Android中監聽系統網路連接開啟或者關閉的實現代碼

很簡單，所以直接看代碼

複製代碼 代碼如下:package xxx;

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

複製代碼 代碼如下: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

}
}

}

代碼自訂了一個BroadcastReceiver，是想監聽網路設定變化的事件。

Manifest檔案裡註冊監聽。

複製代碼 代碼如下:<receiver android:name="xxx.NetstateReceiver">
<intent-filter>
<action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
</intent-filter>
</receiver>

還需要加入許可權資訊。複製代碼 代碼如下:<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />