使用BroadcastReceiver监听网络状态

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.util.Log;


public class ConnectionChangeReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        ConnectivityManager connectivityManager=(ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo  mobNetInfo=connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
        NetworkInfo  wifiNetInfo=connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
        
        if (!mobNetInfo.isConnected() && !wifiNetInfo.isConnected()) {
        	
        	Log.i("------ConnectionChangeReceiver--------", "网络正常");
        	
        }else {
        	
        	Log.i("------ConnectionChangeReceiver--------", "没有网络");
        }
    }
}
           

上面就是核心代码块

private ConnectionChangeReceiver myReceiver;
	private  void registerReceiver(){
        IntentFilter filter=new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION);
        myReceiver=new ConnectionChangeReceiver();
        this.registerReceiver(myReceiver, filter);
    }
	
	private  void unregisterReceiver(){
        this.unregisterReceiver(myReceiver);
    }
           

上面的广播注册及销毁可以在baseactivity中使用。也可以单独在每个activity中使用。这个相信大家都会就不多说了。