[Android] 监听系统网络连接打开可能关闭的消息

很简单，所以直接看代码。

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

public class NetstateReceiver extends BroadcastReceiver {	@Override	public void onReceive(Context context, Intent intent) {		ConnectivityManager manager = (ConnectivityManager) context				.getSystemService(Context.CONNECTIVITY_SERVICE);		NetworkInfo gprs = manager				.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);		NetworkInfo wifi = manager				.getNetworkInfo(ConnectivityManager.TYPE_WIFI);		if (!gprs.isConnected() && !wifi.isConnected()) {			// network closed		} else {			// network opend

		}	}}

代码自定义了一个BroadcastReceiver，是想监听网络设置变化的事件。

Manifest文件里注册监听。

        <receiver android:name="xxx.NetstateReceiver">            <intent-filter>                <action android:name="android.net.conn.CONNECTIVITY_CHANGE" />            </intent-filter>        </receiver>

还需要加入权限信息。

    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />