wakelock

I have question about wakelock. In cases shown below, does android OS release wakelock ( PARTIAL_WAKE_LOCK if you need to specify) to prevent wakelock was left acquired and wasting battery until turning power off (not sleep). Case 1-a: App has acquired wakelock (w/o timeout option) in one of its threads (please think it is reasonable in this case) and it was designed to release wakelock when critical task was finished. App can be killed by taskmanager or notorious taskkiller, and app has no chance to let its thread release wakelock. What happens to that wakelock? Case 1-b: (If answer to case 1

I am developing an app that needs to use both wifiLock and wakeLock so the audio streaming when the screen is off does not get disturbed. I have tried my app on Android 2.3 and wakeLock and looks like wifiLock work as expected so there is no difference between when the screen is on or off, but the same app on Android 4.2 (Jelly-bean) when the screen goes off is not working as well and the audio gets choppy which shows either wakeLock or wifiLock are not working correctly. Is there any reason for this? Here is how I acquire and release the locks, in my main activity I have: @Override public

I'm using handler to repeatedly prompt user for an input every e.g. 5 minutes. When the device goes into sleeping mode and screen is locked, how can I wake the device up when my app prompts user for input? I've tried this but it doesn't seem to work. I've added WAKE_LOCK permission in the manifest. class BtHandler extends Handler { private PowerManager pm; private WakeLock wl; @Override public void handleMessage(Message msg) { pm = (PowerManager)FixedNode.this.getSystemService(Context.POWER_SERVICE); if (!pm.isScreenOn()) { wl = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK, "TAG"); wl.acquire();

I've got a push notification-app, is there any way to wake up the screen (just make it light up) whenever I receive a push notification? if you want some code just let me know! and Thank you for your answers! You can do it using a WakeLock this way: When you set your notification: WakeLock screenOn = ((PowerManager)getSystemService(POWER_SERVICE)).newWakeLock(PowerManager.SCREEN_BRIGHT_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP, "example"); screenOn.acquire(); And, IMPORTANT , release the wakelock when you don't need it anymore: screenOn.release(); 来源： https://stackoverflow.com/questions

I have a MediaPlayer running in a Service that's playing audio from a URL (streaming). As of now it appears to work well, and even continues playing when I put the phone in standby. I currently do not acquire a wakelock. My question is: Is it actually necessary to acquire a wakelock in my situation? If it is necessary, what type of wakelock should I acquire? And yes, this is a legitimate use-case for wakelock, because my users explicitly want the audio to continue playing. MediaPlayer does not do this for you automatically by default. However, instead of you having to acquire a wake lock, it

I want to turn on the display, unlock the phone and bring my app to the front, when the alarm I've set activates. public class CountDownAlarm extends BroadcastReceiver { public CountDownAlarm(){ } public CountDownAlarm(Context context, int timeoutInSeconds){ AlarmManager alarmMgr = (AlarmManager)context.getSystemService(Context.ALARM_SERVICE); Intent intent = new Intent(context, CountDownAlarm.class); PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT); Calendar time = Calendar.getInstance(); time.setTimeInMillis(System