pcwiki的部落格

1. public class ConnectionChangeReceiver extends BroadcastReceiver 
2. { 
3.   public void onReceive( Context context, Intent intent ) 
4.   { 
5.     ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService( Context.CONNECTIVITY_SERVICE ); 
6.     NetworkInfo activeNetInfo = connectivityManager.getActiveNetworkInfo(); //WIFI
7.     NetworkInfo mobNetInfo = connectivityManager.getNetworkInfo(     ConnectivityManager.TYPE_MOBILE ); //3G
8.     if ( activeNetInfo != null ) 
9.     { 
10.       Toast.makeText( context, "Active Network Type : " + activeNetInfo.getTypeName(), Toast.LENGTH_SHORT ).show(); 
11.     } 
12.     if( mobNetInfo != null ) 
13.     { 
14.       Toast.makeText( context, "Mobile Network Type : " + mobNetInfo.getTypeName(), Toast.LENGTH_SHORT ).show(); 
15.     } 
16.   } 
17. } 

http://www.eoeandroid.com/thread-43804-1-1.html