java.lang.NullPointerException: Attempt to invoke interface method 'int java.util.List.size()' on a null object reference

Stack Overflow | pavithra | 2 weeks ago
tip
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  1. 0
    samebug tip
    You cannot update your adapter contents in the background. Prepare your data on the background thread and then pass it to the main thread to update the adapter and call notify.
  2. 0
    samebug tip
    Also, you should dispatch events as soon as they happen, ReciclerView already bundles all updates.
  3. 0
    samebug tip
    You have to provide valid identical number for each child items.
    via GitHub by h6ah4i
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    error while passing the value to php inside adapter in post method

    Stack Overflow | 2 weeks ago | pavithra
    java.lang.NullPointerException: Attempt to invoke interface method 'int java.util.List.size()' on a null object reference
  6. 0

    BaseMultiItemQuickAdapter 报错

    GitHub | 6 months ago | wuzhaohui026
    java.lang.NullPointerException: Attempt to invoke virtual method 'int java.lang.Integer.intValue()' on a null object reference

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    Root Cause Analysis

    1. java.lang.NullPointerException

      Attempt to invoke interface method 'int java.util.List.size()' on a null object reference

      at info.sherpify.pavithracs.sherpifys.adapter.RecyclerViewAdapterSearch.getItemCount()
    2. info.sherpify.pavithracs
      RecyclerViewAdapterSearch.getItemCount
      1. info.sherpify.pavithracs.sherpifys.adapter.RecyclerViewAdapterSearch.getItemCount(RecyclerViewAdapterSearch.java:85)
      1 frame
    3. Android v7
      RecyclerView.onLayout
      1. android.support.v7.widget.RecyclerView.dispatchLayoutStep1(RecyclerView.java:3289)
      2. android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:3186)
      3. android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:3632)
      3 frames
    4. Android Platform
      ViewGroup.layout
      1. android.view.View.layout(View.java:15689)
      2. android.view.ViewGroup.layout(ViewGroup.java:5040)
      2 frames
    5. Android Support v4
      SwipeRefreshLayout.onLayout
      1. android.support.v4.widget.SwipeRefreshLayout.onLayout(SwipeRefreshLayout.java:636)
      1 frame
    6. Android Platform
      ActivityThread.main
      1. android.view.View.layout(View.java:15689)
      2. android.view.ViewGroup.layout(ViewGroup.java:5040)
      3. android.widget.LinearLayout.setChildFrame(LinearLayout.java:1703)
      4. android.widget.LinearLayout.layoutVertical(LinearLayout.java:1557)
      5. android.widget.LinearLayout.onLayout(LinearLayout.java:1466)
      6. android.view.View.layout(View.java:15689)
      7. android.view.ViewGroup.layout(ViewGroup.java:5040)
      8. android.widget.FrameLayout.layoutChildren(FrameLayout.java:579)
      9. android.widget.FrameLayout.onLayout(FrameLayout.java:514)
      10. android.view.View.layout(View.java:15689)
      11. android.view.ViewGroup.layout(ViewGroup.java:5040)
      12. android.widget.LinearLayout.setChildFrame(LinearLayout.java:1703)
      13. android.widget.LinearLayout.layoutVertical(LinearLayout.java:1557)
      14. android.widget.LinearLayout.onLayout(LinearLayout.java:1466)
      15. android.view.View.layout(View.java:15689)
      16. android.view.ViewGroup.layout(ViewGroup.java:5040)
      17. android.widget.FrameLayout.layoutChildren(FrameLayout.java:579)
      18. android.widget.FrameLayout.onLayout(FrameLayout.java:514)
      19. android.view.View.layout(View.java:15689)
      20. android.view.ViewGroup.layout(ViewGroup.java:5040)
      21. android.widget.LinearLayout.setChildFrame(LinearLayout.java:1703)
      22. android.widget.LinearLayout.layoutVertical(LinearLayout.java:1557)
      23. android.widget.LinearLayout.onLayout(LinearLayout.java:1466)
      24. android.view.View.layout(View.java:15689)
      25. android.view.ViewGroup.layout(ViewGroup.java:5040)
      26. android.widget.FrameLayout.layoutChildren(FrameLayout.java:579)
      27. android.widget.FrameLayout.onLayout(FrameLayout.java:514)
      28. android.view.View.layout(View.java:15689)
      29. android.view.ViewGroup.layout(ViewGroup.java:5040)
      30. android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2116)
      31. android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1873)
      32. android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1084)
      33. android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5990)
      34. android.view.Choreographer$CallbackRecord.run(Choreographer.java:767)
      35. android.view.Choreographer.doCallbacks(Choreographer.java:580)
      36. android.view.Choreographer.doFrame(Choreographer.java:550)
      37. android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:753)
      38. android.os.Handler.handleCallback(Handler.java:739)
      39. android.os.Handler.dispatchMessage(Handler.java:95)
      40. android.os.Looper.loop(Looper.java:135)
      41. android.app.ActivityThread.main(ActivityThread.java:5343)
      41 frames
    7. Java RT
      Method.invoke
      1. java.lang.reflect.Method.invoke(Native Method)
      2. java.lang.reflect.Method.invoke(Method.java:372)
      2 frames
    8. Android
      ZygoteInit.main
      1. com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:905)
      2. com.android.internal.os.ZygoteInit.main(ZygoteInit.java:700)
      2 frames