java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.lang.Object.toString()' on a null object reference

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Root Cause Analysis

  1. java.lang.NullPointerException

    Attempt to invoke virtual method 'java.lang.String java.lang.Object.toString()' on a null object reference

    at android.widget.ArrayAdapter.createViewFromResource()
  2. Android Platform
    FrameLayout.onLayout
    1. android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:401)
    2. android.widget.ArrayAdapter.getView(ArrayAdapter.java:369)
    3. android.widget.AbsListView.obtainView(AbsListView.java:2346)
    4. android.widget.ListView.makeAndAddView(ListView.java:1875)
    5. android.widget.ListView.fillDown(ListView.java:702)
    6. android.widget.ListView.fillFromTop(ListView.java:763)
    7. android.widget.ListView.layoutChildren(ListView.java:1684)
    8. android.widget.AbsListView.onLayout(AbsListView.java:2148)
    9. android.view.View.layout(View.java:16630)
    10. android.view.ViewGroup.layout(ViewGroup.java:5437)
    11. android.widget.LinearLayout.setChildFrame(LinearLayout.java:1743)
    12. android.widget.LinearLayout.layoutVertical(LinearLayout.java:1586)
    13. android.widget.LinearLayout.onLayout(LinearLayout.java:1495)
    14. android.view.View.layout(View.java:16630)
    15. android.view.ViewGroup.layout(ViewGroup.java:5437)
    16. android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
    17. android.widget.FrameLayout.onLayout(FrameLayout.java:273)
    18. android.view.View.layout(View.java:16630)
    19. android.view.ViewGroup.layout(ViewGroup.java:5437)
    20. android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
    21. android.widget.FrameLayout.onLayout(FrameLayout.java:273)
    22. android.view.View.layout(View.java:16630)
    23. android.view.ViewGroup.layout(ViewGroup.java:5437)
    24. android.widget.LinearLayout.setChildFrame(LinearLayout.java:1743)
    25. android.widget.LinearLayout.layoutVertical(LinearLayout.java:1586)
    26. android.widget.LinearLayout.onLayout(LinearLayout.java:1495)
    27. android.view.View.layout(View.java:16630)
    28. android.view.ViewGroup.layout(ViewGroup.java:5437)
    29. android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
    30. android.widget.FrameLayout.onLayout(FrameLayout.java:273)
    31. android.view.View.layout(View.java:16630)
    32. android.view.ViewGroup.layout(ViewGroup.java:5437)
    33. android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
    34. android.widget.FrameLayout.onLayout(FrameLayout.java:273)
    35. android.view.View.layout(View.java:16630)
    36. android.view.ViewGroup.layout(ViewGroup.java:5437)
    37. android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
    38. android.widget.FrameLayout.onLayout(FrameLayout.java:273)
    38 frames
  3. Android
    PhoneWindow$DecorView.onLayout
    1. com.android.internal.policy.PhoneWindow$DecorView.onLayout(PhoneWindow.java:2678)
    1 frame
  4. Android Platform
    ActivityThread.main
    1. android.view.View.layout(View.java:16630)
    2. android.view.ViewGroup.layout(ViewGroup.java:5437)
    3. android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2171)
    4. android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1931)
    5. android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1107)
    6. android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6013)
    7. android.view.Choreographer$CallbackRecord.run(Choreographer.java:858)
    8. android.view.Choreographer.doCallbacks(Choreographer.java:670)
    9. android.view.Choreographer.doFrame(Choreographer.java:606)
    10. android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:844)
    11. android.os.Handler.handleCallback(Handler.java:739)
    12. android.os.Handler.dispatchMessage(Handler.java:95)
    13. android.os.Looper.loop(Looper.java:148)
    14. android.app.ActivityThread.main(ActivityThread.java:5417)
    14 frames
  5. Java RT
    Method.invoke
    1. java.lang.reflect.Method.invoke(Native Method)
    1 frame
  6. Android
    ZygoteInit.main
    1. com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
    2. com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
    2 frames