java.lang.NullPointerException: Attempt to invoke virtual method 'void com.bluelinelabs.conductor.internal.LifecycleHandler.unregisterForActivityResults(java.lang.String)' on a null object reference

GitHub | gabrielittner | 6 months ago
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    NPE when Conductor tries to unregister from Activity results

    GitHub | 6 months ago | gabrielittner
    java.lang.NullPointerException: Attempt to invoke virtual method 'void com.bluelinelabs.conductor.internal.LifecycleHandler.unregisterForActivityResults(java.lang.String)' on a null object reference

    Root Cause Analysis

    1. java.lang.NullPointerException

      Attempt to invoke virtual method 'void com.bluelinelabs.conductor.internal.LifecycleHandler.unregisterForActivityResults(java.lang.String)' on a null object reference

      at com.bluelinelabs.conductor.ActivityHostedRouter.unregisterForActivityResults()
    2. com.bluelinelabs.conductor
      Controller$7.onViewDetachedFromWindow
      1. com.bluelinelabs.conductor.ActivityHostedRouter.unregisterForActivityResults(ActivityHostedRouter.java:78)
      2. com.bluelinelabs.conductor.Controller.performDestroy(Controller.java:854)
      3. com.bluelinelabs.conductor.Controller.removeViewReference(Controller.java:795)
      4. com.bluelinelabs.conductor.Controller.detach(Controller.java:765)
      5. com.bluelinelabs.conductor.Controller$7.onViewDetachedFromWindow(Controller.java:834)
      5 frames
    3. Android Platform
      ActivityThread.main
      1. android.view.View.dispatchDetachedFromWindow(View.java:13588)
      2. android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:2838)
      3. android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:2835)
      4. android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:2835)
      5. android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:2835)
      6. android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:2835)
      7. android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:2835)
      8. android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:2835)
      9. android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:2835)
      10. android.view.ViewRootImpl.dispatchDetachedFromWindow(ViewRootImpl.java:2984)
      11. android.view.ViewRootImpl.doDie(ViewRootImpl.java:5502)
      12. android.view.ViewRootImpl.die(ViewRootImpl.java:5479)
      13. android.view.WindowManagerGlobal.removeViewLocked(WindowManagerGlobal.java:369)
      14. android.view.WindowManagerGlobal.removeView(WindowManagerGlobal.java:324)
      15. android.view.WindowManagerImpl.removeViewImmediate(WindowManagerImpl.java:116)
      16. android.app.ActivityThread.handleDestroyActivity(ActivityThread.java:3775)
      17. android.app.ActivityThread.access$1500(ActivityThread.java:154)
      18. android.app.ActivityThread$H.handleMessage(ActivityThread.java:1375)
      19. android.os.Handler.dispatchMessage(Handler.java:102)
      20. android.os.Looper.loop(Looper.java:135)
      21. android.app.ActivityThread.main(ActivityThread.java:5294)
      21 frames
    4. Java RT
      Method.invoke
      1. java.lang.reflect.Method.invoke(Method.java)
      2. java.lang.reflect.Method.invoke(Method.java:372)
      2 frames
    5. Android
      ZygoteInit.main
      1. com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904)
      2. com.android.internal.os.ZygoteInit.main(ZygoteInit.java:699)
      2 frames