Android之广播监控wifi连接状态

  

   

    

     

    
    

     

      package com.example.floatdialogtest;  
     
    
   

    

     

    
    

     
  
     
    
   

    

     

    
    

     

      import android.content.BroadcastReceiver;  
     
    
   

    

     

    
    

     

      import android.content.Context;  
     
    
   

    

     

    
    

     

      import android.content.Intent;  
     
    
   

    

     

    
    

     

      import android.net.NetworkInfo;  
     
    
   

    

     

    
    

     

      import android.net.wifi.WifiInfo;  
     
    
   

    

     

    
    

     

      import android.net.wifi.WifiManager;  
     
    
   

    

     

    
    

     
  
     
    
   

    

     

    
    

     

      public class WifiReceiver extends BroadcastReceiver{  
     
    
   

    

     

    
    

     

       @Override  
     
    
   

    

     

    
    

     

       public void onReceive(Context context, Intent intent) {  
     
    
   

    

     

    
    

     

       // TODO Auto-generated method stub  
     
    
   

    

     

    
    

     

       if(intent.getAction().equals(WifiManager.RSSI_CHANGED_ACTION)){  
     
    
   

    

     

    
    

     

       //signal strength changed  
     
    
   

    

     

    
    

     

       }  
     
    
   

    

     

    
    

     

       else if(intent.getAction().equals(WifiManager.NETWORK_STATE_CHANGED_ACTION)){//wifi连接上与否  
     
    
   

    

     

    
    

     

       System.out.println("网络状态改变");  
     
    
   

    

     

    
    

     

       NetworkInfo info = intent.getParcelableExtra(WifiManager.EXTRA_NETWORK_INFO);  
     
    
   

    

     

    
    

     

       if(info.getState().equals(NetworkInfo.State.DISCONNECTED)){  
     
    
   

    

     

    
    

     

       System.out.println("wifi网络连接断开");  
     
    
   

    

     

    
    

     

       }  
     
    
   

    

     

    
    

     

       else if(info.getState().equals(NetworkInfo.State.CONNECTED)){  
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

       WifiManager wifiManager = (WifiManager)context.getSystemService(Context.WIFI_SERVICE);  
     
    
   

    

     

    
    

     

       WifiInfo wifiInfo = wifiManager.getConnectionInfo(); 
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

       //获取当前wifi名称  
     
    
   

    

     

    
    

     

       System.out.println("连接到网络 " + wifiInfo.getSSID());  
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

       }  
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

       }  
     
    
   

    

     

    
    

     

       else if(intent.getAction().equals(WifiManager.WIFI_STATE_CHANGED_ACTION)){//wifi打开与否  
     
    
   

    

     

    
    

     

       int wifistate = intent.getIntExtra(WifiManager.EXTRA_WIFI_STATE, WifiManager.WIFI_STATE_DISABLED);  
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

       if(wifistate == WifiManager.WIFI_STATE_DISABLED){  
     
    
   

    

     

    
    

     

       System.out.println("系统关闭wifi");  
     
    
   

    

     

    
    

     

       }  
     
    
   

    

     

    
    

     

       else if(wifistate == WifiManager.WIFI_STATE_ENABLED){  
     
    
   

    

     

    
    

     

       System.out.println("系统开启wifi");  
     
    
   

    

     

    
    

     

       }  
     
    
   

    

     

    
    

     

       }  
     
    
   

    

     

    
    

     

       }  
     
    
   

    

     

    
    

     

      } 
     
    
  
 

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

receiver intetfilter

<intent-filter >
                <action android:name="android.net.wifi.RSSI_CHANGED"/>
                <action android:name="android.net.wifi.STATE_CHANGE"/>
                <action android:name="android.net.wifi.WIFI_STATE_CHANGED"/>
</intent-filter>

文章来源: chenyu.blog.csdn.net，作者：chen.yu，版权归原作者所有，如需转载，请联系作者。

原文链接：chenyu.blog.csdn.net/article/details/52443588