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

Stack Overflow | ramzixp | 5 months ago
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    Adapter+JSON+CardView+RecyclerView nullpointers - will be bounty here

    Stack Overflow | 5 months ago | ramzixp
    java.lang.NullPointerException: Attempt to invoke interface method 'int java.util.List.size()' on a null object reference
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    空指针异常

    GitHub | 8 months ago | JasonHezz
    java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=100, result=1004, data=Intent { }} to activity {com.lzy.imagepickerdemo/com.lzy.imagepickerdemo.ImagePickerActivity}: java.lang.NullPointerException: Attempt to invoke interface method 'int java.util.List.size()' on a null object reference
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    抛出大量Permission Denied的日志

    GitHub | 5 months ago | aviraxp
    java.lang.NullPointerException: Attempt to invoke interface method 'int java.util.List.size()' on a null object reference
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    抛出大量Permission Denied的日志

    GitHub | 5 months ago | aviraxp
    java.lang.NullPointerException: Attempt to invoke interface method 'int java.util.List.size()' on a null object reference
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    Android Java Http Request Post

    Stack Overflow | 1 year ago | Victor Dolganiuc
    java.lang.NullPointerException: Attempt to invoke interface method 'int java.util.List.size()' 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 music.download.justin.adapters.CardAdapter.getItemCount()
    2. music.download.justin
      CardAdapter.getItemCount
      1. music.download.justin.adapters.CardAdapter.getItemCount(CardAdapter.java:64)
      1 frame
    3. Android v7
      RecyclerView.onMeasure
      1. android.support.v7.widget.RecyclerView.onMeasure(RecyclerView.java:2357)
      1 frame
    4. Android Platform
      View.measure
      1. android.view.View.measure(View.java:18804)
      2. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5954)
      3. android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1465)
      4. android.widget.LinearLayout.measureVertical(LinearLayout.java:748)
      5. android.widget.LinearLayout.onMeasure(LinearLayout.java:630)
      6. android.view.View.measure(View.java:18804)
      7. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5954)
      8. android.widget.FrameLayout.onMeasure(FrameLayout.java:194)
      9. android.view.View.measure(View.java:18804)
      10. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5954)
      11. android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1465)
      12. android.widget.LinearLayout.measureVertical(LinearLayout.java:748)
      13. android.widget.LinearLayout.onMeasure(LinearLayout.java:630)
      14. android.view.View.measure(View.java:18804)
      14 frames
    5. Android Support v4
      ViewPager.onMeasure
      1. android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1488)
      1 frame
    6. Android Platform
      FrameLayout.onMeasure
      1. android.view.View.measure(View.java:18804)
      2. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5954)
      3. android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1465)
      4. android.widget.LinearLayout.measureVertical(LinearLayout.java:748)
      5. android.widget.LinearLayout.onMeasure(LinearLayout.java:630)
      6. android.view.View.measure(View.java:18804)
      7. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5954)
      8. android.widget.FrameLayout.onMeasure(FrameLayout.java:194)
      8 frames
    7. Android v7
      ContentFrameLayout.onMeasure
      1. android.support.v7.internal.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:124)
      1 frame
    8. Android Platform
      ViewGroup.measureChildWithMargins
      1. android.view.View.measure(View.java:18804)
      2. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5954)
      2 frames
    9. Android v7
      ActionBarOverlayLayout.onMeasure
      1. android.support.v7.internal.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java:444)
      1 frame
    10. Android Platform
      FrameLayout.onMeasure
      1. android.view.View.measure(View.java:18804)
      2. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5954)
      3. android.widget.FrameLayout.onMeasure(FrameLayout.java:194)
      4. android.view.View.measure(View.java:18804)
      5. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5954)
      6. android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1465)
      7. android.widget.LinearLayout.measureVertical(LinearLayout.java:748)
      8. android.widget.LinearLayout.onMeasure(LinearLayout.java:630)
      9. android.view.View.measure(View.java:18804)
      10. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5954)
      11. android.widget.FrameLayout.onMeasure(FrameLayout.java:194)
      11 frames
    11. Android
      PhoneWindow$DecorView.onMeasure
      1. com.android.internal.policy.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2643)
      1 frame
    12. Android Platform
      ActivityThread.main
      1. android.view.View.measure(View.java:18804)
      2. android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2112)
      3. android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1228)
      4. android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1464)
      5. android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1119)
      6. android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6060)
      7. android.view.Choreographer$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$FrameDisplayEventReceiver.run(Choreographer.java:844)
      11. android.os.Handler.handleCallback(Handler.java:746)
      12. android.os.Handler.dispatchMessage(Handler.java:95)
      13. android.os.Looper.loop(Looper.java:148)
      14. android.app.ActivityThread.main(ActivityThread.java:5443)
      14 frames
    13. Java RT
      Method.invoke
      1. java.lang.reflect.Method.invoke(Native Method)
      1 frame
    14. Android
      ZygoteInit.main
      1. com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:728)
      2. com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
      2 frames