实例讲解一

实例效果图：

点击wifi“按钮”显示的界面：

项目结构

具体代码编写

1、左边页面布局界面，frag_list.xml：

<?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" ><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="无线和网络"android:textSize="30sp" /><TextViewandroid:layout_width="match_parent"android:layout_height="1px"android:background="@color/lineColor" /><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:layout_gravity="center_vertical"android:layout_marginLeft="10dp"android:orientation="horizontal" ><TextViewandroid:id="@+id/wifi"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="center_vertical"android:text="WI-Fi"android:textSize="30sp" /><ToggleButtonandroid:id="@+id/toggleButton"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="center_vertical"android:layout_marginLeft="20dp"android:text="开" /></LinearLayout><TextViewandroid:layout_width="match_parent"android:layout_height="1px"android:background="@color/lineColor" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="设备"android:textSize="30sp" /><TextViewandroid:layout_width="match_parent"android:layout_height="1px"android:background="@color/lineColor" /><TextViewandroid:id="@+id/saveBut"android:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_marginLeft="10dp"android:text="存储"android:textSize="35sp" /></LinearLayout>

2、右边页面布局界面，frag_detail.xml：

<?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:background="@color/right"android:orientation="vertical" ><RelativeLayoutandroid:id="@+id/save"android:layout_width="fill_parent"android:layout_height="fill_parent"android:layout_margin="10dp"android:visibility="gone" ><include layout="@layout/save" /></RelativeLayout><RelativeLayoutandroid:id="@+id/wifi"android:layout_width="fill_parent"android:layout_height="fill_parent"android:layout_margin="10dp"android:visibility="gone" ><include layout="@layout/wifi" /></RelativeLayout></LinearLayout>

3、主布局界面，main.xml：

<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="horizontal"tools:context=".AndroidFragmentActivity" ><!-- 主頁面 --><!-- 左边页面 --><fragmentandroid:id="@+id/frag_list"android:name="co.cm.fragement.FragementList"android:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_weight="2" /><!-- 右面页面 --><fragmentandroid:id="@+id/frag_detail"android:name="co.cm.fragement.FragementDetails"android:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_weight="1" /></LinearLayout>

4、list_item.xml：

<?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:background="@color/left"android:orientation="horizontal" ><ImageViewandroid:id="@+id/img"android:layout_width="wrap_content"android:layout_height="wrap_content" /><TextViewandroid:id="@+id/txt_title"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="Large Text"android:textAppearance="?android:attr/textAppearanceLarge" /></LinearLayout>

5、save.xml：

<?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" ><TextViewandroid:layout_width="match_parent"android:layout_height="1px"android:background="@color/lineColor" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginLeft="10dp"android:text="内部存储空间"android:textSize="30sp" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginBottom="5dp"android:layout_marginLeft="10dp"android:layout_marginTop="5dp"android:text="1GB/1.98GB"android:textSize="20sp" /><TextViewandroid:layout_width="match_parent"android:layout_height="1px"android:background="@color/lineColor" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginLeft="20dp"android:text="总容量"android:textSize="30sp" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginBottom="5dp"android:layout_marginLeft="20dp"android:layout_marginTop="5dp"android:text="1.98GB"android:textSize="20sp" /><TextViewandroid:layout_width="match_parent"android:layout_height="1px"android:background="@color/lineColor" /></LinearLayout>

6、wifi_list：

<?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" ><TextViewandroid:id="@+id/wifi_name"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="qinjin_tp_2" /><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="horizontal" ><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="信号强度  :" /><TextViewandroid:id="@+id/wifi_name_state"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="还没有连接" /></LinearLayout></LinearLayout>

7、wifi.xml：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><LinearLayoutandroid:id="@+id/wifiLinear"android:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="vertical" ><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="vertical" ><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="MAC地址  :"android:textSize="@dimen/textsize" /><TextViewandroid:id="@+id/mac_address"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="MAC地址 "android:textSize="@dimen/textsize" /></LinearLayout><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="vertical" ><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="接入点的BSSID :"android:textSize="@dimen/textsize" /><TextViewandroid:id="@+id/bssid"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="接入点的BSSID "android:textSize="@dimen/textsize" /></LinearLayout><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="vertical" ><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="IP地址: "android:textSize="@dimen/textsize" /><TextViewandroid:id="@+id/ip_address"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="IP地址 "android:textSize="@dimen/textsize" /></LinearLayout><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="vertical" ><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="id  "android:textSize="@dimen/textsize" /><TextViewandroid:id="@+id/id"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="id "android:textSize="@dimen/textsize" /></LinearLayout><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="vertical" ><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text=" WifiInfo的所有信息包   "android:textSize="@dimen/textsize" /><TextViewandroid:id="@+id/info"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="WifiInfo的所有信息包  "android:textSize="@dimen/textsize" /></LinearLayout><ListViewandroid:id="@+id/listview"android:layout_width="fill_parent"android:layout_height="fill_parent"android:layout_marginBottom="2dp" ></ListView></LinearLayout><TextViewandroid:id="@+id/wifiText"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_centerInParent="true"android:text="要查看可用的网络，请打开wifi"android:textSize="@dimen/textsize" /></RelativeLayout>

8、主界面类，AndroidFragmentActivity.java：

package co.cm.fragement;import co.cm.fragement.R;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;public class AndroidFragmentActivity extends Activity {// 主activity
        @Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);WifiAdmin.getWifiAdmin().setmContext(AndroidFragmentActivity.this);WifiAdmin.getWifiAdmin().getWifiMeathod();}
}

9、左面fragment界面类，FragmentList.java：

package co.cm.fragement;import co.cm.fragement.R;import android.app.Fragment;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.ToggleButton;/*** @author yuyang*        功能描述：左面fragment界面类，该类提供了选项操作*/
public class FragementList extends Fragment {//点击切换到wifi存储界面private TextView wifi;//点击切换到save存储界面private TextView saveBut;//定义右面fragment实例private FragementDetails frag_detail;//打开关闭wifi按钮private ToggleButton toggleButton;//toggleButton按钮是否被点击private boolean isChecked = false;//监听button状态线程标志位private boolean butIsRunning = false;@Overridepublic View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {// 在这里初始化fragment的页面return inflater.inflate(R.layout.frag_list, container, false);}@Overridepublic void onActivityCreated(Bundle savedInstanceState) {super.onActivityCreated(savedInstanceState);// 由于fragment不是activity，不是oncreated，而是onActivityCreated
                setView();setListener();startThread();// 启动控制button的线程，当wifi状态不是在1或者3的时候，不可点击，// if (frag != null && frag.isInLayout()) {// switch (arg2) {// case 0:// frag.setText("0000");
        }/*** 给按钮设置监听*/public void setListener() {        saveBut.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {frag_detail.setSaveShow();}});wifi.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {frag_detail.setWifiShow();Log.i("111", WifiAdmin.getWifiAdmin().checkState() + "===-=-");checktoggleButton();// 当点回到wifi界面时，刷新button的状态
                        }});toggleButton.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {Log.i("111", isChecked + "/" + WifiAdmin.getWifiAdmin().checkState());if (isChecked) {WifiAdmin.getWifiAdmin().OpenWifi();frag_detail.setWifiShow();// toggleButton.setText("关闭");toggleButton.setChecked(false);isChecked = false;} else {WifiAdmin.getWifiAdmin().CloseWife();frag_detail.setWifiShow();// toggleButton.setText("打开");toggleButton.setChecked(true);isChecked = true;}toggleButton.setClickable(false);}});}//
        public void checktoggleButton() {if (WifiAdmin.getWifiAdmin().checkState() == 1) {toggleButton.setChecked(true);isChecked = true;}if (WifiAdmin.getWifiAdmin().checkState() == 3) {toggleButton.setChecked(false);isChecked = false;}}public void setView() {wifi = (TextView) getView().findViewById(R.id.wifi);toggleButton = (ToggleButton) getView().findViewById(R.id.toggleButton);saveBut = (TextView) getView().findViewById(R.id.saveBut);// 实例化右面界面，以便操纵里面的方法Ffrag_detail = (FragementDetails) getFragmentManager().findFragmentById(R.id.frag_detail);// 初始化button的装态if (WifiAdmin.getWifiAdmin().checkState() == 3) {toggleButton.setChecked(false);isChecked = false;}if (WifiAdmin.getWifiAdmin().checkState() == 1) {toggleButton.setChecked(true);isChecked = true;}toggleButton.setClickable(true);}@Overridepublic void onDestroy() {frag_detail.stopWifiThread();butIsRunning = false;super.onDestroy();}private void startThread() {butIsRunning = true;new Thread(new Runnable() {@Overridepublic void run() {while (butIsRunning) {//只有wifi状态改变变化完毕之后才能允许点击按钮if (WifiAdmin.getWifiAdmin().checkState() == 3) {if (!isChecked) {toggleButton.setClickable(true);}} else if (WifiAdmin.getWifiAdmin().checkState() == 1) {if (isChecked) {toggleButton.setClickable(true);}}}}}).start();}}

10、右面fragment界面类

package co.cm.fragement;import java.util.ArrayList;
import java.util.List;
import co.cm.fragement.R;
import android.app.Fragment;
import android.net.wifi.ScanResult;
import android.net.wifi.WifiConfiguration;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.RelativeLayout;
import android.widget.TextView;/*** @author yangyu*        功能描述：右面fragment界面类，该类实现了右面显示的操作*/
public class FragementDetails extends Fragment {private TextView mac_address, bssid, ip_address, id, info, wifiText;private ListView listView;private LinearLayout wifiLinear;private RelativeLayout save, wifi;private boolean ThreadFlag = false;//wifi数据适配器private WifiAdapter wifiAdapter;// 扫描出的网络连接列表private List<ScanResult> mWifiList = new ArrayList<ScanResult>();// 网络连接列表private List<WifiConfiguration> mWifiConfiguration = null;private int nowWifiState = 0;@Overridepublic View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {return inflater.inflate(R.layout.frag_detail, container, false);}@Overridepublic void onActivityCreated(Bundle savedInstanceState) {super.onActivityCreated(savedInstanceState);setView();// setListener();
                setWifiShow();}/*** 显示wifi界面*/public void setWifiShow() {        //通过隐藏显示来达到不同页面内容的切换
                save.setVisibility(View.GONE);wifi.setVisibility(View.VISIBLE);stopWifiThread();refreshWifi();}/*** 显示保存界面*/public void setSaveShow() {stopWifiThread();save.setVisibility(View.VISIBLE);wifi.setVisibility(View.GONE);}/*** 初始化组件*/public void setView() {// -----------------wifi-----------------wifiText = (TextView) getView().findViewById(R.id.wifiText);mac_address = (TextView) getView().findViewById(R.id.mac_address);bssid = (TextView) getView().findViewById(R.id.bssid);ip_address = (TextView) getView().findViewById(R.id.ip_address);id = (TextView) getView().findViewById(R.id.id);info = (TextView) getView().findViewById(R.id.info);listView = (ListView) getView().findViewById(R.id.listview);wifiLinear = (LinearLayout) getView().findViewById(R.id.wifiLinear);save = (RelativeLayout) getView().findViewById(R.id.save);wifi = (RelativeLayout) getView().findViewById(R.id.wifi);wifiAdapter = new WifiAdapter();listView.setAdapter(wifiAdapter);}private Handler handler = new Handler() {@Overridepublic void handleMessage(Message msg) {nowWifiState = WifiAdmin.getWifiAdmin().checkState();// 当wifi打开时，刷新wifi列表的内容if (nowWifiState == 3) {mWifiList = WifiAdmin.getWifiAdmin().GetWifiList();// 如果刚开始检测的wifi列表为空，则创建一个实例化的wifi而不是null，负责会在adpter里面报错if (mWifiList != null) {// 如果wifi列表发生改变，则更新，else不更新if (!mWifiList.toString().equals(WifiAdmin.getWifiAdmin().getLastWifiList().toString())) {WifiAdmin.getWifiAdmin().setLastWifiList(mWifiList);wifiAdapter.notifyDate();}} else {mWifiList = new ArrayList<ScanResult>();}}refreshMeathod();super.handleMessage(msg);}};/*** 刷新wifi的状态 */public void refreshWifi() {new Thread(new Runnable() {@Overridepublic void run() {ThreadFlag = true;while (ThreadFlag) {// Log.i("111", WifiAdmin.getWifiAdmin().checkState() +// "!!!");Message msg = handler.obtainMessage();handler.sendMessage(msg);try {Thread.sleep(1000);} catch (InterruptedException e) {e.printStackTrace();}}}}).start();}public void refreshMeathod() {                // 此处可用switchif (nowWifiState == 3) {                wifiLinear.setVisibility(View.VISIBLE);wifiText.setVisibility(View.INVISIBLE);mac_address.setText(WifiAdmin.getWifiAdmin().GetMacAddress() + "");bssid.setText(WifiAdmin.getWifiAdmin().GetBSSID() + "");ip_address.setText(WifiAdmin.getWifiAdmin().GetIPAddress() + "");id.setText(WifiAdmin.getWifiAdmin().GetNetworkId() + "");info.setText(WifiAdmin.getWifiAdmin().GetWifiInfo() + "");                        } else if (nowWifiState == 1) {wifiText.setVisibility(View.VISIBLE);wifiLinear.setVisibility(View.INVISIBLE);wifiText.setText("要查看可用的网络，请打开wifi");} else if (nowWifiState == 2) {wifiText.setVisibility(View.VISIBLE);wifiLinear.setVisibility(View.INVISIBLE);wifiText.setText("wifi正在打开");} else if (nowWifiState == 4) {wifiText.setVisibility(View.VISIBLE);wifiLinear.setVisibility(View.INVISIBLE);wifiText.setText("wifi正在关闭");} else {wifiText.setVisibility(View.VISIBLE);wifiLinear.setVisibility(View.INVISIBLE);wifiText.setText("我不知道wifi正在做什么");}}public void stopWifiThread() {ThreadFlag = false;}public class WifiAdapter extends BaseAdapter {@Overridepublic int getCount() {                        return mWifiList.size();}@Overridepublic Object getItem(int position) {return mWifiList.get(position);}@Overridepublic long getItemId(int position) {return position;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {View view = convertView;final ChatViewHolder vh;if (convertView == null) {vh = new ChatViewHolder();view = View.inflate(WifiAdmin.getWifiAdmin().getmContext(),R.layout.wifi_list, null);vh.wifi_name = (TextView) view.findViewById(R.id.wifi_name);vh.wifi_name_state = (TextView) view.findViewById(R.id.wifi_name_state);view.setTag(vh);} else {vh = (ChatViewHolder) view.getTag();}vh.wifi_name.setText(mWifiList.get(position).SSID.toString());// 网络的名字，唯一区别WIFI网络的名字vh.wifi_name_state.setText(mWifiList.get(position).level + "");return view;}public void notifyDate() {notifyDataSetChanged();}}public class ChatViewHolder {TextView wifi_name;// 网络的名字，唯一区别WIFI网络的名字TextView wifi_name_state;// 所发现的WIFI网络信号强度
        }}

11、wifiAdmin类，提供了wifi操作的方法，WifiAdmin.java：

package co.cm.fragement;import java.util.ArrayList;
import java.util.List;import android.content.Context;
import android.net.wifi.ScanResult;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;
import android.net.wifi.WifiManager.WifiLock;
import android.util.Log;/*** @author yangyu*        wifiAdmin提供了wifi操作的方法*/
public class WifiAdmin {private static WifiAdmin wifiAdmin;private WifiManager mWifiManager = null;private WifiInfo mWifiInfo = null;// 扫描出的网络连接列表private List<ScanResult> mWifiList = new ArrayList<ScanResult>();// 扫描出的网络连接列表private List<ScanResult> lastWifiList = new ArrayList<ScanResult>();// 网络连接列表private List<WifiConfiguration> mWifiConfiguration = null;private WifiLock mWifiLock = null;// 上次网络状态private int lastWifiState = 0;//定义上下文Context
        Context mContext;public List<ScanResult> getLastWifiList() {return lastWifiList;}public void setLastWifiList(List<ScanResult> lastWifiList) {this.lastWifiList = lastWifiList;}public int getLastWifiState() {return lastWifiState;}public void setLastWifiState(int lastWifiState) {this.lastWifiState = lastWifiState;}public static WifiAdmin getWifi() {return wifiAdmin;}public Context getmContext() {return mContext;}public void setmContext(Context mContext) {this.mContext = mContext;}public static WifiAdmin getWifiAdmin() {if (wifiAdmin == null) {wifiAdmin = new WifiAdmin();}return wifiAdmin;}public void getWifiMeathod() {mWifiManager = (WifiManager) mContext.getSystemService(mContext.WIFI_SERVICE);mWifiInfo = mWifiManager.getConnectionInfo();}/*** 打开wifi*/public void OpenWifi() {if (!mWifiManager.isWifiEnabled()) {mWifiManager.setWifiEnabled(true);} else {Log.i("111", "open 失败");}}/*** 关闭wifi */public void CloseWife() {if (mWifiManager.isWifiEnabled()) {mWifiManager.setWifiEnabled(false);} else {Log.i("111", "close 失败");}}/*** 锁定wifi*/public void lockWifi() {mWifiLock.acquire();}public void rlockWifi() {if (mWifiLock.isHeld()) {mWifiLock.acquire();}}// 检查当前wifi状态WIFI网卡的状态是由一系列的整形常量来表示的。//1.WIFI_STATE_DISABLED : WIFI网卡不可用（1）//2.WIFI_STATE_DISABLING : WIFI网卡正在关闭（0）//3.WIFI_STATE_ENABLED : WIFI网卡可用（3）//4.WIFI_STATE_ENABLING : WIFI网正在打开（2） （WIFI启动需要一段时间）//5.WIFI_STATE_UNKNOWN : 未知网卡状态public int checkState() {return mWifiManager.getWifiState();}/*** 创建一个wifilock*/public void Createwifilock() {mWifiLock = mWifiManager.createWifiLock("Testss");}/*** 得到配置好的网络* @return*/public List<WifiConfiguration> GetConfinguration() {return mWifiConfiguration;}/*** 连接配置好的指定ID的网络* @param index*/public void ConnectConfiguration(int index) {if (index > mWifiConfiguration.size()) {return;}mWifiManager.enableNetwork(mWifiConfiguration.get(index).networkId,true);}/*** 开始扫描网络*/public void StartScan() {mWifiManager.startScan();// 得到扫描结果mWifiList = mWifiManager.getScanResults();// 得到配置好的网络连接mWifiConfiguration = mWifiManager.getConfiguredNetworks();}/*** 得到网络列表* @return*/public List<ScanResult> GetWifiList() {mWifiManager.startScan();// 得到扫描结果mWifiList = mWifiManager.getScanResults();return mWifiList;}public List<WifiConfiguration> getmWifiConfiguration() {return mWifiConfiguration;}/*** 查看扫描结果*/public StringBuilder LookUpScan() {StringBuilder stringBuilder = new StringBuilder();for (int i = 0; i < mWifiList.size(); i++) {stringBuilder.append("Index_" + new Integer(i + 1).toString() + ":");// 将ScanResult信息转换成一个字符串包// 其中把包括：BSSID、SSID、capabilities、frequency、levelstringBuilder.append((mWifiList.get(i)).toString());stringBuilder.append("\n");}return stringBuilder;}/*** 得到MAC地址*/public String GetMacAddress() {return (mWifiInfo == null) ? "NULL" : mWifiInfo.getMacAddress();}/*** 得到接入点的BSSID*/public String GetBSSID() {return (mWifiInfo == null) ? "NULL" : mWifiInfo.getBSSID();}/*** 得到IP地址*/public int GetIPAddress() {return (mWifiInfo == null) ? 0 : mWifiInfo.getIpAddress();}/*** 得到连接的ID*/public int GetNetworkId() {return (mWifiInfo == null) ? 0 : mWifiInfo.getNetworkId();}/*** 得到WifiInfo的所有信息包*/public String GetWifiInfo() {return (mWifiInfo == null) ? "NULL" : mWifiInfo.toString();}/*** 添加一个网络并连接*/public void AddNetwork(WifiConfiguration wcg) {int wcgID = mWifiManager.addNetwork(wcg);mWifiManager.enableNetwork(wcgID, true);}/*** 断开指定ID的网络*/public void DisconnectWifi(int netId) {mWifiManager.disableNetwork(netId);mWifiManager.disconnect();}
}

小结： 当我们需要在一个界面中处理很多事情的时候，可以推荐使用fragment，因为他会把我们的activity分割成很多小块，每个小块都有他的生命周期，非常方便，而有时我们会用单例模式来存储每个页面都有的东西。

实例讲解二

项目的效果图       

            

 项目结构目录

代码具体编写

1、标题栏的布局界面，title_view.xml：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="50dip"android:background="@drawable/title_bg"android:orientation="horizontal" ><Buttonandroid:id="@+id/left_btn"style="@style/Text.Title_Button"android:layout_width="wrap_content"android:layout_height="35dip"android:layout_gravity="center_vertical"android:background="@drawable/title_btn_back"android:minWidth="60dip" /><TextViewandroid:id="@+id/title_text"style="@style/Text.Title"android:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_gravity="center_vertical"android:layout_weight="1" /><Buttonandroid:id="@+id/right_btn"style="@style/Text.Title_Button"android:layout_width="wrap_content"android:layout_height="35dip"android:layout_gravity="center_vertical"android:background="@drawable/title_btn"android:minWidth="70dip" /></LinearLayout>

2、首页的fragment页面，这里就列出一个，fragment_home.xml：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><com.eoe.tampletfragment.view.TitleViewandroid:id="@+id/title"android:layout_width="fill_parent"android:layout_height="wrap_content" /><TextViewandroid:id="@+id/fragment_home_text"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="@string/fragment_home_text"android:textSize="18sp" /></LinearLayout>

3、帮助Activity界面，activity_help.xml：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:background="@drawable/activity_bg"android:orientation="vertical" ><com.eoe.tampletfragment.view.TitleViewandroid:id="@+id/title"android:layout_width="fill_parent"android:layout_height="wrap_content" /></LinearLayout>

4、主页面布局，activity_main.xml：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:background="@drawable/activity_bg"android:orientation="vertical" ><fragmentandroid:id="@+id/fragment_home"android:layout_width="fill_parent"android:layout_height="fill_parent"android:layout_weight="1"class="com.eoe.tampletfragment.fragment.HomeFragment" /><fragmentandroid:id="@+id/fragment_search"android:layout_width="fill_parent"android:layout_height="fill_parent"android:layout_weight="1"class="com.eoe.tampletfragment.fragment.SearchFragment" /><fragmentandroid:id="@+id/fragment_settings"android:layout_width="fill_parent"android:layout_height="fill_parent"android:layout_weight="1"class="com.eoe.tampletfragment.fragment.SettingsFragment" /><com.eoe.tampletfragment.fragment.FragmentIndicatorandroid:id="@+id/indicator"android:layout_width="fill_parent"android:layout_height="wrap_content"android:background="@drawable/tab_footer_bg" /></LinearLayout>

详细说明：  <1> 主页面MainActivity继承自FragmentActivity类，负责实现导航按钮所对应页面的显示和隐藏。
（详细实现见源码）
  <2> 主页面由底部导航栏和面板组成。  <3> fragment标签所对应Fragment的实现类。
  <4> com.eoe.tampletfragment.fragment.FragmentIndicator标签所对应的是底部导航栏。   
5、自定义顶部工具栏，TitleView.java：

package com.eoe.tampletfragment.view;import android.content.Context;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.Button;
import android.widget.FrameLayout;
import android.widget.TextView;import com.eoe.tampletfragment.R;/*** @author yangyu*        功能描述：自定义顶部工具栏*/
public class TitleView extends FrameLayout implements View.OnClickListener {private Button mLeftBtn;private Button mRightBtn;private TextView mTitle;private OnLeftButtonClickListener mOnLeftButtonClickListener;private OnRightButtonClickListener mOnRightButtonClickListener;public interface OnLeftButtonClickListener {public void onClick(View button);}public interface OnRightButtonClickListener {public void onClick(View button);}public void setLeftButton(String text, OnLeftButtonClickListener listener) {mLeftBtn.setText(text);mLeftBtn.setVisibility(View.VISIBLE);mOnLeftButtonClickListener = listener;}public void setLeftButton(int stringID, OnLeftButtonClickListener listener) {mLeftBtn.setText(stringID);mLeftBtn.setVisibility(View.VISIBLE);mOnLeftButtonClickListener = listener;}public void removeLeftButton() {mLeftBtn.setText("");mLeftBtn.setVisibility(View.INVISIBLE);mOnLeftButtonClickListener = null;}public void hiddenLeftButton() {mLeftBtn.setVisibility(View.INVISIBLE);}public void showLeftButton() {mLeftBtn.setVisibility(View.VISIBLE);}public void setRightButton(String text, OnRightButtonClickListener listener) {mRightBtn.setText(text);mRightBtn.setVisibility(View.VISIBLE);mOnRightButtonClickListener = listener;}public void setRightButton(int stringID, OnRightButtonClickListener listener) {mRightBtn.setText(stringID);mRightBtn.setVisibility(View.VISIBLE);mOnRightButtonClickListener = listener;}public void removeRightButton() {mRightBtn.setText("");mRightBtn.setVisibility(View.INVISIBLE);mOnRightButtonClickListener = null;}public void hiddenRightButton() {mRightBtn.setVisibility(View.INVISIBLE);}public void showRightButton() {mRightBtn.setVisibility(View.VISIBLE);}public TitleView(Context context) {this(context, null);}public TitleView(Context context, AttributeSet attrs) {this(context, attrs, 0);}public TitleView(Context context, AttributeSet attrs, int defStyle) {super(context, attrs, defStyle);LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);inflater.inflate(R.layout.title_view, this, true);mLeftBtn = (Button) findViewById(R.id.left_btn);mLeftBtn.setVisibility(View.INVISIBLE);mLeftBtn.setOnClickListener(this);mRightBtn = (Button) findViewById(R.id.right_btn);mRightBtn.setVisibility(View.INVISIBLE);mRightBtn.setOnClickListener(this);mTitle = (TextView) findViewById(R.id.title_text);mTitle.setVisibility(View.INVISIBLE);}public void setTitle(String text) {mTitle.setVisibility(View.VISIBLE);mTitle.setText(text);}public void setTitle(int stringID) {mTitle.setVisibility(View.VISIBLE);mTitle.setText(stringID);}@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.left_btn:if(mOnLeftButtonClickListener != null)mOnLeftButtonClickListener.onClick(v);break;case R.id.right_btn:if(mOnRightButtonClickListener != null)mOnRightButtonClickListener.onClick(v);break;}}}

6、自定义底部工具栏，FragmentIndicator.java：

package com.eoe.tampletfragment.fragment;import android.content.Context;
import android.graphics.Color;
import android.util.AttributeSet;
import android.util.TypedValue;
import android.view.Gravity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;import com.eoe.tampletfragment.R;/*** @author yangyu*        功能描述：自定义底部工具栏*/
public class FragmentIndicator extends LinearLayout implements OnClickListener {private int mDefaultIndicator = 0;private static int mCurIndicator;private static View[] mIndicators;private OnIndicateListener mOnIndicateListener;private static final String TAG_ICON_0 = "icon_tag_0";private static final String TAG_ICON_1 = "icon_tag_1";private static final String TAG_ICON_2 = "icon_tag_2";private static final String TAG_TEXT_0 = "text_tag_0";private static final String TAG_TEXT_1 = "text_tag_1";private static final String TAG_TEXT_2 = "text_tag_2";private static final int COLOR_UNSELECT = Color.argb(100, 0xff, 0xff, 0xff);private static final int COLOR_SELECT = Color.WHITE;private FragmentIndicator(Context context) {super(context);}public FragmentIndicator(Context context, AttributeSet attrs) {super(context, attrs);mCurIndicator = mDefaultIndicator;setOrientation(LinearLayout.HORIZONTAL);init();}private View createIndicator(int iconResID, int stringResID, int stringColor, String iconTag, String textTag) {LinearLayout view = new LinearLayout(getContext());view.setOrientation(LinearLayout.VERTICAL);view.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, 1));view.setGravity(Gravity.CENTER_HORIZONTAL);ImageView iconView = new ImageView(getContext());iconView.setTag(iconTag);iconView.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, 1));iconView.setImageResource(iconResID);TextView textView = new TextView(getContext());textView.setTag(textTag);textView.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, 1));textView.setTextColor(stringColor);textView.setTextSize(TypedValue.COMPLEX_UNIT_SP, 16);textView.setText(stringResID);view.addView(iconView);view.addView(textView);return view;}private void init() {mIndicators = new View[3];mIndicators[0] = createIndicator(R.drawable.ic_home_focused,R.string.tab_home, COLOR_SELECT, TAG_ICON_0, TAG_TEXT_0);mIndicators[0].setBackgroundResource(R.drawable.indic_select);mIndicators[0].setTag(Integer.valueOf(0));mIndicators[0].setOnClickListener(this);addView(mIndicators[0]);mIndicators[1] = createIndicator(R.drawable.ic_search_normal,R.string.tab_search, COLOR_UNSELECT, TAG_ICON_1, TAG_TEXT_1);mIndicators[1].setBackgroundColor(Color.alpha(0));mIndicators[1].setTag(Integer.valueOf(1));mIndicators[1].setOnClickListener(this);addView(mIndicators[1]);mIndicators[2] = createIndicator(R.drawable.ic_settings_normal,R.string.tab_settings, COLOR_UNSELECT, TAG_ICON_2, TAG_TEXT_2);mIndicators[2].setBackgroundColor(Color.alpha(0));mIndicators[2].setTag(Integer.valueOf(2));mIndicators[2].setOnClickListener(this);addView(mIndicators[2]);}public static void setIndicator(int which) {// clear previous status.mIndicators[mCurIndicator].setBackgroundColor(Color.alpha(0));ImageView prevIcon;TextView prevText;switch(mCurIndicator) {case 0:prevIcon =(ImageView) mIndicators[mCurIndicator].findViewWithTag(TAG_ICON_0);prevIcon.setImageResource(R.drawable.ic_home_normal);prevText = (TextView) mIndicators[mCurIndicator].findViewWithTag(TAG_TEXT_0);prevText.setTextColor(COLOR_UNSELECT);break;case 1:prevIcon =(ImageView) mIndicators[mCurIndicator].findViewWithTag(TAG_ICON_1);prevIcon.setImageResource(R.drawable.ic_search_normal);prevText = (TextView) mIndicators[mCurIndicator].findViewWithTag(TAG_TEXT_1);prevText.setTextColor(COLOR_UNSELECT);break;case 2:prevIcon =(ImageView) mIndicators[mCurIndicator].findViewWithTag(TAG_ICON_2);prevIcon.setImageResource(R.drawable.ic_settings_normal);prevText = (TextView) mIndicators[mCurIndicator].findViewWithTag(TAG_TEXT_2);prevText.setTextColor(COLOR_UNSELECT);break;}// update current status.
                mIndicators[which].setBackgroundResource(R.drawable.indic_select);ImageView currIcon;TextView currText;switch(which) {case 0:currIcon =(ImageView) mIndicators[which].findViewWithTag(TAG_ICON_0);currIcon.setImageResource(R.drawable.ic_home_focused);currText = (TextView) mIndicators[which].findViewWithTag(TAG_TEXT_0);currText.setTextColor(COLOR_SELECT);break;case 1:currIcon =(ImageView) mIndicators[which].findViewWithTag(TAG_ICON_1);currIcon.setImageResource(R.drawable.ic_search_focused);currText = (TextView) mIndicators[which].findViewWithTag(TAG_TEXT_1);currText.setTextColor(COLOR_SELECT);break;case 2:currIcon =(ImageView) mIndicators[which].findViewWithTag(TAG_ICON_2);currIcon.setImageResource(R.drawable.ic_settings_focused);currText = (TextView) mIndicators[which].findViewWithTag(TAG_TEXT_2);currText.setTextColor(COLOR_SELECT);break;}mCurIndicator = which;}public interface OnIndicateListener {public void onIndicate(View v, int which);}public void setOnIndicateListener(OnIndicateListener listener) {mOnIndicateListener = listener;}@Overridepublic void onClick(View v) {if (mOnIndicateListener != null) {int tag = (Integer) v.getTag();switch (tag) {case 0:if (mCurIndicator != 0) {mOnIndicateListener.onIndicate(v, 0);setIndicator(0);}break;case 1:if (mCurIndicator != 1) {mOnIndicateListener.onIndicate(v, 1);setIndicator(1);}break;case 2:if (mCurIndicator != 2) {mOnIndicateListener.onIndicate(v, 2);setIndicator(2);}break;default:break;}}}
}

7、首页fragment页面，HomeFragment.java：

package com.eoe.tampletfragment.fragment;import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;import com.eoe.tampletfragment.HelpActivity;
import com.eoe.tampletfragment.R;
import com.eoe.tampletfragment.view.TitleView;
import com.eoe.tampletfragment.view.TitleView.OnLeftButtonClickListener;
import com.eoe.tampletfragment.view.TitleView.OnRightButtonClickListener;/*** @author yangyu*        功能描述：首页fragment页面*/
public class HomeFragment extends Fragment {private View mParent;private FragmentActivity mActivity;private TitleView mTitle;private TextView mText;/*** Create a new instance of DetailsFragment, initialized to show the text at* 'index'.*/public static HomeFragment newInstance(int index) {HomeFragment f = new HomeFragment();// Supply index input as an argument.Bundle args = new Bundle();args.putInt("index", index);f.setArguments(args);return f;}public int getShownIndex() {return getArguments().getInt("index", 0);}@Overridepublic View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {View view = inflater.inflate(R.layout.fragment_home, container, false);return view;}@Overridepublic void onActivityCreated(Bundle savedInstanceState) {super.onActivityCreated(savedInstanceState);mActivity = getActivity();mParent = getView();mTitle = (TitleView) mParent.findViewById(R.id.title);mTitle.setTitle(R.string.title_home);mTitle.setLeftButton(R.string.exit, new OnLeftButtonClickListener(){@Overridepublic void onClick(View button) {mActivity.finish();}});mTitle.setRightButton(R.string.help, new OnRightButtonClickListener() {@Overridepublic void onClick(View button) {goHelpActivity();}});mText = (TextView) mParent.findViewById(R.id.fragment_home_text);}private void goHelpActivity() {Intent intent = new Intent(mActivity, HelpActivity.class);startActivity(intent);}@Overridepublic void onHiddenChanged(boolean hidden) {super.onHiddenChanged(hidden);}@Overridepublic void onDestroy() {super.onDestroy();}}

8、Activity帮助界面，HelpActivity.java：

package com.eoe.tampletfragment;import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.view.Window;/*** @author yangyu*        功能描述：帮助Activity界面*/
public class HelpActivity extends FragmentActivity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);requestWindowFeature(Window.FEATURE_NO_TITLE);        setContentView(R.layout.activity_help);}}

9、Activity主界面，MainActivity.java：

package com.eoe.tampletfragment;import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.view.View;
import android.view.Window;import com.eoe.tampletfragment.fragment.FragmentIndicator;
import com.eoe.tampletfragment.fragment.FragmentIndicator.OnIndicateListener;/*** @author yangyu*        功能描述：主Activity类，继承自FragmentActivity*/
public class MainActivity extends FragmentActivity {public static Fragment[] mFragments;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);requestWindowFeature(Window.FEATURE_NO_TITLE);setContentView(R.layout.activity_main);setFragmentIndicator(0);}/*** 初始化fragment*/private void setFragmentIndicator(int whichIsDefault) {mFragments = new Fragment[3];mFragments[0] = getSupportFragmentManager().findFragmentById(R.id.fragment_home);mFragments[1] = getSupportFragmentManager().findFragmentById(R.id.fragment_search);mFragments[2] = getSupportFragmentManager().findFragmentById(R.id.fragment_settings);getSupportFragmentManager().beginTransaction().hide(mFragments[0]).hide(mFragments[1]).hide(mFragments[2]).show(mFragments[whichIsDefault]).commit();FragmentIndicator mIndicator = (FragmentIndicator) findViewById(R.id.indicator);FragmentIndicator.setIndicator(whichIsDefault);mIndicator.setOnIndicateListener(new OnIndicateListener() {@Overridepublic void onIndicate(View v, int which) {getSupportFragmentManager().beginTransaction().hide(mFragments[0]).hide(mFragments[1]).hide(mFragments[2]).show(mFragments[which]).commit();}});}@Overrideprotected void onResume() {super.onResume();}@Overrideprotected void onPause() {super.onPause();}}

 

     

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