首先添加以下权限
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
new一个广播NetStateChangeBroadcast
package aviationboss.broadcast;import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.net.ConnectivityManager;
import android.net.NetworkInfo.State;
import android.util.Log;
import android.widget.Toast;
import aviationboss.data.SystemData;public class NetStateChangeBroadcast extends BroadcastReceiver {
private ConnectivityManager connectivity;
private boolean isConnect = false;@Override
public void onReceive(Context arg0, Intent arg1) {
// TODO Auto-generated method stub
connectivity = (ConnectivityManager) arg0
.getSystemService(arg0.CONNECTIVITY_SERVICE);
State wifiState = connectivity.getNetworkInfo(
ConnectivityManager.TYPE_WIFI).getState();
if (State.CONNECTED == wifiState) {
isConnect = true;
}if(connectivity.getNetworkInfo(ConnectivityManager.TYPE_MOBILE)!=null){
State mobileState = connectivity.getNetworkInfo(
ConnectivityManager.TYPE_MOBILE).getState();
if (State.CONNECTED == mobileState) {
isConnect = true;
}
}Intent intent = new Intent();
intent.setAction("netConnect");if (isConnect) {
if (!SystemData.NetState) {
Toast.makeText(arg0, "网络已连接", Toast.LENGTH_SHORT).show();
SystemData.NetState = true;
intent.putExtra("netActions", "网络已连接");
arg0.sendBroadcast(intent);
}
} else {
if (SystemData.NetState) {
Toast.makeText(arg0, "网络已断开", Toast.LENGTH_SHORT).show();
SystemData.NetState = false;
intent.putExtra("netActions", "网络已断开");
arg0.sendBroadcast(intent);
}
}
}
}
判断wifi的连接状态
connectivity.getNetworkInfo(ConnectivityManager.TYPE_WIFI).getState()
判断移动网的连接状态
connectivity.getNetworkInfo(ConnectivityManager.TYPE_MOBILE).getState()
在配置文件中添加该广播,并设置监听的动作
<receiver android:name="aviationboss.broadcast.NetStateChangeBroadcast" >
<intent-filter>
<action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
</intent-filter>
</receiver>