Service: onTaskRemoved or onDestroy very rarely being called on swiping app off on the recent apps list

Question

Service: onTaskRemoved or onDestroy very rarely being called on swiping app off on the recent apps list

How am I supposed to stop correctly for example video recording in this case? I just get corrupted (not playable) mp4 file

p.s. android:stopWithTask="false" is set of course (and it's default anyway)

@AhmedAbd-Elmeged on my activity `pause` or `stop` service should be still working (I'm not going to kill it at those event) — user924, Aug 30 '17 at 14:51
make this service run in the foreground - check `Service` API on how to do that — pskink, Aug 30 '17 at 14:52
@pskink with foreground service `onTaskRemoved` will be called all the time on swiping app off? — user924, Aug 30 '17 at 14:56
@pskink I know how to do it, I make my service foreground when I start recording video (function of my app)... — user924, Aug 30 '17 at 14:57
@pskink I earlier swiped my app off when service was in foreground mode and also tried just now, methods `onTaskRemoved` or `onDestroy` are still not being called.. — user924, Aug 30 '17 at 14:59
@pskink mb you didn't understand my question, I don't want to keep my service when I swipe my app off, I want to kill it and something before it's killed (stop correctly recording my video) — user924, Aug 30 '17 at 15:00
ok, so OS version are you testing on? on 4.4 `onTaskRemoved` is called with no problem — pskink, Aug 30 '17 at 15:16
I'm afraid it's not possible in principle - https://stackoverflow.com/questions/10387774/detect-when-application-is-closed — algrid, Aug 30 '17 at 20:56
@KevinKrumwiede default is `false` anyway, when I set `true` it never calls at all, with default false `onTaskRemoved` at least being called sometimes — user924, Aug 30 '17 at 21:23
you should set it `true` instead of false to stop the service — Shailendra Madda, Jul 05 '19 at 10:30

Kevin Krumwiede · Answer 1 · 2017-08-31T04:34:40.463

I happen to have written an app specifically for testing this behavior. I'd never tested it on my recently acquired Android 6 device, so I did just now. The main activity starts the service in onCreate and stops it in onBackPressed.

On my LG-K450 (X Power) running 6.0.1, onTaskRemoved is called with 100% reliability.

If the service is running in the background, onTaskRemoved is called, but onDestroy is not, and the process is killed. If onStartCommand returned START_STICKY, the service is restarted almost instantly. (It used to take several seconds.) Otherwise, it's restarted when I relaunch the main activity.

If the service is running in the foreground, onTaskRemoved is still called, but the service is not terminated. This is new. On older versions of Android, foreground services would be killed and restarted.

If you're not seeing calls to onTaskRemoved, my first suspicion would be a device-specific bug. Let me guess... Samsung?

are you sure that you swipe specific app off? not just pressing X button to clear all apps from your recent apps list (with X button `onTaskRemoved` is being called ok for me, but with swipe for specific app isn't) — user924, Aug 30 '17 at 22:42
@user924 `onTaskRemoved` is called in either case -- all apps cleared or only my test app. I noticed something new about foreground services; see my edit. — Kevin Krumwiede, Aug 31 '17 at 04:36

Service: onTaskRemoved or onDestroy very rarely being called on swiping app off on the recent apps list

1 Answers1

Linked