🐞Workmanager().registerOneOffTask no more runs the task immediately and now cancelling tasks as failed after 30 seconds

[absar]

Hi @ened retested using v0.10.10, issue reported in #738 and #732 is still not fixed:
Before closing the issue could we please run the example app to check whether the fix is working preferably on an Android 16+ devices or emulator, since just the unit tests might not be enough for real device/emulator issues.

W/JobInfo ( 7318): Requested important-while-foreground flag for job1 is ignored and takes no effect
D/WM-SystemJobScheduler( 7318): Scheduling work ID 53748bde-74ff-49b2-8632-2616eba8a592Job ID 1
D/WM-GreedyScheduler( 7318): Starting work for 53748bde-74ff-49b2-8632-2616eba8a592
D/WM-Processor( 7318): Processor: processing WorkGenerationalId(workSpecId=53748bde-74ff-49b2-8632-2616eba8a592, generation=0)
D/WM-WorkerWrapper( 7318): Starting work for dev.fluttercommunity.workmanager.BackgroundWorker
D/WM-SystemJobService( 7318): onStartJob for WorkGenerationalId(workSpecId=53748bde-74ff-49b2-8632-2616eba8a592, generation=0)
D/WM-Processor( 7318): Work WorkGenerationalId(workSpecId=53748bde-74ff-49b2-8632-2616eba8a592, generation=0) is already enqueued for processing

After a few seconds the task gets cancelled without even running the callback:
I/WM-WorkerWrapper( 7318): Worker result FAILURE for Work [ id=53748bde-74ff-49b2-8632-2616eba8a592, tags={ dev.fluttercommunity.workmanager.BackgroundWorker } ]
D/WM-Processor( 7318): Processor 53748bde-74ff-49b2-8632-2616eba8a592 executed; reschedule = false
D/WM-SystemJobService( 7318): 53748bde-74ff-49b2-8632-2616eba8a592 executed on JobScheduler
D/WM-GreedyScheduler( 7318): Cancelling work ID 53748bde-74ff-49b2-8632-2616eba8a592
D/WM-SystemJobService( 7318): onStopJob for WorkGenerationalId(workSpecId=53748bde-74ff-49b2-8632-2616eba8a592, generation=0)
D/WindowOnBackDispatcher( 7318): setTopOnBackInvokedCallback (unwrapped): android.app.Activity$$ExternalSyntheticLambda0@5628e2

[ened]

Hi @absar & let's work through it. I do not have an Android 16 phone at hand, so currently rely on emulator & tests. Could I trouble you to enable the debug features & get more logs out? Also share sample project ideally.

[absar]

Hi @ened we don't need a physical device, you can test on Android 16 emulator (and iOS simulator but do that after testing Android). You can use the example app from workmanager to test.

Steps to reproduce:

• Run the example app and press Start the Flutter background service
• Press Register OneOff Task
• Expected behavior: the job should run and callback output should be seen in the terminal, but it does not run and just show D/WM-WorkerWrapper( 7318): Starting work for dev.fluttercommunity.workmanager.BackgroundWorker
• After a few seconds the task gets cancelled without even running the callback and output shows I/WM-WorkerWrapper( 7318): Worker result FAILURE for Work
• If the issue is not reproduced press the Register OneOff Task button again
• It feels like it's behaving like registerPeriodicTask not a one time near realtime task

[oppware]

I have a similar issue with version 0.7.0, which worked flawless until I upgraded to AGP 9.0.1.
Everything works fine in debug but not release, which got me thinking about the new Android optimizations.
After the upgrade the registerOneOffTask() was still called but the task never ran. Not with app still open, nor with app closed.
I tried a lot of things and after half a day of testing and plugging around, it turned out R8 is the problem.
When I turn R8 off by changing the settings in app/build.gradle.kts
isMinifyEnabled = false
isShrinkResources = false
it works again like it used to! Now it makes sense why it always worked for me in debug, because R8 is deactivated in debug.
I have added some keep rules but no luck.
For some reason either the entry point got removed (yes I have @pragma('vm:entry-point')) or some workmanager or some androidx.work or room gets removed or obfuscated perhaps!?!

Or is wormanager 0.7.0 not compatible with AGP 9.0.1?