java.lang.NullPointerException

Stack Overflow | Cyberlander | 8 months ago
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  1. 0

    Fatal Exception: java.lang.NullPointerException while using ViewPager

    Stack Overflow | 10 months ago | user669231
    java.lang.NullPointerException: Attempt to invoke virtual method 'android.os.Handler android.support.v4.app.FragmentHostCallback.getHandler()' on a null object reference
  2. 0

    NullPointerException on setMenuVisibility

    Stack Overflow | 10 months ago | MAOL
    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. filpgame 11 times, last 3 months ago
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Root Cause Analysis

  1. java.lang.NullPointerException

    No message provided

    at android.support.v4.app.BackStackRecord.doAddOp()
  2. Android Support v4
    ViewPager.onMeasure
    1. android.support.v4.app.BackStackRecord.doAddOp(BackStackRecord.java:418)
    2. android.support.v4.app.BackStackRecord.add(BackStackRecord.java:413)
    3. android.support.v4.app.FragmentPagerAdapter.instantiateItem(FragmentPagerAdapter.java:103)
    4. android.support.v4.view.ViewPager.addNewItem(ViewPager.java:1003)
    5. android.support.v4.view.ViewPager.populate(ViewPager.java:1151)
    6. android.support.v4.view.ViewPager.populate(ViewPager.java:1085)
    7. android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1611)
    7 frames
  3. Android Platform
    ViewGroup.measureChildWithMargins
    1. android.view.View.measure(View.java:17331)
    2. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5376)
    2 frames
  4. android.support.design
    CoordinatorLayout.onMeasure
    1. android.support.design.widget.CoordinatorLayout.onMeasureChild(CoordinatorLayout.java:671)
    2. android.support.design.widget.HeaderScrollingViewBehavior.onMeasureChild(HeaderScrollingViewBehavior.java:90)
    3. android.support.design.widget.AppBarLayout$ScrollingViewBehavior.onMeasureChild(AppBarLayout.java:1319)
    4. android.support.design.widget.CoordinatorLayout.onMeasure(CoordinatorLayout.java:736)
    4 frames
  5. Android Platform
    FrameLayout.onMeasure
    1. android.view.View.measure(View.java:17331)
    2. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5376)
    3. android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
    3 frames
  6. Android v7
    ContentFrameLayout.onMeasure
    1. android.support.v7.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:135)
    1 frame
  7. Android Platform
    FrameLayout.onMeasure
    1. android.view.View.measure(View.java:17331)
    2. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5376)
    3. android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1410)
    4. android.widget.LinearLayout.measureVertical(LinearLayout.java:695)
    5. android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
    6. android.view.View.measure(View.java:17331)
    7. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5376)
    8. android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
    9. android.view.View.measure(View.java:17331)
    10. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5376)
    11. android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1410)
    12. android.widget.LinearLayout.measureVertical(LinearLayout.java:695)
    13. android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
    14. android.view.View.measure(View.java:17331)
    15. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5376)
    16. android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
    16 frames
  8. Android
    PhoneWindow$DecorView.onMeasure
    1. com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2548)
    1 frame
  9. Android Platform
    ActivityThread.main
    1. android.view.View.measure(View.java:17331)
    2. android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2279)
    3. android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1393)
    4. android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1592)
    5. android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1251)
    6. android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6540)
    7. android.view.Choreographer$CallbackRecord.run(Choreographer.java:813)
    8. android.view.Choreographer.doCallbacks(Choreographer.java:613)
    9. android.view.Choreographer.doFrame(Choreographer.java:583)
    10. android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:799)
    11. android.os.Handler.handleCallback(Handler.java:733)
    12. android.os.Handler.dispatchMessage(Handler.java:95)
    13. android.os.Looper.loop(Looper.java:146)
    14. android.app.ActivityThread.main(ActivityThread.java:5593)
    14 frames
  10. Java RT
    Method.invoke
    1. java.lang.reflect.Method.invokeNative(Native Method)
    2. java.lang.reflect.Method.invoke(Method.java:515)
    2 frames
  11. Android
    ZygoteInit.main
    1. com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1283)
    2. com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1099)
    2 frames
  12. Android Platform
    NativeStart.main
    1. dalvik.system.NativeStart.main(Native Method)
    1 frame