I have a Timer in my app widget. This timer will be updating the Widget UI every second. All the process works perfectly. But, when user removes my app from recently apps task list, timer stops immediately.
Anybody knows how to fix this problem?
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Are you using a Service to run the Timer? – Ashkan Sarlak Sep 07 '15 at 05:48
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No, I'm not use service, i will be start timer in the method "onUpdate". Timer is a static field. – SBotirov Sep 07 '15 at 05:49
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As I have done a similar project in past, that way it would not work. I had tried your solution and the timer was stopping after some time, no matter what. I'll put some suggestions in an answer. – Ashkan Sarlak Sep 07 '15 at 05:55
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I have a list Timer tasks and when first task ended and second timer task will be run if stack list not empty – SBotirov Sep 07 '15 at 05:57
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I don't understand why timer stopped – SBotirov Sep 07 '15 at 05:58
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1when user removes my app from recently apps task list, its process is killed. thats why the Timer stops – Emil Sep 07 '15 at 06:04
1 Answers
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Put your logic for controlling the Widget in a Service. in onStartCommand() method, start a time scheduler thing, or register for ACTION_TIME_TICK which will send an event, every minute.
Also remember to return START_STICKY from your Service so that the OS can restart the service in cases where your process gets closed by the OS itself or by swiping away from recent task list.
One caveat is that restarting the service after swiping from recents would not happen in KitKat Android duo to a bug. Though there's a dirty workaround for it.
Ashkan Sarlak
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I don't think it's a bug. See the answer here: http://stackoverflow.com/a/6299862/2511775 The `BroadcastReceiver` object gets cleaned up pretty quickly. And `AppWidgetProvider` is a child of `BroadcastReceiver`. – Ashkan Sarlak Sep 07 '15 at 06:28
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@Sarlak I tired your idea but not working, I return START_STICKY but OS not restarted Service – SBotirov Sep 07 '15 at 11:45