java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.ListView.setAdapter(android.widget.ListAdapter)' on a null object reference

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    Stack Overflow | 5 months ago | YoonSeok Huh
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    java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.ListView.setAdapter(android.widget.ListAdapter)' on a null object reference
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    Problème de listAdapter

    developpez.net | 1 year ago
    java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.ListView.setAdapter(android.widget.ListAdapter)' on a null object reference

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    Root Cause Analysis

    1. java.lang.NullPointerException

      Attempt to invoke virtual method 'void android.widget.ListView.setAdapter(android.widget.ListAdapter)' on a null object reference

      at com.tistory.whdghks913.exampletabs.Tab1.onCreateView()
    2. com.tistory.whdghks913
      Tab1.onCreateView
      1. com.tistory.whdghks913.exampletabs.Tab1.onCreateView(Tab1.java:52)
      1 frame
    3. Android Support v4
      ViewPager.onMeasure
      1. android.support.v4.app.Fragment.performCreateView(Fragment.java:1478)
      2. android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:927)
      3. android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1104)
      4. android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
      5. android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1460)
      6. android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:472)
      7. android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:141)
      8. android.support.v4.view.ViewPager.populate(ViewPager.java:1068)
      9. android.support.v4.view.ViewPager.populate(ViewPager.java:914)
      10. android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1436)
      10 frames
    4. Android Platform
      ViewGroup.measureChildWithMargins
      1. android.view.View.measure(View.java:17547)
      2. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5535)
      3. android.widget.FrameLayout.onMeasure(FrameLayout.java:436)
      4. android.view.View.measure(View.java:17547)
      5. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5535)
      5 frames
    5. Android
      ActionBarOverlayLayout.onMeasure
      1. com.android.internal.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java:447)
      1 frame
    6. Android Platform
      FrameLayout.onMeasure
      1. android.view.View.measure(View.java:17547)
      2. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5535)
      3. android.widget.FrameLayout.onMeasure(FrameLayout.java:436)
      3 frames
    7. Android
      PhoneWindow$DecorView.onMeasure
      1. com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2615)
      1 frame
    8. Android Platform
      ActivityThread.main
      1. android.view.View.measure(View.java:17547)
      2. android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2015)
      3. android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1173)
      4. android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1379)
      5. android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1061)
      6. android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5885)
      7. android.view.Choreographer$CallbackRecord.run(Choreographer.java:767)
      8. android.view.Choreographer.doCallbacks(Choreographer.java:580)
      9. android.view.Choreographer.doFrame(Choreographer.java:550)
      10. android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:753)
      11. android.os.Handler.handleCallback(Handler.java:739)
      12. android.os.Handler.dispatchMessage(Handler.java:95)
      13. android.os.Looper.loop(Looper.java:135)
      14. android.app.ActivityThread.main(ActivityThread.java:5254)
      14 frames
    9. Java RT
      Method.invoke
      1. java.lang.reflect.Method.invoke(Native Method)
      2. java.lang.reflect.Method.invoke(Method.java:372)
      2 frames
    10. Android
      ZygoteInit.main
      1. com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
      2. com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
      2 frames