wakeLock 不等待网络连接

我使用唤醒锁作为警报来定期更新应用程序状态。三星手机上的 WiFi 需要一段时间才能连接。还有 Wifi 上的“保持唤醒”选项does not在三星手机上工作（他们也没有兴趣解决这个问题）。因此，当唤醒锁确实发生时，它应该等待 wifi 连接。我是否需要为 wifi 连接创建一个侦听器才能使其工作，或者应该唤醒锁，有点阻止该 wifi 连接？

mWakeLock = ((PowerManager) getSystemService(POWER_SERVICE)).newWakeLock(
            PowerManager.PARTIAL_WAKE_LOCK, "Taxeeta");
    mWakeLock.acquire();
// do some network activity, in a asynctask
// in the doPost of asyscTask, release lock

编辑 ： 问题是，在AsyncTask中如果网络未连接，或者需要时间才能上网（3g需要一段时间才能上网），Async doInBackground中的webservice调用将会失败。无论如何我都必须释放锁。

SO

我应该放入 wifi/数据连接侦听器吗？或者，还有更好的方法 ？

I have a similar scenario - I am woken up by an alarm, the alarm's BroadcastReceiver launches a WakefulIntentService and the service starts a scan for networks. I use a stupid way of holding on to the lock¹ - I intend to replace this with a latch. I suggest you replace the "AsyncTask" with a WakefulIntentService. Chances are the AsyncTask is not ever fired. In the WakefulIntentService you must acquire and hold on to a wifi lock - I would make this a static field of the YourWakefulIntentService - not entirely clear on this - it's a while back. If this does not work I would use a latch in the YourWakefulIntentService :

// register an alarm
Intent i = new Intent(context, YourReceiver.class);
PendingIntent alarmPendingIntent= PendingIntent.getBroadcast(context, 0, i,
            PendingIntent.FLAG_UPDATE_CURRENT);

public class YourReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        WakefulIntentService.sendWakefulWork(context, YourWIS.class);
    }
}

//pseudocode !
public class YourWIS extends WakefulIntentService { // you must add a cstor !

    @Override
    doWakefulWork() {
      acquireWifiLock();
      enableScanReceiver();
      startScan();
      serviceLatch.wait();
      releaseWifiLock();
    }
}

// in YourScanReceiver
onReceive() {
  if(action.equals(SCAN_RESULTS) {
   // do something that does not take time or start another/the same
   // WakefulIntentService
   serviceLatch.notify();
  }
}

首先尝试 WakefulIntentService（我猜您从警报接收器启动 AsyncTask）。扫描接收器是注册用于接收扫描结果的接收器（请参阅 WifiManager 文档 - 对于睡眠问题，更喜欢接收器而不是侦听器）

_{1 : this is a working class - I just use a second wakeful intent service to keep the wake locks - have still to refactor it to use latches but this approach at least works (I have the second service (the Gatekeeper) wait on a monitor and have the wake lock inside the Gatekeeper. The gatekeeper also holds its CPU lock so all is fine (and ugly)}