搞了好几天终于有点眉目了，这里接着总结一下Android中WiFi的使用，在前面（）我们已经简单了解了Wifi实际操作中所用到的几个主要类，今天就剖析一个WIFI搜索、创建、关闭、连接及一些简单的动画的综合案例。

 

首先，我们还是看一下我们项目的框架

MainActivity类：（处理wifi消息，加载UI）

 

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/**   * 主界面   * @author ZHF   *   */ public  class  MainActivity  extends  Activity  implements  EventHandler{      //消息事件      public  static  final  int  m_nWifiSearchTimeOut =  0 ; // 搜索超时      public  static  final  int  m_nWTScanResult =  1 ; // 搜索到wifi返回结果      public  static  final  int  m_nWTConnectResult =  2 ; // 连接上wifi热点      public  static  final  int  m_nCreateAPResult =  3 ; // 创建热点结果      public  static  final  int  m_nUserResult =  4 ; // 用户上线人数更新命令(待定)      public  static  final  int  m_nWTConnected =  5 ; // 点击连接后断开wifi，3.5秒后刷新adapter                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               //一些常量      public  static  final  String PACKAGE_NAME =  "com.zhf.wifidemo.wifi" ;   //应用包名      public  static  final  String FIRST_OPEN_KEY =  "version" ;   //版本号信息      public  static  final  String WIFI_AP_HEADER =  "zhf_" ;      public  static  final  String WIFI_AP_PASSWORD = "zhf12345" ;      //wifi操作事件（枚举）-->方便弹出对话框处理事件      private  int  wFOperateEnum = WFOperateEnum.NOTHING;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               //三个重要的类      public  WFSearchProcess m_wtSearchProcess;  //WiFi搜索进度条线程      public  WifiAdmin m_wiFiAdmin;  //Wifi管理类      public  CreateAPProcess m_createAPProcess;  //创建Wifi热点线程                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               //相关控件      private  WFSearchAnimationFrameLayout m_FrameLWTSearchAnimation;   //自定义雷达动画布局      private  GifView m_gifRadar;   //wifi信号动画布局                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       private  LinearLayout m_linearLCreateAP;  //创建热点View      private  ProgressBar m_progBarCreatingAP;  //创建热点进度条      private  TextView m_textVPromptAP;  //创建热点进度条文字                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               private  Button m_btnBack;  //左上角返回按钮      private  Button m_btnSearchWF;  //右上角wifi搜索按钮      private  Button m_btnCreateWF;  //创建wifi热点      private  ListView m_listVWT;  //显示信息                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               private  LinearLayout m_LinearLDialog;  //提醒对话框      private  TextView m_textVContentDialog;   //对话框文本内容      private  Button m_btnConfirmDialog, m_btnCancelDialog;  //提醒对话框上的按钮                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               private  TextView m_textVWTPrompt;  //中间文字提示                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               private  boolean  m_isFirstOpen =  true ;   //标记是否是第一次打开      ArrayList<ScanResult> m_listWifi =  new  ArrayList(); //检测到热点信息列表      private  WTAdapter m_wTAdapter;  //网络列表适配器      public  Handler mHandler =  new  Handler() {          public  void  handleMessage(android.os.Message msg) {              switch  (msg.what) {              case  m_nWifiSearchTimeOut:  // 搜索超时                  m_wtSearchProcess.stop();                  m_FrameLWTSearchAnimation.stopAnimation();                  m_listWifi.clear();   //网络列表                  //设置控件                  m_textVWTPrompt.setVisibility(View.VISIBLE);                  m_textVWTPrompt.setText( "需要重新搜索，点右上角重新搜索或创建新的热点..." );                  break ;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   case  m_nWTScanResult:   //扫描到结果                  m_listWifi.clear();                  if (m_wiFiAdmin.mWifiManager.getScanResults() !=  null ) {                      for  ( int  i =  0 ; i < m_wiFiAdmin.mWifiManager.getScanResults().size(); i++) {                          ScanResult scanResult = m_wiFiAdmin.mWifiManager.getScanResults().get(i);                          //和指定连接热点比较，将其他的过滤掉！                          if (scanResult.SSID.startsWith(WIFI_AP_HEADER)) {                              m_listWifi.add(scanResult);                          }                      }                      if (m_listWifi.size() >  0 ) {                          m_wtSearchProcess.stop();                          m_FrameLWTSearchAnimation.stopAnimation();                          m_textVWTPrompt.setVisibility(View.GONE);                          //更新列表，显示出搜索到的热点                          m_wTAdapter.setData(m_listWifi);                          m_wTAdapter.notifyDataSetChanged();                      }                  }                  break ;              case  m_nWTConnectResult:   //连接结果                  m_wTAdapter.notifyDataSetChanged();  //刷新适配器数据                  break ;              case  m_nCreateAPResult:   //创建wifi热点结果                  m_createAPProcess.stop();                  m_progBarCreatingAP.setVisibility(View.GONE);  //旋转进度条                  if ((m_wiFiAdmin.getWifiApState() ==  3  || m_wiFiAdmin.getWifiApState() ==  13 ) && (m_wiFiAdmin.getApSSID().startsWith(WIFI_AP_HEADER))) {                      //设置控件                      m_textVWTPrompt.setVisibility(View.GONE);                      m_linearLCreateAP.setVisibility(View.VISIBLE);                      m_btnCreateWF.setVisibility(View.VISIBLE);                      m_gifRadar.setVisibility(View.VISIBLE);                      m_btnCreateWF.setBackgroundResource(R.drawable.x_ap_close);                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               m_textVPromptAP.setText( "热点创建成功！" +  "\n热点名：" + m_wiFiAdmin.getApSSID()+  "\n连接密码：zhf12345" );                  }  else  {                      m_btnCreateWF.setVisibility(View.VISIBLE);                      m_btnCreateWF.setBackgroundResource(R.drawable.x_wt_create);                      m_textVPromptAP.setText( "热点创建失败，您可以重新创建或者搜索其它热点" );                  }                  break ;              case  m_nUserResult :                  //更新用户上线人数                  break ;              case  m_nWTConnected:   //点击连接后断开wifi，3.5s后刷新                  m_wTAdapter.notifyDataSetChanged();                  break ;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               }          };      };      @Override      public  void  onCreate(Bundle savedInstanceState) {          super .onCreate(savedInstanceState);          setContentView(R.layout.wt_main);          //搜索Wifi          m_wtSearchProcess =  new  WFSearchProcess( this );          //创建Wifi热点          m_createAPProcess =  new  CreateAPProcess( this );          //wifi管理类          m_wiFiAdmin  = WifiAdmin.getInstance( this );                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       //初始化View          initView();      }                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               /**初始化View**/      private  void  initView() {          // 监听广播          WIFIBroadcast.ehList.add( this );                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       /******************************实例化布局**************************************/          m_linearLCreateAP = (LinearLayout) findViewById(R.id.create_ap_llayout_wt_main);   //创建热点View          m_progBarCreatingAP = (ProgressBar) findViewById(R.id.creating_progressBar_wt_main);   //创建热点进度条          m_textVPromptAP = (TextView) findViewById(R.id.prompt_ap_text_wt_main);  //创建热点进度条文字                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       m_FrameLWTSearchAnimation = ((WFSearchAnimationFrameLayout) findViewById(R.id.search_animation_wt_main)); // 搜索时的动画          m_listVWT = ((ListView) findViewById(R.id.wt_list_wt_main)); // 搜索到的热点listView          //注意此处          m_wTAdapter =  new  WTAdapter( this , m_listWifi);          m_listVWT.setAdapter(m_wTAdapter);          m_textVWTPrompt = (TextView) findViewById(R.id.wt_prompt_wt_main);  //中间提醒文字          m_gifRadar = (GifView) findViewById(R.id.radar_gif_wt_main);  //gif动画          //提醒对话框布局          m_LinearLDialog = (LinearLayout) findViewById(R.id.dialog_layout_wt_main);          m_textVContentDialog = (TextView) findViewById(R.id.content_text_wtdialog);          m_btnConfirmDialog = (Button) findViewById(R.id.confirm_btn_wtdialog);          m_btnCancelDialog = (Button) findViewById(R.id.cancel_btn_wtdialog);                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       //左上角返回键          m_btnBack = (Button) findViewById(R.id.back_btn_wt_main);          m_btnBack.setOnClickListener( new  OnClickListener() {              @Override              public  void  onClick(View v) {                  onBackPressed();  //相当于调用系统返回键，结束当前Activity              }          });                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       //右上角搜索热点按钮          m_btnSearchWF = (Button) findViewById(R.id.search_btn_wt_main);          m_btnSearchWF.setOnClickListener( new  OnClickListener() {              @Override              public  void  onClick(View v) {                  if (!m_wtSearchProcess.running) {  //搜索线程没有开启                      //1.当前热点或wifi连接着    WIFI_STATE_ENABLED 3 //WIFI_AP_STATE_ENABLED  13                      if (m_wiFiAdmin.getWifiApState() ==  3  || m_wiFiAdmin.getWifiApState() ==  13 ) {                          wFOperateEnum = WFOperateEnum.SEARCH;  //搜索wifi事件                          m_LinearLDialog.setVisibility(View.VISIBLE);  ///wifi提示对话框显示                          m_textVContentDialog.setText( "是否关闭当前热点去搜索其他热点？" );                          return ;   //跳出此方法，交由对话框来处理事件                      }                      //2.当前没有热点或wifi连接着                      if (!m_wiFiAdmin.mWifiManager.isWifiEnabled()) {  //如果wifi没打开                          m_wiFiAdmin.OpenWifi();                      }                      m_textVWTPrompt.setVisibility(View.VISIBLE);  //中间提示文字                      m_textVWTPrompt.setText( "正在搜索附近的热点..." );                      m_linearLCreateAP.setVisibility(View.GONE);  //创建wifi热点布局消失                      m_gifRadar.setVisibility(View.GONE);  //热点连接动画消失                      m_btnCreateWF.setBackgroundResource(R.drawable.x_wt_create);  //更改按钮文字“创建”                      //开始搜索wifi                      m_wiFiAdmin.startScan();                      m_wtSearchProcess.start();  //开启搜索线程                      m_FrameLWTSearchAnimation.startAnimation();  //开启波纹动画                  } else  { //搜索线程开启着，再次点击按钮                      //重新启动                      m_wtSearchProcess.stop();                      m_wiFiAdmin.startScan();     //开始搜索wifi                      m_wtSearchProcess.start();                  }              }          });                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       //中间创建wifi热点按钮          m_btnCreateWF = (Button) findViewById(R.id.create_btn_wt_main);          m_btnCreateWF.setOnClickListener( new  OnClickListener() {              @Override              public  void  onClick(View v) {                  if (m_wiFiAdmin.getWifiApState() ==  4 ) {  // WIFI_STATE_UNKNOWN                      Toast.makeText(getApplicationContext(), "您的设备不支持热点创建!" , Toast.LENGTH_SHORT).show();                      return ;                  }                  if (m_wiFiAdmin.mWifiManager.isWifiEnabled()) {  //目前连着wifi                      wFOperateEnum = WFOperateEnum.CREATE;   //wifi热点创建事件                      m_LinearLDialog.setVisibility(View.VISIBLE);  //对话框可用                      m_textVContentDialog.setText( "创建热点会关闭当前的WiFi，确认继续？" );                      return ;                  }                  if ((m_wiFiAdmin.getWifiApState() ==  3  || m_wiFiAdmin.getWifiApState() ==  13 )                          && (!m_wiFiAdmin.getApSSID().startsWith(WIFI_AP_HEADER))) { //目前连接着其他热点名                      wFOperateEnum = WFOperateEnum.CREATE;   //wifi热点创建事件                      m_LinearLDialog.setVisibility(View.VISIBLE);                      m_textVContentDialog.setText( "系统热点被占用，点确定开启热点以传输文件！" );                      return ;                  }                  if  (((m_wiFiAdmin.getWifiApState() ==  3 ) || (m_wiFiAdmin.getWifiApState() ==  13 ))                          && (m_wiFiAdmin.getApSSID().startsWith(WIFI_AP_HEADER))) { //目前连接着自己指定的Wifi热点                      wFOperateEnum = WFOperateEnum.CLOSE;   //wifi热点关闭事件                      m_LinearLDialog.setVisibility(View.VISIBLE);                      m_textVContentDialog.setText( "关闭热点会中断当前传输，您确定这么做？" );                      return ;                  }                  if (m_wtSearchProcess.running) {                      m_wtSearchProcess.stop();  //停止线程                      m_FrameLWTSearchAnimation.stopAnimation();  //停止动画                  }                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       /******************点击创建热点时没有连接wifi或热点的情况*****************************/                  //关闭Wifi                  m_wiFiAdmin.closeWifi();                  //创建热点（名字，密码，加密类型,wifi/ap类型）                  m_wiFiAdmin.createWifiAP(m_wiFiAdmin.createWifiInfo(WIFI_AP_HEADER + getLocalHostName(), WIFI_AP_PASSWORD,  3 ,  "ap" ),  true );                  m_createAPProcess.start();  //开启创建热点线程                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       //将wifi信息列表设置到listview中                  m_listWifi.clear();                  m_wTAdapter.setData(m_listWifi);                  m_wTAdapter.notifyDataSetChanged();                  //设置布局                  m_linearLCreateAP.setVisibility(View.VISIBLE);  //热点布局可用                  m_progBarCreatingAP.setVisibility(View.VISIBLE);                  m_textVPromptAP.setText( "正在创建热点" );  //进度条文字                  m_btnCreateWF.setVisibility(View.GONE);  //点击一次不可再点                  m_textVWTPrompt.setVisibility(View.GONE);              }          });                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   //对话框确认按钮          m_btnConfirmDialog.setOnClickListener( new  OnClickListener() {              @Override              public  void  onClick(View v) {                  m_LinearLDialog.setVisibility(View.GONE);  //让对话框布局消失                  switch  (wFOperateEnum) {  //根据wifi操作事件                  case  WFOperateEnum.CLOSE:   //关闭wifi热点                      //设置布局                      m_textVWTPrompt.setVisibility(View.VISIBLE);                      m_textVWTPrompt.setText( "热点已关闭！可以进行其他操作了！" );  //中间提醒文字                      m_btnCreateWF.setBackgroundResource(R.drawable.x_wt_create);  //按钮文字改回“创建”                      m_gifRadar.setVisibility(View.GONE);  //热点动画停止                      m_linearLCreateAP.setVisibility(View.GONE);  //下部创建热点布局不可用                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               //关闭热点                      m_wiFiAdmin.createWifiAP(m_wiFiAdmin.createWifiInfo(m_wiFiAdmin.getApSSID(),  "zhf123456" ,  3 ,  "ap" ),  false );                      break ;                  case  WFOperateEnum.CREATE:   //创建wifi热点                      if (m_wtSearchProcess.running) {                          m_wtSearchProcess.stop();   //搜索wifi线程停止                          m_FrameLWTSearchAnimation.stopAnimation();  //搜索wifi动画停止                      }                      //关闭wifi                      m_wiFiAdmin.closeWifi();                      //创建WiFi热点                      m_wiFiAdmin.createWifiAP(m_wiFiAdmin.createWifiInfo(WIFI_AP_HEADER + getLocalHostName(), WIFI_AP_PASSWORD,  3 ,  "ap" ), true );                      m_createAPProcess.start();                      //刷新listView布局                      m_listWifi.clear();                      m_wTAdapter.setData(m_listWifi);                      m_wTAdapter.notifyDataSetChanged();                      //设置布局                      m_linearLCreateAP.setVisibility(View.VISIBLE);                      m_progBarCreatingAP.setVisibility(View.VISIBLE);  //旋转进度条                      m_btnCreateWF.setVisibility(View.GONE);                      m_textVWTPrompt.setVisibility(View.GONE);                      m_textVPromptAP.setText( "正在创建热点..." );  //进度条文字                      break ;                  case  WFOperateEnum.SEARCH:   //搜索可用热点                      //设置布局                      m_textVWTPrompt.setVisibility(View.VISIBLE);                      m_textVWTPrompt.setText( "正在搜索附近的热点..." );                      m_linearLCreateAP.setVisibility(View.GONE);  //创建热点布局不可用                      m_btnCreateWF.setVisibility(View.VISIBLE);                      m_btnCreateWF.setBackgroundResource(R.drawable.x_wt_create);  //按钮文字改回“创建”                      m_gifRadar.setVisibility(View.GONE);  //热点动画停止                      m_linearLCreateAP.setVisibility(View.GONE);  //下部创建热点布局不可用                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               //搜索热点线程关闭                      if  (m_createAPProcess.running)                          m_createAPProcess.stop();                      //关闭热点                      m_wiFiAdmin.createWifiAP(m_wiFiAdmin.createWifiInfo(m_wiFiAdmin.getApSSID(), WIFI_AP_PASSWORD,  3 ,  "ap" ), false );                      //打开wifi                      m_wiFiAdmin.OpenWifi();                      m_wtSearchProcess.start();                      m_FrameLWTSearchAnimation.startAnimation();                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               break ;                  }              }          });          //对话框取消按钮事件          m_btnCancelDialog.setOnClickListener( new  OnClickListener() {              @Override              public  void  onClick(View v) {                  //对话框布局消失                  m_LinearLDialog.setVisibility(View.GONE);              }          });      }                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               /**Wifi是否连接**/      private  boolean  isWifiConnect() {          boolean  isConnect =  true ;          //用于网络连接状态的检测          ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);          if (!cm.getNetworkInfo(ConnectivityManager.TYPE_WIFI).isConnected())              isConnect =  false ;          return  isConnect;      }      /**获取wifi热点状态**/      public  boolean  getWifiApState() {          try  {              WifiManager localWifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);              Method m = localWifiManager.getClass().getMethod( "getWifiApState" ,  new  Class[ 0 ]);              int  i = (Integer)(m.invoke(localWifiManager,  new  Object[ 0 ]));              return  ( 3  == i) || ( 13  == i);   //WIFI_STATE_ENABLED 3  //WIFI_AP_STATE_ENABLED  13          }  catch  (Exception e) {              e.printStackTrace();          }          return  false ;      }                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               /**获取手机信息**/      public  String getLocalHostName() {          String str1 = Build.BRAND;  //主板          String str2 = Build.MODEL;   //机型          if  (- 1  == str2.toUpperCase().indexOf(str1.toUpperCase()))              str2 = str1 +  "_"  + str2;          return  str2;      }                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               private  void  init() {          //线程是否在运行          if ( this .m_wtSearchProcess.running ||  this .m_createAPProcess.running) {              return ;          }          //没有连接上wifi或者是wifi热点          if (!isWifiConnect() && !getWifiApState()) {              m_wiFiAdmin.OpenWifi();              m_wtSearchProcess.start();  //开启搜索wifi超时检测线程              m_wiFiAdmin.startScan();  //开启搜索wifi              //开启搜索动画              m_FrameLWTSearchAnimation.startAnimation();                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               //设置控件              m_textVWTPrompt.setVisibility(View.VISIBLE);              m_textVWTPrompt.setText( " 正在搜索附近的热点..." );              m_linearLCreateAP.setVisibility(View.GONE);              m_btnCreateWF.setBackgroundResource(R.drawable.x_wt_create);          }          //连接上wifi          if (isWifiConnect()) {              this .m_wiFiAdmin.startScan();              this .m_wtSearchProcess.start();              this .m_FrameLWTSearchAnimation.startAnimation();              //设置控件              this .m_textVWTPrompt.setVisibility( 0 );              this .m_textVWTPrompt.setText( "正在搜索附近的热点..." );              this .m_linearLCreateAP.setVisibility(View.GONE);              this .m_btnCreateWF.setBackgroundResource(R.drawable.x_wt_create);              this .m_gifRadar.setVisibility(View.GONE);                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               m_listWifi.clear();              if (m_wiFiAdmin.mWifiManager.getScanResults() !=  null ) {                  for  ( int  i =  0 ; i < m_wiFiAdmin.mWifiManager.getScanResults().size(); i++) {                      //识别出自己自定连接的wifi                      if (m_wiFiAdmin.mWifiManager.getScanResults().get(i).SSID.startsWith(WIFI_AP_HEADER)) {                          m_listWifi.add(m_wiFiAdmin.mWifiManager.getScanResults().get(i));  //将指定wifi添加进去                      }                  }                  m_wTAdapter.setData(m_listWifi);  //将连接的信息添加到listView中                  m_wTAdapter.notifyDataSetChanged();              }              //连接上wifi热点              if (getWifiApState()){                  if (m_wiFiAdmin.getApSSID().startsWith(WIFI_AP_HEADER)) {                      //设置控件                      m_textVWTPrompt.setVisibility(View.GONE);                      m_linearLCreateAP.setVisibility(View.VISIBLE);                      m_progBarCreatingAP.setVisibility(View.GONE);                      m_btnCreateWF.setVisibility(View.VISIBLE);                      m_gifRadar.setVisibility(View.VISIBLE);                      m_btnCreateWF.setBackgroundResource(R.drawable.x_ap_close);                      m_textVPromptAP.setText( "\n热点名：" + m_wiFiAdmin.getApSSID() +  "\n连接密码：zhf12345" );                  }              }          }      }                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               @Override      protected  void  onDestroy() {          // TODO Auto-generated method stub          super .onDestroy();          WIFIBroadcast.ehList.remove( this );      }                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               @Override      public  void  handleConnectChange() {          Message msg = mHandler.obtainMessage(m_nWTConnectResult);          mHandler.sendMessage(msg);      }      @Override      public  void  scanResultsAvaiable() {          Message msg = mHandler.obtainMessage(m_nWTScanResult);          mHandler.sendMessage(msg);      }      @Override      public  void  wifiStatusNotification() {          m_wiFiAdmin.mWifiManager.getWifiState();  //获取当前wifi状态      } }

 

貌似有点长。。。简单说明一下：

   1.首先，初始化主界面（xml有些复杂，慢慢理一下就好了，不是什么大问题）接下来，处理三个重要的按钮事件：右上角的搜索wifi按钮、中间创建或关闭热点按钮、对话框中确定按钮。处理前两者事件时，需关注当前wifi状态，若为占用，需弹出提醒对话框来根据当前WiFi操作（WFOperateEnum类中定义好了）事件，来创建、关闭、搜索等具体事务。

   2.之所以定义广播接收者，是为了监听当wifi状态发生变化时，能够及时更新界面

 

广播接收者WIFIBroadcast类:

 

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package  com.zhf.wifidemo.broadcast; import  java.util.ArrayList; import  android.content.BroadcastReceiver; import  android.content.Context; import  android.content.Intent; import  android.net.wifi.WifiManager; import  android.util.Log; /**   * 监听wifi热点变化   * @author ZHF   *   */ public  class  WIFIBroadcast  extends  BroadcastReceiver{      public  static  ArrayList<EventHandler> ehList =  new  ArrayList<EventHandler>();                                                                                                                                                                                                                                                                                                                                                        @Override      public  void  onReceive(Context context, Intent intent) {          //搜索到wifi热点结果的广播:  "android.net.wifi.SCAN_RESULTS"          if (intent.getAction().endsWith(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION)) {              Log.i( "WTScanResults---->扫描到了可用网络---->" ,  "android.net.wifi.SCAN_RESULTS" );              //遍历通知各个监听接口              for ( int  i =  0 ; i < ehList.size(); i++) {                  ((EventHandler)ehList.get(i)).scanResultsAvaiable();              }                                                                                                                                                                                                                                                                                                                                                                    //wifi打开或关闭状态变化   "android.net.wifi.WIFI_STATE_CHANGED"          } else  if (intent.getAction().endsWith(WifiManager.WIFI_STATE_CHANGED_ACTION)) {              Log.i( "WTScanResults----->wifi状态变化--->" ,  "android.net.wifi.WIFI_STATE_CHANGED" );              //这里不需要连接一个SSID（wifi名称）              for ( int  j =  0 ; j < ehList.size(); j++) {                  ((EventHandler)ehList.get(j)).wifiStatusNotification();              }                                                                                                                                                                                                                                                                                                                                                                    //连接上一个SSID后发出的广播，(注：与android.net.wifi.WIFI_STATE_CHANGED的区别)          } else  if (intent.getAction().endsWith(WifiManager.NETWORK_STATE_CHANGED_ACTION)) {              Log.i( "WTScanResults----->网络状态变化---->" ,  "android.net.wifi.STATE_CHANGE" );              for ( int  m =  0 ; m < ehList.size(); m++) {                  ((EventHandler)ehList.get(m)).handleConnectChange();              }          }      }      /**       * 事件监听接口       * @author ZHF       *       */      public  static  abstract  interface  EventHandler {          /**处理连接变化事件**/          public  abstract  void  handleConnectChange();          /**扫描结果是有效事件**/          public  abstract  void  scanResultsAvaiable();          /**wifi状态变化事件**/          public  abstract  void  wifiStatusNotification();      }                                                                                                                                                                                                                                                                                                                                                   }

 

说明：监听系统wifi状态变化，内部定义了一个事件处理接口，当wifi状态发生变化时，让其实现类去发送消息更新界面。

 

CreateAPProcess类：

 

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package  com.zhf.wifidemo.ui; import  android.net.wifi.WifiManager; import  android.os.Message; import  com.zhf.wifidemo.wifi.MainActivity; /**   * 创建Wifi热点   * @author ZHF   *   */ public  class  CreateAPProcess  implements  Runnable{                                                                                                                                                                                                     public  MainActivity context;                                                                                                                                                                                                     public  boolean running =  false ;      private  long startTime = 0L;      private  Thread thread =  null ;      public  CreateAPProcess(MainActivity context) {          super ();          this .context = context;      }      @Override      public  void  run() {          while ( true ) {              if (!running)   return ;              //WIFI_STATE_ENABLED 3              //WIFI_AP_STATE_ENABLED  13              if ((context.m_wiFiAdmin.getWifiApState() == WifiManager.WIFI_STATE_ENABLED)                      || (context.m_wiFiAdmin.getWifiApState() ==  13 )                      || (System.currentTimeMillis() -  this .startTime >= 30000L)){                  //wifi可用 或 热点可用                  Message msg = context.mHandler.obtainMessage(context.m_nCreateAPResult);                  context.mHandler.sendMessage(msg);              }              try  {                  Thread.sleep(5L);              }  catch  (Exception e) {                  e.printStackTrace();              }          }                                                                                                                                                                                                         }                                                                                                                                                                                                     public  void  start() {          try  {              thread =  new  Thread( this );              running =  true ;              startTime = System.currentTimeMillis();              thread.start();  //开启线程          }  catch  (Exception e) {              e.printStackTrace();          }      }                                                                                                                                                                                                     public  void  stop() {          try  {              running =  false ;              thread =  null ;              startTime = 0L;          }  catch  (Exception e) {              // TODO: handle exception          }      } }

 

其他类文件具体看源码，当创建一个热点成功后，等待其他客户端搜索

上图：

 

 

WIFIAdapte类：

 

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/**   * 网络列表适配器   * @author ZHF   *   */ public  class  WTAdapter  extends  BaseAdapter {      private  LayoutInflater mInflater;      private  List<ScanResult> mList;   //扫描到的网络结果列表      private  MainActivity mContext;      public  WTAdapter(MainActivity context, List<ScanResult> list) {          // TODO Auto-generated constructor stub          this .mContext = context;          this .mList = list;          this .mInflater = LayoutInflater.from(context);      }      //新加的一个函数，用来更新数据      public  void  setData(List<ScanResult> list) {          this .mList = list;          notifyDataSetChanged();      }                                                                        @Override      public  int  getCount() {          return  mList.size();      }      @Override      public  Object getItem( int  position) {          return  mList.get(position);      }      @Override      public  long  getItemId( int  position) {          return  position;      }      @Override      public  View getView( final  int  position, View convertView, ViewGroup parent) {          //获取点击向的扫描结果          final  ScanResult localScanResult = mList.get(position);          //获取wifi类 //      final WifiAdmin wifiAdmin = WifiAdmin.getInstance(mContext);          final  WifiAdmin wifiAdmin = mContext.m_wiFiAdmin;          final  ViewHolder viewHolder;          if  (convertView ==  null ) {              viewHolder =  new  ViewHolder();              convertView = mInflater.inflate(R.layout.wtitem,  null );              //加载布局模板控件              viewHolder.textVName = ((TextView) convertView.findViewById(R.id.name_text_wtitem));              viewHolder.textConnect = ((TextView) convertView.findViewById(R.id.connect_text_wtitem));              viewHolder.linearLConnectOk = ((LinearLayout) convertView.findViewById(R.id.connect_ok_layout_wtitem));              viewHolder.progressBConnecting = ((ProgressBar) convertView.findViewById(R.id.connecting_progressBar_wtitem));              convertView.setTag(viewHolder);          }  else  {              viewHolder = (ViewHolder) convertView.getTag();          }          //点击连接处理事件          viewHolder.textConnect.setOnClickListener( new  OnClickListener() {              @Override              public  void  onClick(View v) {                  //创建wifi网络                  WifiConfiguration localWifiConfiguration = wifiAdmin.createWifiInfo(localScanResult.SSID, MainActivity.WIFI_AP_PASSWORD,  3 , "wt" );                  //添加到网络                  wifiAdmin.addNetwork(localWifiConfiguration);                  //"点击链接"消失，显示进度条，                  viewHolder.textConnect.setVisibility(View.GONE);                  viewHolder.progressBConnecting.setVisibility(View.VISIBLE);                  viewHolder.linearLConnectOk.setVisibility(View.GONE);                  //点击后3.5s发送消息                  mContext.mHandler.sendEmptyMessageDelayed(mContext.m_nWTConnected, 3500L);              }          });          // 点击断开处理事件          viewHolder.linearLConnectOk.setOnClickListener( new  OnClickListener() {              @Override              public  void  onClick(View v) {                  //断开指定wifi热点                  wifiAdmin.disconnectWifi(wifiAdmin.getWifiInfo().getNetworkId());                  //"断开连接"消失，进度条显示                  viewHolder.textConnect.setVisibility(View.GONE);                  viewHolder.progressBConnecting.setVisibility(View.VISIBLE);                  viewHolder.linearLConnectOk.setVisibility(View.GONE);                  //点击后3.5s发送消息                  mContext.mHandler.sendEmptyMessageDelayed(mContext.m_nWTConnected, 3500L);              }          });          //初始化布局          viewHolder.textConnect.setVisibility(View.GONE);          viewHolder.progressBConnecting.setVisibility(View.GONE);          viewHolder.linearLConnectOk.setVisibility(View.GONE);          viewHolder.textVName.setText(localScanResult.SSID);  //显示热点名称                                                                                // 正连接的wifi信息          WifiInfo localWifiInfo = wifiAdmin.getWifiInfo();          if  (localWifiInfo !=  null ) {              try  { //正在连接                  if  ((localWifiInfo.getSSID() !=  null )&& (localWifiInfo.getSSID().equals(localScanResult.SSID))) {                      viewHolder.linearLConnectOk.setVisibility(View.VISIBLE);                      return  convertView;                  }              }  catch  (NullPointerException e) {                  e.printStackTrace();                  return  convertView;              }              viewHolder.textConnect.setVisibility(View.VISIBLE);          }          return  convertView;      }      public  final  class  ViewHolder {          public  LinearLayout linearLConnectOk;          public  ProgressBar progressBConnecting;          public  TextView textConnect;          public  TextView textVName;      } }

 

   点击连接，实现客户连接，此时他们将处于同一网段内，接下来就可以自己实现传输数据，操控等一系列操作了。 在下一篇中我会继实现一个基于wif热点的多人聊天室，希望能帮助到大家！

 

源码: