网络出现故障之前,任何方式接收广播 [英] Any way to receive a broadcast before the network goes down
问题描述
我已经有几个接收器上运行,其中包括一个重新启动,并进入飞行模式。
不过,我并不总是得到意向及时为我做什么,我需要做的,发送快速消息给外部服务器。
I already have a few receivers running, including one for reboot and entering flight mode. However I'm not always getting the Intent in time for me to do what I need to do, send a quick message to an external server.
即使设置意图过滤优先千不保证我得到传输之前,它是为时已晚,但它确实帮助。
Even setting the intent filter to priority 1000 doesn't guarantee that I get to transmit before it is too late, though it does help.
如前所述,这是不是我没有收到我的节目,我只是让他们来不及了,以后网络已经下降。
As stated, it is not that I do not receive my broadcasts, I just get them too late, after the network is already down.
任何指针,我可能会发现一些提示,这是值得欢迎的,我已经花了几天没有运气淘净。
Any pointers to where I may find some hints to this is most welcome, I've spend the past few days scouring the net with no luck.
编辑:
我是presently使用4个广播监听器之间的分裂以下操作
I'm presently using the following actions split between 4 broadcast listeners
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
<action android:name="android.intent.action.BOOT_COMPLETED" />
<action android:name="android.intent.action.PHONE_STATE" />
<action android:name="android.intent.action.NEW_OUTGOING_CALL" />
<action android:name="android.intent.action.PROVIDER_CHANGED" />
<action android:name="android.intent.action.ACTION_SHUTDOWN" />
<action android:name="android.intent.action.AIRPLANE_MODE" />
编辑2:我意识到,我还没有作出我的意图完全明确。我不是在谈论网络状态本身,而是用户操作进入飞行模式,或关闭设备。
Edit 2: I realized that I hadn't made my intentions entirely clear. I'm not talking about the Network state itself, but user actions to enter flight mode, or turning off the device.
推荐答案
请参阅本code:
IntentFilter monitorInternetConnectivityFilter = new IntentFilter(
ConnectivityManager.CONNECTIVITY_ACTION);
MonitorInternetConnectivity monitorInternetConnectivityReciever;
monitorInternetConnectivityReciever = new MonitorInternetConnectivity();
class MonitorInternetConnectivity extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if (!NetworkHelper.isOnline(context)) {
//Toast.maketext("Network went down");
}
}
}
@Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
unregisterReceiver(monitorInternetConnectivityReciever);
}
@Override
protected void onResume() {
// TODO Auto-generated method stub
super.onPause();
registerReceiver(monitorInternetConnectivityReciever,
monitorInternetConnectivityFilter);
}
//////////////////////
NetworkHelper
////////////////////// NetworkHelper
public static boolean isOnline(Context cxt) {
ConnectivityManager cm = (ConnectivityManager) cxt
.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo netInfo = cm.getActiveNetworkInfo();
if (netInfo != null && netInfo.isConnectedOrConnecting() && canHit()) {
Logger.debug(NetworkHelper.class, "mode is online");
return true;
}
return false;
}
public static boolean canHit() {
try {
URL url = new URL("http://www.google.com/");
HttpURLConnection urlConnection = (HttpURLConnection) url
.openConnection();
urlConnection.setConnectTimeout(3000);
urlConnection.connect();
urlConnection.disconnect();
return true;
} catch (Exception e) {
Logger.error(NetworkHelper.class, e.getMessage());
return false;
}
}
这code,如果它只是之前通知您将通知您,当网络出现故障,不知道它
This code, will notify you when the network is down,not sure if it notifies you just before it
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