黑马Android76期学习笔记01基础--day07--广播，有、无序广播、特殊广播接受者、样式和主题，this与context的区别、普通对话框，进度条对话框、帧动画

1.广播Broadcastreceiver

1、定义一个广播接收者（定义一个类并继承BroadcastReceiver）

public class OutGoingCallReveiver extends BroadcastReceiver

2、在清单文件里面进行配置

 <receiver android:name=".OutGoingCallReveiver"><intent-filter><action android:name="android.intent.action.NEW_OUTGOING_CALL"/></intent-filter></receiver>

案例
1、清单文件

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"package="com.fengray.ex059"><uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS"/><applicationandroid:allowBackup="true"android:icon="@mipmap/ic_launcher"android:label="@string/app_name"android:roundIcon="@mipmap/ic_launcher_round"android:supportsRtl="true"android:theme="@style/AppTheme"><activity android:name=".MainActivity"><intent-filter><action android:name="android.intent.action.MAIN" /><category android:name="android.intent.category.LAUNCHER" /></intent-filter></activity><receiver android:name=".OutGoingCallReveiver"><intent-filter><action android:name="android.intent.action.NEW_OUTGOING_CALL"/></intent-filter></receiver></application></manifest>

2、自定义一个广播处理类，继承自BroadcastReceiver

package com.fengray.ex059;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.util.Log;

public class OutGoingCallReveiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
//获得sharePerference中ip号码，在config.xml中存储,因为广播没有上下文，所以这边通过参数传递过来一个上下文
SharedPreferences sharedPreferences= context.getSharedPreferences(“config”,0);
String ipnumber=sharedPreferences.getString(“ipnumber”,"");
//获取当前拨打的电话号码
String currentNumber=getResultData();
//判断当前的号码是否是长途
if (currentNumber.startsWith(“0”)){
//在当前的号码前加上17951
setResultData(ipnumber+currentNumber);
}
}
}
3、MainActivity类

import androidx.appcompat.app.AppCompatActivity;import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;public class MainActivity extends AppCompatActivity {private EditText edphoneNumber;private Button btnsave;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);edphoneNumber=findViewById(R.id.edphoneNumber);}//public void btnClick(View view){//获取号码String ipNumber=edphoneNumber.getText().toString().trim();//把当前ipNumber存起来，存在sp就行（sharePreference），sp实际是以config.xml的文件形式存储SharedPreferences sharedPreferences = getSharedPreferences("config",0);//获取sharepreferencs编辑器sharedPreferences.edit().putString("ipnumber",ipNumber).commit();//保存成功Toast.makeText(getApplicationContext(), "保存成功", Toast.LENGTH_SHORT).show();}
}

2.SD卡状态监听

1、定义广播接受者

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.util.Log;public class sdCardStateReceiver extends BroadcastReceiver {//当sd卡状态改变的时候@Overridepublic void onReceive(Context context, Intent intent) {String action=intent.getAction();if ("android.intent.action.MEDIA_MOUNTED".equals(action)){Log.d("TAG", "sd card is mounted ");}else if ("android.intent.action.MEDIA_UNMOUNTED".equals(action)){Log.d("TAG", "sd card is UNmounted ");}}
}

2、在清单文件里面配置

<manifest xmlns:android="http://schemas.android.com/apk/res/android"package="com.fengray.ex060"><uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/><uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/><applicationandroid:allowBackup="true"android:icon="@mipmap/ic_launcher"android:label="@string/app_name"android:roundIcon="@mipmap/ic_launcher_round"android:supportsRtl="true"android:theme="@style/AppTheme"><activity android:name=".MainActivity"><intent-filter><action android:name="android.intent.action.MAIN" /><category android:name="android.intent.category.LAUNCHER" /></intent-filter></activity><receiver android:name=".sdCardStateReceiver"><intent-filter><action android:name="android.intent.action.MEDIA_MOUNTED"/><action android:name="android.intent.action.MEDIA_UNMOUNTED"/><data android:scheme="file"/></intent-filter></receiver></application></manifest>

3.短信状态监听

1、清单文件

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"package="com.fengray.ex060"><uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/><uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/><applicationandroid:allowBackup="true"android:icon="@mipmap/ic_launcher"android:label="@string/app_name"android:roundIcon="@mipmap/ic_launcher_round"android:supportsRtl="true"android:theme="@style/AppTheme"><activity android:name=".MainActivity"><intent-filter><action android:name="android.intent.action.MAIN" /><category android:name="android.intent.category.LAUNCHER" /></intent-filter></activity><receiver android:name=".sdCardStateReceiver"><intent-filter><action android:name="android.intent.action.MEDIA_MOUNTED"/><action android:name="android.intent.action.MEDIA_UNMOUNTED"/><data android:scheme="file"/></intent-filter></receiver><receiver android:name=".SmsListener"><intent-filter><action android:name="android.provier.Telephony.SMS_RECEIVED"/></intent-filter></receiver></application></manifest>

2、自定义SmsListenerReceiver继承自BroadcastReceiver
public class SmsListenerReceiver extends BroadcastReceiver {
//当sd卡状态改变的时候
@Override
public void onReceive(Context context, Intent intent) {
//获得key值为pdus的所有短信
Object[] messages =(Object[])intent.getExtras().get(“pdus”);
for (Object message:messages) {
//获取Message的实例
SmsMessage smsMessage=SmsMessage.createFromPdu((byte[]) message);
//获取发送短信的内容
String messageBody=smsMessage.getMessageBody();
String address= smsMessage.getOriginatingAddress();

        Log.d("TAG", "body: "+messageBody+"from"+address);}
}

}

4.卸载安装监听

1、清单文件

<receiver android:name=".AppStateReceiver"><intent-filter><action android:name="android.intent.action.PACKAGE_INSTALL"/><action android:name="android.intent.action.PACKAGE_REMOVED"/><action android:name="android.intent.action.PACKAGE_ADDED"/><data android:scheme="package"/></intent-filter></receiver>

2、AppStateReceiver 类文件

public class AppStateReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
//获取当前广播的时间类型
String action=intent.getAction();
if (“android.intent.action.PACKAGE_INSTALL”.equals(action)){
Log.d(“TAG”, “应用安装了1111”);
}else if (“android.intent.action.PACKAGE_ADDED”.equals(action)){
Log.d(“TAG”, “应用安装了2222”);
}else if (“android.intent.action.PACKAGE_REMOVED”.equals(action)){
Log.d(“TAG”, “应用卸载了333”+intent.getData());

}
}

}

5.重启手机是启动指定页面

1、清单文件

<manifest xmlns:android="http://schemas.android.com/apk/res/android"package="com.fengray.ex060"><uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/><applicationandroid:allowBackup="true"android:icon="@mipmap/ic_launcher"android:label="@string/app_name"android:roundIcon="@mipmap/ic_launcher_round"android:supportsRtl="true"android:theme="@style/AppTheme"><activity android:name=".MainActivity"><intent-filter><action android:name="android.intent.action.MAIN" /><category android:name="android.intent.category.LAUNCHER" /></intent-filter></activity></application></manifest>

2、BootReceiver 类

public class BootReceiver extends BroadcastReceiver {@Overridepublic void onReceive(Context context, Intent intent) {//在这个方法里面开启activityIntent newIntent=new Intent(context,MainActivity.class);//不能再广播接受者当中直接开启activity，需要添加一个标记，添加一个任务栈的标记newIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);//在广播中开启activitycontext.startActivity(newIntent);}
}

6.无序广播

本例并没有实现，应该是高版本对广播权限有限制
1、清单文件

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"package="com.fengray.ex060"><applicationandroid:allowBackup="true"android:icon="@mipmap/ic_launcher"android:label="@string/app_name"android:roundIcon="@mipmap/ic_launcher_round"android:supportsRtl="true"android:theme="@style/AppTheme"><activity android:name=".MainActivity"><intent-filter><action android:name="android.intent.action.MAIN" /><category android:name="android.intent.category.LAUNCHER" /></intent-filter></activity><receiver android:name="com.fengray.ex060.CustromReceiver"><intent-filter><action android:name="com.fengray.CunstomerAction"/></intent-filter></receiver></application></manifest>

**2、自定义广播类文件CustromReceiver **

package com.fengray.ex060;import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.util.Log;
import android.widget.Toast;public class CustromReceiver extends BroadcastReceiver {//当接受到自定义广播@Overridepublic void onReceive(Context context, Intent intent) {Log.d("TAG", "onReceive: -------");String content=intent.getStringExtra("name");Log.d("TAG", "onReceive: "+content);Toast.makeText(context, content, Toast.LENGTH_SHORT).show();}
}

**3、MainActivity **

import androidx.appcompat.app.AppCompatActivity;import android.content.Intent;
import android.os.Bundle;
import android.view.View;public class MainActivity extends AppCompatActivity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);}//点击按钮发送一条无序广播public void sendBroadcast(View view){Intent intent=new Intent();intent.setAction("com.fengray.CunstomerAction");intent.putExtra("name","新闻联播每天晚上7点准时开播");sendBroadcast(intent);}}

7.有序广播

有序广播

有序广播可以被终止
有序广播的数据可以被修改

无序广播

无序广播不可被终止
数据不可以被修改

需要在两个APP之间进行
ex061项目–广播发送者
项目结构

1、MainActivity

import androidx.appcompat.app.AppCompatActivity;import android.content.Intent;
import android.os.Bundle;
import android.view.View;public class MainActivity extends AppCompatActivity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);}//点击按钮发送有序广播public void sendBroadcast(View view){Intent intent=new Intent();//intent.putExtra();intent.setAction("com.fengray.sender");//发送有序广播//receiverPermission：接受的权限//resualtReceiver：最终的receiver//scheduler：是一个handler//initialCode：初始码//initialData：初始化数据sendOrderedBroadcast(intent,null,new FinalReceiver(),null,1,"我是广播的内容", null );}
}

2、FinalReceiver

public class FinalReceiver extends BroadcastReceiver {@Overridepublic void onReceive(Context context, Intent intent) {//获取广播所携带的数据String content=getResultData();//将广播数据显示出来Toast.makeText(context, "这是最终的广播接受者"+content, Toast.LENGTH_SHORT).show();}
}

ex062项目–广播接受者
目录结构分了四级有序接受

1、ProvinceReceiver

public class ProvinceReceiver extends BroadcastReceiver {@Overridepublic void onReceive(Context context, Intent intent) {//获取广播所携带的数据String content=getResultData();//终止广播，后续级别都无法再接收到广播//abortBroadcast();//将广播数据显示出来Toast.makeText(context, "省级"+content, Toast.LENGTH_SHORT).show();//修改广播数据setResultData("被省一级修改后的数据");}
}

**2、CityReceiver **

public class CityReceiver extends BroadcastReceiver {@Overridepublic void onReceive(Context context, Intent intent) {//获取广播所携带的数据String content=getResultData();//将广播数据显示出来Toast.makeText(context, "市级"+content, Toast.LENGTH_SHORT).show();//修改广播数据setResultData("被市一级修改后的数据");}
}

**3、XianReceiver **

public class XianReceiver extends BroadcastReceiver {@Overridepublic void onReceive(Context context, Intent intent) {//获取广播所携带的数据String content=getResultData();//将广播数据显示出来Toast.makeText(context, "县级"+content, Toast.LENGTH_SHORT).show();//修改广播数据setResultData("被县一级修改后的数据");}
}

**4、PersonReceiver **

public class PersonReceiver extends BroadcastReceiver {@Overridepublic void onReceive(Context context, Intent intent) {//获取广播所携带的数据String content=getResultData();//将广播数据显示出来Toast.makeText(context, "个人"+content, Toast.LENGTH_SHORT).show();}
}

5、清单文件

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"package="com.fengray.ex062receiver"><applicationandroid:allowBackup="true"android:icon="@mipmap/ic_launcher"android:label="@string/app_name"android:roundIcon="@mipmap/ic_launcher_round"android:supportsRtl="true"android:theme="@style/AppTheme"><activity android:name=".MainActivity"><intent-filter><action android:name="android.intent.action.MAIN" /><category android:name="android.intent.category.LAUNCHER" /></intent-filter></activity><!--配置省级receiver，优先级最高，priority值越大，优先级越高--><receiver android:name=".ProvinceReceiver"><intent-filter android:priority="1000"><action android:name="com.fengray.sender"/></intent-filter></receiver><!--配置市级receiver，优先级最高，priority值越大，优先级越高--><receiver android:name=".CityReceiver"><intent-filter android:priority="800"><action android:name="com.fengray.sender"/></intent-filter></receiver><!--配置县级receiver，优先级最高，priority值越大，优先级越高--><receiver android:name=".XianReceiver"><intent-filter android:priority="400"><action android:name="com.fengray.sender"/></intent-filter></receiver><!--配置个人receiver，优先级最高，priority值越大，优先级越高--><receiver android:name=".PersonReceiver"><intent-filter android:priority="200"><action android:name="com.fengray.sender"/></intent-filter></receiver></application></manifest>

8.特殊广播接受者

操作特别频繁的广播事件，如屏幕解锁，在清单文件中注册是无效的

注册广播接收者的2种方式
1、动态注册：通过代码方式注册
2、在清单文件通过receiver tag节点静态发布

1、ScreenReceiver 类

public class ScreenReceiver extends BroadcastReceiver {@Overridepublic void onReceive(Context context, Intent intent) {//获取当前广播事件的类型String action=intent.getAction();if ("android.intent.action.SCREEN_ON".equals(action)){Log.d("TAG", "onReceive: 屏幕解锁了");}else if ("android.intent.action.SCREEN_OFF".equals(action)){Log.d("TAG", "onReceive: 屏幕锁屏了");}}
}

2、MainActivity

import androidx.appcompat.app.AppCompatActivity;import android.content.IntentFilter;
import android.os.Bundle;public class MainActivity extends AppCompatActivity {private ScreenReceiver screenReceiver;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);//动态注册广播接收者//创建接收者screenReceiver=new ScreenReceiver();//创建intenFilter对象IntentFilter intentFilter=new IntentFilter();//添加要注册的actionintentFilter.addAction("android.intent.action.SCREEN_OFF");intentFilter.addAction("android.intent.action.SCREEN_ON");//动态注册广播接收者registerReceiver(screenReceiver,intentFilter);}@Overrideprotected void onDestroy() {//当activity销毁的时候要取消注册广播接受者unregisterReceiver(screenReceiver);}
}

9.国际化

在res目录下创建不同国家语言环境集目录，目录是固定写法values-en zh…

10.两种context

this 是getApplicationContext的子类，在对话框中只能使用this代表context，因为他带有个tag，而getApplicationContext没有。

import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;import android.content.DialogInterface;
import android.os.Bundle;
import android.util.Log;
import android.view.View;public class MainActivity extends AppCompatActivity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);}public void btnClick(View view){//通过AlertDialog.builder构造器来创建AlertDialog.Builder builder=new AlertDialog.Builder(this);//这里不能是用getApplicationContext（）builder.setTitle("警告");builder.setMessage("世界上最遥远的距离是没有网络");builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {Log.d("TAG", "onClick: 您点击了确定按钮");}});builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {Log.d("TAG", "onClick: 您点击了取消按钮");}});builder.show();}
}

11.单选对话框

//单选对话框public void btnClick(View view){//通过AlertDialog.builder构造器来创建AlertDialog.Builder builder=new AlertDialog.Builder(this);//这里不能是用getApplicationContext（）builder.setTitle("请选择你喜欢的课程");//单选项的字符串数组final String items[]={"android","IOS","switf","kotlin","c"};builder.setSingleChoiceItems(items, -1, new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {//把选中的条目选出来String item=items[which];Toast.makeText(getApplicationContext(), item, Toast.LENGTH_SHORT).show();//关闭对话框dialog.dismiss();}});builder.show();}

12.多选对话框

    //多选对话框public void btnClick(View view){//通过AlertDialog.builder构造器来创建AlertDialog.Builder builder=new AlertDialog.Builder(this);//这里不能是用getApplicationContext（）builder.setTitle("请选择你喜欢的课程");//单选项的字符串数组final String items[]={"android","IOS","switf","kotlin","c"};final boolean[] checkedItems={true,false,false,true,false};//是否被选中builder.setMultiChoiceItems(items, checkedItems, new DialogInterface.OnMultiChoiceClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which, boolean isChecked) {}});builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {//把选中的条目的数据取出来StringBuffer stringBuffer=new StringBuffer();for (int i=0; i<items.length;i++){//判断一下选中的条目if(checkedItems[i]){String itemcontent=items[i];stringBuffer.append(itemcontent+" ");}}Toast.makeText(getApplicationContext(), stringBuffer.toString(), Toast.LENGTH_SHORT).show();//关闭对话框dialog.dismiss();}});builder.show();}
}

13.进度条对话框

 //进度条对话框public void btnClick(View view){//通过AlertDialog.builder构造器来创建final ProgressDialog dialog=new ProgressDialog(this);dialog.setTitle("正在玩命加载中……");dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);dialog.show();new Thread(){@Overridepublic void run() {dialog.setMax(100);for (int i=0;i<100;i++){dialog.setProgress(i);//睡眠一定的时间SystemClock.sleep(50);}//关闭对话框dialog.dismiss();}}.start();}
}

14.帧动画

引入动画资源，在drawable当中引入动画图片
引入连续图片

<?xml version="1.0" encoding="utf-8"?>
<animation-list xmlns:android="http://schemas.android.com/apk/res/android"android:oneshot="false"><item android:drawable="@drawable/banana01" android:duration="200"/><item android:drawable="@drawable/banana02" android:duration="200"/><item android:drawable="@drawable/banana03" android:duration="200"/><item android:drawable="@drawable/banana04" android:duration="200"/><item android:drawable="@drawable/banana05" android:duration="200"/></animation-list>

MainActivity

import androidx.appcompat.app.AppCompatActivity;import android.graphics.drawable.AnimationDrawable;
import android.os.Bundle;
import android.widget.ImageView;
import android.widget.TextView;public class MainActivity extends AppCompatActivity {private TextView mytv;private ImageView myimage;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);myimage=findViewById(R.id.myimg);//设置imageview的背景资源myimage.setBackgroundResource(R.drawable.myanim);//获取animationDrawable类型AnimationDrawable imageAnimation=(AnimationDrawable)myimage.getBackground();//开启动画imageAnimation.start();}
}