[android] 网络断开的监听

[转自]  http://blog.sina.com.cn/s/blog_5d5996d001012o07.html

其实手机在网络方面的的监听也比较重要，有时候我们必须实时监控这个程序的实时网络状态，android在网络断开与连接的时候都会发出广播，我们通过接收系统的广播就可以实现网络的监听，下面是代码---

onCreate的时候实例化

//监听器
   
private NetState receiver=new NetState();
   
private IntentFilter filter=new IntentFilter();

filter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
  this.registerReceiver(receiver,
filter);
  receiver.onReceive(this,
null);

一个广播接收类-

private class NetState extends BroadcastReceiver{

@Override
  public void
onReceive(Context arg0, Intent arg1) {
   ConnectivityManager
manager =
(ConnectivityManager)con.getSystemService(Context.CONNECTIVITY_SERVICE);

NetworkInfo gprs =
manager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
    
NetworkInfo wifi =
manager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
    
if(!gprs.isConnected() && !wifi.isConnected())
    
{

AlertDialog.Builder ab=new
AlertDialog.Builder(con);

//设定标题
      
 ab.setMessage("网络连接断开，请检查网络");
      
 //设定退出按钮
  
     //网络设置按钮

ab.setPositiveButton("确定", new
DialogInterface.OnClickListener() {

@Override

public
void onClick(DialogInterface dialog, int which) {
       //
TODO Auto-generated method stub
       dialog.dismiss();

ShakeActivity.this.finish();

}

}).show();

}

}
  
 }

[android] 网络断开的监听,布布扣,bubuko.com