NullPointerException on FragmentHostCallback.getContext()

Question

I'm facing this random crash while navigating to a Fragment via deep-link which is declared in the navigation graph file. I'm using navigation component library in my project.

Stacktrace:

Fatal Exception: java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.Context androidx.fragment.app.FragmentHostCallback.getContext()' on a null object reference
   at androidx.fragment.app.FragmentLifecycleCallbacksDispatcher.dispatchOnFragmentPreAttached(FragmentLifecycleCallbacksDispatcher.java:91)
   at androidx.fragment.app.FragmentLifecycleCallbacksDispatcher.dispatchOnFragmentPreAttached(FragmentLifecycleCallbacksDispatcher.java:96)
   at androidx.fragment.app.FragmentStateManager.attach(FragmentStateManager.java:463)
   at androidx.fragment.app.FragmentStateManager.moveToExpectedState(FragmentStateManager.java:275)
   at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:2189)
   at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:2106)
   at androidx.fragment.app.FragmentManager.execPendingActions(FragmentManager.java:2002)
   at androidx.fragment.app.FragmentManager$5.run(FragmentManager.java:524)
   at android.os.Handler.handleCallback(Handler.java:938)
   at android.os.Handler.dispatchMessage(Handler.java:99)
   at android.os.Looper.loop(Looper.java:223)
   at android.app.ActivityThread.main(ActivityThread.java:7698)
   at java.lang.reflect.Method.invoke(Method.java)
   at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:952)

Answer 1

I was missing super.onCreate(savedInstanceState) in my Activity's onCreate. Super annoying that the error description is not more specific.