java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v4.app.Fragment.setMenuVisibility(boolean)' on a null object reference

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  1. 0

    Why is null object reference is returned in Tab Layout?

    Stack Overflow | 1 month ago | Aadesh Chaudhary
    java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v4.app.Fragment.setMenuVisibility(boolean)' on a null object reference
  2. 0

    Add remove fragment dynamically in FragmentPagerAdapter causes null exception

    Stack Overflow | 11 months ago | jason.kaisersmith
    Java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v4.app.FragmentManagerImpl.performPendingDeferredStart(android.support.v4.app.Fragment)' on a null object reference
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  4. 0

    FragmentManager return null

    Stack Overflow | 5 months ago | EricHo
    java.lang.NullPointerException: Attempt to invoke virtual method 'android.support.v4.app.FragmentTransaction android.support.v4.app.FragmentTransaction.replace(int, android.support.v4.app.Fragment)' on a null object reference

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    Root Cause Analysis

    1. java.lang.NullPointerException

      Attempt to invoke virtual method 'void android.support.v4.app.Fragment.setMenuVisibility(boolean)' on a null object reference

      at android.support.v4.app.FragmentStatePagerAdapter.instantiateItem()
    2. Android Support v4
      ViewPager.setCurrentItem
      1. android.support.v4.app.FragmentStatePagerAdapter.instantiateItem(FragmentStatePagerAdapter.java:120)
      2. android.support.v4.view.ViewPager.addNewItem(ViewPager.java:1006)
      3. android.support.v4.view.ViewPager.populate(ViewPager.java:1220)
      4. android.support.v4.view.ViewPager.setCurrentItemInternal(ViewPager.java:670)
      5. android.support.v4.view.ViewPager.setCurrentItemInternal(ViewPager.java:632)
      6. android.support.v4.view.ViewPager.setCurrentItem(ViewPager.java:613)
      6 frames
    3. com.example.aadesh
      DashboardActivity$1.onTabSelected
      1. com.example.aadesh.khabriuncle.DashboardActivity$1.onTabSelected(DashboardActivity.java:111)
      1 frame
    4. android.support.design
      TabLayout$TabView.performClick
      1. android.support.design.widget.TabLayout.dispatchTabSelected(TabLayout.java:1149)
      2. android.support.design.widget.TabLayout.selectTab(TabLayout.java:1142)
      3. android.support.design.widget.TabLayout.selectTab(TabLayout.java:1112)
      4. android.support.design.widget.TabLayout$Tab.select(TabLayout.java:1407)
      5. android.support.design.widget.TabLayout$TabView.performClick(TabLayout.java:1511)
      5 frames
    5. Android Platform
      ActivityThread.main
      1. android.view.View$PerformClick.run(View.java:19881)
      2. android.os.Handler.handleCallback(Handler.java:739)
      3. android.os.Handler.dispatchMessage(Handler.java:95)
      4. android.os.Looper.loop(Looper.java:135)
      5. android.app.ActivityThread.main(ActivityThread.java:5292)
      5 frames
    6. Java RT
      Method.invoke
      1. java.lang.reflect.Method.invoke(Native Method)
      2. java.lang.reflect.Method.invoke(Method.java:372)
      2 frames
    7. Android
      ZygoteInit.main
      1. com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904)
      2. com.android.internal.os.ZygoteInit.main(ZygoteInit.java:699)
      2 frames