Android 判断网络是GPRS还是WIFI

package com.cwq.receiver;

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

public class ConnectionChangeReceiver extends BroadcastReceiver{

@Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
//取得服务
ConnectivityManager connectivityManager=(ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
//Gprs数据
NetworkInfo mobNetInfo=connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
//WiFi数据
NetworkInfo wifiNetInfo=connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
if(wifiNetInfo.isConnected()){
//Toast.makeText(context, "打开WiFi", Toast.LENGTH_SHORT).show();
}
else if(mobNetInfo.isConnected()&&!wifiNetInfo.isConnected()){
//Toast.makeText(context, "打开GPRS且关闭了WiFi", Toast.LENGTH_SHORT).show();
}
}

}