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

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  1. 0

    I have a listview which is being populated using firebase but i get error when i try to switch activity on clicking on the listview item?

    Stack Overflow | 6 months ago | Shubham Chauhan
    java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.lang.Object.toString()' on a null object reference
  2. 0

    Android Null Pointer Exception In AdapterClass

    Stack Overflow | 3 months ago | Joseph Joey
    java.lang.NullPointerException: Attempt to invoke virtual method 'int android.view.View.getImportantForAccessibility()' on a null object reference
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  4. 0

    How to display the data from database by ListView on Android

    Stack Overflow | 12 months ago | Kaan
    java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.lang.Object.toString()' on a null object reference
  5. 0

    Displaying Firebase child in ListView Error

    Stack Overflow | 1 month ago | Joseph Jay May
    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
    ViewGroup.layout
    1. android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:394)
    2. android.widget.ArrayAdapter.getView(ArrayAdapter.java:362)
    3. android.widget.AbsListView.obtainView(AbsListView.java:2344)
    4. android.widget.ListView.makeAndAddView(ListView.java:1864)
    5. android.widget.ListView.fillDown(ListView.java:698)
    6. android.widget.ListView.fillFromTop(ListView.java:759)
    7. android.widget.ListView.layoutChildren(ListView.java:1659)
    8. android.widget.AbsListView.onLayout(AbsListView.java:2148)
    9. android.view.View.layout(View.java:15636)
    10. android.view.ViewGroup.layout(ViewGroup.java:4967)
    11. android.widget.LinearLayout.setChildFrame(LinearLayout.java:1703)
    12. android.widget.LinearLayout.layoutVertical(LinearLayout.java:1557)
    13. android.widget.LinearLayout.onLayout(LinearLayout.java:1466)
    14. android.view.View.layout(View.java:15636)
    15. android.view.ViewGroup.layout(ViewGroup.java:4967)
    16. android.widget.RelativeLayout.onLayout(RelativeLayout.java:1077)
    17. android.view.View.layout(View.java:15636)
    18. android.view.ViewGroup.layout(ViewGroup.java:4967)
    19. android.widget.FrameLayout.layoutChildren(FrameLayout.java:573)
    20. android.widget.FrameLayout.onLayout(FrameLayout.java:508)
    21. android.view.View.layout(View.java:15636)
    22. android.view.ViewGroup.layout(ViewGroup.java:4967)
    22 frames
  3. Android v7
    ActionBarOverlayLayout.onLayout
    1. android.support.v7.widget.ActionBarOverlayLayout.onLayout(ActionBarOverlayLayout.java:435)
    1 frame
  4. Android Platform
    ActivityThread.main
    1. android.view.View.layout(View.java:15636)
    2. android.view.ViewGroup.layout(ViewGroup.java:4967)
    3. android.widget.FrameLayout.layoutChildren(FrameLayout.java:573)
    4. android.widget.FrameLayout.onLayout(FrameLayout.java:508)
    5. android.view.View.layout(View.java:15636)
    6. android.view.ViewGroup.layout(ViewGroup.java:4967)
    7. android.widget.LinearLayout.setChildFrame(LinearLayout.java:1703)
    8. android.widget.LinearLayout.layoutVertical(LinearLayout.java:1557)
    9. android.widget.LinearLayout.onLayout(LinearLayout.java:1466)
    10. android.view.View.layout(View.java:15636)
    11. android.view.ViewGroup.layout(ViewGroup.java:4967)
    12. android.widget.FrameLayout.layoutChildren(FrameLayout.java:573)
    13. android.widget.FrameLayout.onLayout(FrameLayout.java:508)
    14. android.view.View.layout(View.java:15636)
    15. android.view.ViewGroup.layout(ViewGroup.java:4967)
    16. android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2072)
    17. android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1829)
    18. android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1054)
    19. android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5786)
    20. android.view.Choreographer$CallbackRecord.run(Choreographer.java:767)
    21. android.view.Choreographer.doCallbacks(Choreographer.java:580)
    22. android.view.Choreographer.doFrame(Choreographer.java:550)
    23. android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:753)
    24. android.os.Handler.handleCallback(Handler.java:739)
    25. android.os.Handler.dispatchMessage(Handler.java:95)
    26. android.os.Looper.loop(Looper.java:135)
    27. android.app.ActivityThread.main(ActivityThread.java:5289)
    27 frames
  5. Java RT
    Method.invoke
    1. java.lang.reflect.Method.invoke(Native Method)
    2. java.lang.reflect.Method.invoke(Method.java:372)
    2 frames
  6. Android
    ZygoteInit.main
    1. com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
    2. com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
    2 frames