) {}};private void findView() {Tv = (TextView) findViewById(R.id.Tv);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><TextViewandroid:id="@+id/Tv"android:layout_width="match_parent"android:layout_height="wrap_content" /></LinearLayout>
//微信摇一摇功能 public class MainActivity extends Activity {private TextView Tv;private SensorManager sm;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);sm = (SensorManager) getSystemService(Context.SENSOR_SERVICE);findView();}@Overrideprotected void onResume() {super.onResume();sm.registerListener(sel,sm.getDefaultSensor(Sensor.TYPE_ACCELEROMETER),SensorManager.SENSOR_DELAY_UI);}@Overrideprotected void onStop() {sm.unregisterListener(sel);super.onStop();}SensorEventListener sel = new SensorEventListener() {@Overridepublic void onSensorChanged(SensorEvent event) {int sensorType = event.sensor.getType();float[] values = event.values;if (sensorType == Sensor.TYPE_ACCELEROMETER) {if (Math.abs(values[0]) > 14 || Math.abs(values[1]) > 14|| Math.abs(values[2]) > 14) {Tv.setText("您摇到一位好友");}}}@Overridepublic void onAccuracyChanged(Sensor sensor, int accuracy) {}};private void findView() {Tv = (TextView) findViewById(R.id.Tv);}}<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><TextViewandroid:id="@+id/Tv"android:layout_width="match_parent"android:layout_height="wrap_content"android:textSize="20sp"android:text="请摇动手机得到一位好友！" /></LinearLayout>
桌面插件开发
//切换壁纸插件 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:orientation="vertical" android:layout_width="fill_parent"android:layout_height="fill_parent"><Button android:id="@+id/btn"android:layout_width="fill_parent"android:layout_height="wrap_content"android:gravity="center"android:background="@drawable/ic_launcher"/><TextViewandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:text="切换壁纸"/></LinearLayout>public class AppWidet extends AppWidgetProvider {private static final String CLICK_NAME_ACTION = "com.wyl.action.widget.click";private RemoteViews myRemoteViews;private static int clickTime;private int[] images = { R.raw.image_01, R.raw.image_02, R.raw.image_03,R.raw.image_04, R.raw.image_05 };private InputStream is;@Overridepublic void onUpdate(Context context, AppWidgetManager appWidgetManager,int[] appWidgetIds) {updateAppWidget(context, appWidgetManager);}public void updateAppWidget(Context context, AppWidgetManager appWidgeManger) {myRemoteViews = new RemoteViews(context.getPackageName(), R.layout.main);Intent intentClick = new Intent(CLICK_NAME_ACTION);PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0,intentClick, 0);myRemoteViews.setOnClickPendingIntent(R.id.btn, pendingIntent);ComponentName myComponentName = new ComponentName(context,AppWidet.class);AppWidgetManager myAppWidgetManager = AppWidgetManager.getInstance(context);myAppWidgetManager.updateAppWidget(myComponentName, myRemoteViews);}@Overridepublic void onDeleted(Context context, int[] appWidgetIds) {System.out.println("onDeleted");super.onDeleted(context, appWidgetIds);}@Overridepublic void onEnabled(Context context) {System.out.println("onEnabled");super.onEnabled(context);}@Overridepublic void onDisabled(Context context) {System.out.println("onDisabled");super.onDisabled(context);}@Overridepublic void onReceive(Context context, Intent intent) {System.out.println("onReceive");super.onReceive(context, intent);if (myRemoteViews == null) {myRemoteViews = new RemoteViews(context.getPackageName(),R.layout.main);}if (intent.getAction().equals(CLICK_NAME_ACTION)) {Log.e("CLICK_NAME_ACTION", clickTime + "");if (clickTime < images.length) {Resources resources = context.getResources();is = resources.openRawResource(images[clickTime]);try {context.setWallpaper(is);Toast.makeText(context, "桌面壁纸已切换", Toast.LENGTH_SHORT).show();} catch (Exception e) {e.printStackTrace();}clickTime++;if (clickTime >= images.length ) {clickTime = 0;}} else {Toast.makeText(context, "桌面壁纸已换完", Toast.LENGTH_SHORT).show();}AppWidgetManager appWidgetManger = AppWidgetManager.getInstance(context);int[] appIds = appWidgetManger.getAppWidgetIds(new ComponentName(context, AppWidet.class));appWidgetManger.updateAppWidget(appIds, myRemoteViews);}}}
//倒计时插件 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:orientation="vertical" android:layout_width="wrap_content"android:layout_height="fill_parent"><TextView android:id="@+id/text"android:layout_width="wrap_content"android:layout_height="fill_parent"android:singleLine="false"android:gravity="center"android:textSize="17dip"android:textColor="#FF0000"android:layout_marginLeft="5dip"android:layout_marginRight="5dip"android:background="@drawable/text"/></LinearLayout>public class AppWidet extends AppWidgetProvider {private static final String CLICK_NAME_ACTION = "com.wyl.action.widget.click";private RemoteViews myRemoteViews;@Overridepublic void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {Timer timer=new Timer();timer.scheduleAtFixedRate(new MyTime(context, appWidgetManager), 1, 60000);super.onUpdate(context, appWidgetManager, appWidgetIds);}@Overridepublic void onDeleted(Context context, int[] appWidgetIds) {System.out.println("onDeleted");super.onDeleted(context, appWidgetIds);}@Overridepublic void onEnabled(Context context) {System.out.println("onEnabled");super.onEnabled(context);}@Overridepublic void onDisabled(Context context) {System.out.println("onDisabled");super.onDisabled(context);}@Overridepublic void onReceive(Context context, Intent intent) {System.out.println("onReceive");super.onReceive(context, intent);}private class MyTime extends TimerTask{ RemoteViews remoteViews; AppWidgetManager appWidgetManager; ComponentName thisWidget; public MyTime(Context context,AppWidgetManager appWidgetManager){ this.appWidgetManager = appWidgetManager;remoteViews = new RemoteViews(context.getPackageName(),R.layout.main); thisWidget = new ComponentName(context,AppWidet.class); } public void run() { Date date = new Date();Calendar calendar = new GregorianCalendar(2013,10,01); long days = (((calendar.getTimeInMillis()-date.getTime())/1000))/86400; remoteViews.setTextViewText(R.id.text, "距离期末考试还有" + days+"天"); appWidgetManager.updateAppWidget(thisWidget, remoteViews); } } }Android开发范例实战宝典相关推荐
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