fix: exoplayer usage

[alperozturk96]

Issues

Exception android.app.RemoteServiceException$ForegroundServiceDidNotStartInTimeException:
  at android.app.ActivityThread.generateForegroundServiceDidNotStartInTimeException (ActivityThread.java:2923)
  at android.app.ActivityThread.throwRemoteServiceException (ActivityThread.java:2891)
  at android.app.ActivityThread.-$$Nest$mthrowRemoteServiceException (Unknown Source)
  at android.app.ActivityThread$H.handleMessage (ActivityThread.java:3255)
  at android.os.Handler.dispatchMessage (Handler.java:118)
  at android.os.Looper.loopOnce (Looper.java:237)
  at android.os.Looper.loop (Looper.java:325)
  at android.app.ActivityThread.main (ActivityThread.java:10385)
  at java.lang.reflect.Method.invoke
  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:635)
  at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:961)

Exception java.lang.IllegalStateException:
  at androidx.fragment.app.Fragment.requireContext (Fragment.java:977)
  at com.owncloud.android.ui.preview.PreviewMediaFragment.createExoPlayer (PreviewMediaFragment.kt:265)
  at com.owncloud.android.ui.preview.PreviewMediaFragment.prepareForVideo$lambda$0$0 (PreviewMediaFragment.kt:246)
  at com.owncloud.android.ui.preview.PreviewMediaFragment.$r8$lambda$LAKt5wPiV7OXsof15OnWmBbjqQ8 (Unknown Source)
  at com.owncloud.android.ui.preview.PreviewMediaFragment$$ExternalSyntheticLambda4.run (D8$$SyntheticClass)
  at android.os.Handler.handleCallback (Handler.java:958)
  at android.os.Handler.dispatchMessage (Handler.java:99)
  at android.os.Looper.loopOnce (Looper.java:206)
  at android.os.Looper.loop (Looper.java:295)
  at android.app.ActivityThread.main (ActivityThread.java:8695)
  at java.lang.reflect.Method.invoke
  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:577)
  at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1053)

How to reproduce?

1. Upload two videos and one audio file
2. Download one video file
3. Open three of them back to back

Note

To fix remote service exception notification needed to be added:

This notification will appear if user play audio file. Since via #16525 this enhancement we will have more robust solution and good UI/UX lets keep this to fix crashes for now. @tobiasKaminsky

[alperozturk96]

/backport to stable-3.36

[github-actions]

Codacy

SpotBugs

Category	Base	New
Bad practice	42	42
Correctness	75	75
Dodgy code	253	253
Experimental	1	1
Internationalization	7	7
Malicious code vulnerability	2	2
Multithreaded correctness	34	34
Performance	43	43
Security	18	18
Total	475	475

[github-actions]

blue-Light-Screenshot test failed, but no output was generated. Maybe a preliminary stage failed.

[github-actions]

APK file: https://www.kaminsky.me/nc-dev/android-artifacts/16603.apk



To test this change/fix you can simply download above APK file and install and test it in parallel to your existing Nextcloud app.