So in last couple versions of my application Firebase Crashlytics is reporting crashes in ViewModelStore class from androidX lifecycle library. The version of lifecycle library that I use is 2.0.0. I couldn't find any reported issues on Google issue tracker related for this one. Here is the log:
Fatal Exception: java.lang.NullPointerException: Attempt to invoke virtual method 'void androidx.lifecycle.ViewModel.clear()' on a null object reference
at androidx.lifecycle.ViewModelStore.clear(ViewModelStore.java:62)
at androidx.fragment.app.FragmentManagerViewModel.clearNonConfigState(FragmentManagerViewModel.java:169)
at androidx.fragment.app.FragmentStateManager.destroy(FragmentStateManager.java:480)
at androidx.fragment.app.FragmentManager.moveToState(FragmentManager.java:1294)
at androidx.fragment.app.FragmentManager.moveToState(FragmentManager.java:1354)
at androidx.fragment.app.FragmentManager.moveFragmentToExpectedState(FragmentManager.java:1432)
at androidx.fragment.app.BackStackRecord.executeOps(BackStackRecord.java:442)
at androidx.fragment.app.FragmentManager.executeOps(FragmentManager.java:2167)
at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:1990)
at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:1945)
at androidx.fragment.app.FragmentManager.execPendingActions(FragmentManager.java:1847)
at androidx.fragment.app.FragmentManager$4.run(FragmentManager.java:413)
at android.os.Handler.handleCallback(Handler.java:789)
at android.os.Handler.dispatchMessage(Handler.java:98)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6938)
at java.lang.reflect.Method.invoke(Method.java)
at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:327)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1374)
Does someone has a clue what could be an issue?
It seems this issue is fixed with the latest updates in the Fragment
, Lifecycle
, and ViewModel
AndroidX libraries.
It was verified with androidx.lifecycle:lifecycle-viewmodel-ktx:2.7.0