检测 3G 或 Wifi 网络恢复 [英] Detect 3G or Wifi Network restoration
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问题描述
是否可以实现 PhoneStateListener(或任何其他机制)来检测 3G 或 Wifi 网络连接何时恢复?
Is it possible to implement a PhoneStateListener(or any other mechanism) to detect when either the 3G or Wifi network connection is restored ?
我在 API 的摘要中看到 LISTEN_DATA_CONNECTION_STATE 和 LISTEN_DATA_ACTIVITY 都说(蜂窝).是不是只有3G?
I see both LISTEN_DATA_CONNECTION_STATE and LISTEN_DATA_ACTIVITY say (cellular) in the API's summary. Does it mean 3G only ?
谢谢
推荐答案
更好的方法是使用 android.net.ConnectivityManager 类.注册接收器并监控广播.
Better approach would be to use android.net.ConnectivityManager class. Register the receiver and monitor broadcasts.
private class ConnectionMonitor extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (!action.equals(ConnectivityManager.CONNECTIVITY_ACTION)) {
return;
}
boolean noConnectivity = intent.getBooleanExtra(
ConnectivityManager.EXTRA_NO_CONNECTIVITY, false);
NetworkInfo aNetworkInfo = (NetworkInfo) intent
.getParcelableExtra(ConnectivityManager.EXTRA_NETWORK_INFO);
if (!noConnectivity) {
if ((aNetworkInfo.getType() == ConnectivityManager.TYPE_MOBILE)
|| (aNetworkInfo.getType() == ConnectivityManager.TYPE_WIFI)) {
// Handle connected case
}
} else {
if ((aNetworkInfo.getType() == ConnectivityManager.TYPE_MOBILE)
|| (aNetworkInfo.getType() == ConnectivityManager.TYPE_WIFI)) {
// Handle disconnected case
}
}
}
}
private synchronized void startMonitoringConnection() {
IntentFilter aFilter = new IntentFilter(
ConnectivityManager.CONNECTIVITY_ACTION);
registerReceiver(mConnectionReceiver, aFilter);
}
private synchronized void stopMonitoringConnection() {
unregisterReceiver(mConnectionReceiver);
}
哪里
mConnectionReceiver = new ConnectionMonitor();
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