Background executionmay become unreliable if SD Maid was triggered while being backed up by "Auto Backup"

[d4rken]

If SD Maid is launched while being backed up through Android's automatic backup tooling, then SD Maid may crash because when being launched while being backed up, the provided context is not our own app context, i.e. subclassed Application class, but a RestrictedContext provided by the system.

There are two issues due to this:

SD Maid will crash, because we are trying to do dependency injection and getting:

Exception java.lang.RuntimeException:
  at android.app.ActivityThread.handleReceiver (ActivityThread.java:4780)
  at android.app.ActivityThread.-$$Nest$mhandleReceiver
  at android.app.ActivityThread$H.handleMessage (ActivityThread.java:2435)
  at android.os.Handler.dispatchMessage (Handler.java:107)
  at android.os.Looper.loopOnce (Looper.java:232)
  at android.os.Looper.loop (Looper.java:317)
  at android.app.ActivityThread.main (ActivityThread.java:8699)
  at java.lang.reflect.Method.invoke
  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:580)
  at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:886)
Caused by java.lang.IllegalArgumentException: Hilt BroadcastReceiver must be attached to an @AndroidEntryPoint Application. Found: class android.app.Application
  at dagger.hilt.android.internal.managers.BroadcastReceiverComponentManager.generatedComponent (BroadcastReceiverComponentManager.java)
  at eu.darken.sdmse.scheduler.core.SchedulerRestoreReceiver.onReceive (SchedulerRestoreReceiver.java)
  at android.app.ActivityThread.handleReceiver (ActivityThread.java:4771)

and up to Android 13 there was/is a bug that if we crash while being backed up, subsequent app launches still get the restricted context.

Potential solution would be to disable the auto backup and code a custom backup provider, but this is a lot of extra work. According to Google Play this is currently still a quite rare crash so we could also just ignore it 🤔

Also see

• https://stackoverflow.com/a/72346694/1251958
• Provide warning about using "allowBackup" with Hilt google/dagger#2798
• https://issuetracker.google.com/issues/160946170