Play Console: ClassCastException

[gerhardol]

Play Console crash on a few devices, all Android 10 for releases since 2.1
OnePlus OnePlus6T, Xiaomi MI 9, Samsung Galaxy Tab S5e
Android 9 Huawei HUAWEI Y5 2019

There are RU classes in the stacktracktrace and no info when it occurs, if it is relevant at all.
It could be "@+id/sport_spinner" in start.xml as ClassicSpinner is the class that extends AppCompatSpinner,
but more probably any usage of title_spinner.xml that uses android.widget.Spinner

Some stack overflow discussions indicates that this occurs when ids are duplicated or overlap if a layout has the same name as an id.
sport_spinner and spinner is unique though
The only overlap I saw was "@+id/account_list"

java.lang.ClassCastException:
at androidx.appcompat.widget.AppCompatSpinner.onRestoreInstanceState (AppCompatSpinner.java:617)
at android.view.View.dispatchRestoreInstanceState (View.java:19963)
at android.view.ViewGroup.dispatchThawSelfOnly (ViewGroup.java:3903)
at android.widget.AdapterView.dispatchRestoreInstanceState (AdapterView.java:837)
at android.widget.AbsSpinner.dispatchRestoreInstanceState (AbsSpinner.java:377)
at android.view.ViewGroup.dispatchRestoreInstanceState (ViewGroup.java:3889)
at android.view.ViewGroup.dispatchRestoreInstanceState (ViewGroup.java:3889)
at android.view.ViewGroup.dispatchRestoreInstanceState (ViewGroup.java:3889)
at android.view.ViewGroup.dispatchRestoreInstanceState (ViewGroup.java:3889)
at android.view.ViewGroup.dispatchRestoreInstanceState (ViewGroup.java:3889)
at android.view.ViewGroup.dispatchRestoreInstanceState (ViewGroup.java:3889)
at android.view.ViewGroup.dispatchRestoreInstanceState (ViewGroup.java:3889)
at android.view.ViewGroup.dispatchRestoreInstanceState (ViewGroup.java:3889)
at android.view.ViewGroup.dispatchRestoreInstanceState (ViewGroup.java:3889)
at android.view.ViewGroup.dispatchRestoreInstanceState (ViewGroup.java:3889)
at android.view.ViewGroup.dispatchRestoreInstanceState (ViewGroup.java:3889)
at android.view.ViewGroup.dispatchRestoreInstanceState (ViewGroup.java:3889)
at android.view.ViewGroup.dispatchRestoreInstanceState (ViewGroup.java:3889)
at android.view.ViewGroup.dispatchRestoreInstanceState (ViewGroup.java:3889)
at android.view.ViewGroup.dispatchRestoreInstanceState (ViewGroup.java:3889)
at android.view.ViewGroup.dispatchRestoreInstanceState (ViewGroup.java:3889)
at android.view.View.restoreHierarchyState (View.java:19941)
at com.android.internal.policy.PhoneWindow.restoreHierarchyState (PhoneWindow.java:2187)
at android.app.Activity.onRestoreInstanceState (Activity.java:1563)
at android.app.TabActivity.onRestoreInstanceState (TabActivity.java:67)
at android.app.Activity.performRestoreInstanceState (Activity.java:1518)
at android.app.Instrumentation.callActivityOnRestoreInstanceState (Instrumentation.java:1372)
at android.app.ActivityThread.handleStartActivity (ActivityThread.java:3414)
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$H.handleMessage (ActivityThread.java:2109)
at android.os.Handler.dispatchMessage (Handler.java:107)
at android.os.Looper.loop (Looper.java:214)
at android.app.ActivityThread.main (ActivityThread.java:7682)
at java.lang.reflect.Method.invoke (Method.java)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:516)
at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:950)

[gerhardol]

A few attempts to keep the resource ids and layout names unique was done, not sure if there are few occurrences (not enough data with 4K active installs, one exception make a major difference to the statistics).

#961
https://stackoverflow.com/questions/15298184/unexplainable-classcastexception-in-android-widget-progressbar-onrestoreinstance

#962
https://stackoverflow.com/questions/28961176/java-lang-classcastexception-android-view-abssavedstate1-cannot-be-cast-to-and
#964

Still seem to occur

other hints I found:
https://stackoverflow.com/questions/1714297/android-view-setidint-id-programmatically-how-to-avoid-id-conflicts/15442898#15442898
No candidates that seem to be changable identified yet

https://stackoverflow.com/questions/15298184/unexplainable-classcastexception-in-android-widget-progressbar-onrestoreinstance/15298256
No separate layouts in landscape mode

[gerhardol]

This exception has not occurred since 2.2.3, so last change seem to be sufficient