java.lang.IllegalStateException since update

[DevEddy]

Version Information

• Visual Studio version (eg. 16.8 or 8.8): 16.9.2
• Xamarin.Android version (eg. 11.1): 11.2.2.1 (dl16-9)
• Using AndroidX or Support Libraries:

<PackageReference Include="Xamarin.AndroidX.Lifecycle.LiveData" Version="2.3.0.1" />
<PackageReference Include="Xamarin.AndroidX.Legacy.Support.V4" Version="1.0.0.7" />
<PackageReference Include="Xamarin.AndroidX.MediaRouter" Version="1.2.2.1" />
<PackageReference Include="Xamarin.AndroidX.AppCompat" Version="1.2.0.7" />
<PackageReference Include="Xamarin.AndroidX.CardView" Version="1.0.0.8" />
<PackageReference Include="Xamarin.AndroidX.Browser" Version="1.3.0.5" />
<PackageReference Include="Xamarin.AndroidX.Legacy.Support.Core.Utils" Version="1.0.0.7" />
<PackageReference Include="Xamarin.AndroidX.AppCompat.Resources" Version="1.1.0.1" />
<PackageReference Include="Xamarin.AndroidX.Palette" Version="1.0.0.7" />

• If Support Libraries, version (eg 28.0.0): -

Describe your Issue:

After a upgrade of Android X packages a lot of users are experiencing this (see stack trace) kind of crash. I can see it via google "Crashes and ANRS".

Upgraded AndroidX packages:
Xamarin.AndroidX.Palette 1.0.0.6 > 1.0.0.7
Xamarin.AndroidX.Lifecycle.LiveData 2.2.0.4 > 2.3.0.1
Xamarin.Google.Android.Material 1.3.0 > 1.3.0.1
Xamarin.AndroidX.Legacy.Support.V4 1.0.0.6 > 1.0.0.7
Xamarin.AndroidX.MediaRouter 1.2.1 > 1.2.2.1

Steps to Reproduce (with link to sample solution if possible):

I could not reproduce it on the emulator, I am not sure. Seems to happen sporadically on startup of the app.

Edit: It seems it happens only when the app was killed by android before and the user tries to start the app:

app.kill("excessive cpu " + cputimeUsed + " during " + uptimeSince + " dur=" + checkDur + " limit=" + cpuLimit, true);
Source: https://android.googlesource.com/platform/frameworks/base/+/97995da6e1d40a053402cc120944e3738a18d1a0/services/core/java/com/android/server/am/ActivityManagerService.java#24367

Include any relevant Exception Stack traces, build logs, adb logs:

java.lang.IllegalStateException: 
  at androidx.fragment.app.Fragment$4.onFindViewById (Fragment.java:2888)
  at androidx.fragment.app.FragmentStateManager.createView (FragmentStateManager.java:501)
  at androidx.fragment.app.FragmentStateManager.moveToExpectedState (FragmentStateManager.java:282)
  at androidx.fragment.app.FragmentStore.moveToExpectedState (FragmentStore.java:112)
  at androidx.fragment.app.FragmentManager.moveToState (FragmentManager.java:1636)
  at androidx.fragment.app.FragmentManager.dispatchStateChange (FragmentManager.java:3112)
  at androidx.fragment.app.FragmentManager.dispatchActivityCreated (FragmentManager.java:3056)
  at androidx.fragment.app.Fragment.performActivityCreated (Fragment.java:2989)
  at androidx.fragment.app.FragmentStateManager.activityCreated (FragmentStateManager.java:577)
  at androidx.fragment.app.FragmentStateManager.moveToExpectedState (FragmentStateManager.java:285)
  at androidx.fragment.app.FragmentStore.moveToExpectedState (FragmentStore.java:112)
  at androidx.fragment.app.FragmentManager.moveToState (FragmentManager.java:1636)
  at androidx.fragment.app.FragmentManager.dispatchStateChange (FragmentManager.java:3112)
  at androidx.fragment.app.FragmentManager.dispatchActivityCreated (FragmentManager.java:3056)
  at androidx.fragment.app.FragmentController.dispatchActivityCreated (FragmentController.java:251)
  at androidx.fragment.app.FragmentActivity.onStart (FragmentActivity.java:473)
  at androidx.appcompat.app.AppCompatActivity.onStart (AppCompatActivity.java:210)
  at crc643f46942d9dd1fff9.FormsAppCompatActivity.n_onStart (Native Method)
  at crc643f46942d9dd1fff9.FormsAppCompatActivity.onStart (FormsAppCompatActivity.java:128)
  at android.app.Instrumentation.callActivityOnStart (Instrumentation.java:1433)
  at android.app.Activity.performStart (Activity.java:7986)
  at android.app.ActivityThread.handleStartActivity (ActivityThread.java:3677)
  at android.app.servertransaction.TransactionExecutor.performLifecycleSequence (TransactionExecutor.java:221)
  at android.app.servertransaction.TransactionExecutor.cycleToPath (TransactionExecutor.java:201)
  at android.app.servertransaction.TransactionExecutor.executeLifecycleState (TransactionExecutor.java:173)
  at android.app.servertransaction.TransactionExecutor.execute (TransactionExecutor.java:97)
  at android.app.ActivityThread$H.handleMessage (ActivityThread.java:2267)
  at android.os.Handler.dispatchMessage (Handler.java:107)
  at android.os.Looper.loop (Looper.java:237)
  at android.app.ActivityThread.main (ActivityThread.java:8167)
  at java.lang.reflect.Method.invoke (Native Method)
  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:496)
  at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1100)

ADB Bug Report: bugreport-sdk_gphone_x86-RSR1.201013.001-2021-03-22-14-50-25.zip

[Swodah]

I also get a lot of illegalstate exceptions, I was able to reproduce it as simply as putting the app to the background and changing the phone to darkmode then going back into the app. I surmised it had something to do with the app rebuilding a view, though I haven't tested it with other methods(such as rotating the view or otherwise forcing it the rebuild the view)

[Savage1024]

I think this is the same bug
xamarin/Xamarin.Forms#13895

[nathankim0]

xamarin/Xamarin.Forms#14193

[jpobst]

There isn't really any added logic in the AndroidX binding. It is simply a generated wrapper around Google's androidx.fragment library. Likely, Google changed something about how this package works and Xamarin Forms needs to be updated to accommodate this change.

As there are multiple XF bugs linked already, closing this issue in favor of those bugs.