ScreenContainer throws IllegalStateException

[jaspermeijaard]

Hey guys 👋

We have a project running with [email protected], [email protected] and [email protected]. In our error monitoring we see quite some fatal errors being thrown in ScreenContainer.detachScreen() when ScreenContainer.performUpdate() tries to remove fragments that are no longer active (this line). We do see this error on all Android versions (11, 10, 9, 8 and even below)

Unfortunately I'm not able to reproduce this error and I don't understand why Android is throwing this error. I'm very sure we are managing the fragments from the same Activity. How is it possible that the FragmentManager is returning Fragments that are not associated with - the same - FragmentManager, and therefore can not be removed?

Any ideas how to tackle this issue?

Fatal Exception: java.lang.IllegalStateException: Cannot remove Fragment attached to a different FragmentManager. Fragment ScreenFragment{...} is already attached to a FragmentManager.

Stacktrace

Fatal Exception: java.lang.IllegalStateException: Cannot remove Fragment attached to a different FragmentManager. Fragment ScreenFragment{2ac18ea} (f19cecea-6bd3-466c-a006-e245f04ce899) id=0x553} is already attached to a FragmentManager.
       at androidx.fragment.app.BackStackRecord.remove(BackStackRecord.java:189)
       at com.swmansion.rnscreens.ScreenContainer.detachScreen(ScreenContainer.java:244)
       at com.swmansion.rnscreens.ScreenContainer.performUpdate(ScreenContainer.java:348)
       at com.swmansion.rnscreens.ScreenContainer.onUpdate(ScreenContainer.java:339)
       at com.swmansion.rnscreens.ScreenContainer.updateIfNeeded(ScreenContainer.java:325)
       at com.swmansion.rnscreens.ScreenContainer.access$000(ScreenContainer.java:24)
       at com.swmansion.rnscreens.ScreenContainer$1.doFrame(ScreenContainer.java:40)
       at com.facebook.react.modules.core.ReactChoreographer$ReactChoreographerDispatcher.doFrame(ReactChoreographer.java:175)
       at com.facebook.react.modules.core.ChoreographerCompat$FrameCallback$1.doFrame(ChoreographerCompat.java:85)
       at android.view.Choreographer$CallbackRecord.run(Choreographer.java:1055)
       at android.view.Choreographer.doCallbacks(Choreographer.java:881)
       at android.view.Choreographer.doFrame(Choreographer.java:804)
       at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:1042)
       at android.os.Handler.handleCallback(Handler.java:883)
       at android.os.Handler.dispatchMessage(Handler.java:100)
       at android.os.Looper.loop(Looper.java:237)
       at android.app.ActivityThread.main(ActivityThread.java:7817)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1027)

[WoLewicki]

I am afraid I cannot help you much with this issue without some basic reproduction of it. We are only detaching screens which are added to mScreenFragments and all of them should be added to the same FragmentManager. Do you have any other code that uses fragments?