java.lang.NullPointerException: Attempt to invoke virtual method 'int jp.bebeit.fuyokeisan.a.a()' on a null object reference

teratail.com | 1 week ago
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  1. 0

    Android - Android Viewpagerを利用していて,起動時に強制終了する端末が一部ある問題。(62743)|teratail

    teratail.com | 1 week ago
    java.lang.NullPointerException: Attempt to invoke virtual method 'int jp.bebeit.fuyokeisan.a.a()' on a null object reference
  2. 0

    java.lang.NullPointerException: Attempt to invoke virtual method 'int java.lang.String.length()' on a null object reference

    GitHub | 1 year ago | ratnesh-ray
    java.lang.NullPointerException: Attempt to invoke virtual method 'int java.lang.String.length()' on a null object reference
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    Root Cause Analysis

    1. java.lang.NullPointerException

      Attempt to invoke virtual method 'int jp.bebeit.fuyokeisan.a.a()' on a null object reference

      at jp.bebeit.fuyokeisan.e.l()
    2. jp.bebeit.fuyokeisan
      e.onStart
      1. jp.bebeit.fuyokeisan.e.l(Unknown Source)
      2. jp.bebeit.fuyokeisan.e.k(Unknown Source)
      3. jp.bebeit.fuyokeisan.e.a(Unknown Source)
      4. jp.bebeit.fuyokeisan.e.onStart(Unknown Source)
      4 frames
    3. Android Support v4
      ViewPager.onMeasure
      1. android.support.v4.app.Fragment.performStart(Unknown Source)
      2. android.support.v4.app.v.a(Unknown Source)
      3. android.support.v4.app.v.a(Unknown Source)
      4. android.support.v4.app.v.d(Unknown Source)
      5. android.support.v4.app.v.f(Unknown Source)
      6. android.support.v4.app.v.b(Unknown Source)
      7. android.support.v4.app.h.d(Unknown Source)
      8. android.support.v4.app.x.b(Unknown Source)
      9. android.support.v4.view.ViewPager.a(Unknown Source)
      10. android.support.v4.view.ViewPager.c(Unknown Source)
      11. android.support.v4.view.ViewPager.onMeasure(Unknown Source)
      11 frames
    4. Android Platform
      View.measure
      1. android.view.View.measure(View.java:17520)
      2. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5464)
      3. android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1436)
      4. android.widget.LinearLayout.measureVertical(LinearLayout.java:722)
      5. android.widget.LinearLayout.onMeasure(LinearLayout.java:613)
      6. android.view.View.measure(View.java:17520)
      6 frames
    5. Android Support v4
      DrawerLayout.onMeasure
      1. android.support.v4.widget.DrawerLayout.onMeasure(Unknown Source)
      1 frame
    6. Android Platform
      FrameLayout.onMeasure
      1. android.view.View.measure(View.java:17520)
      2. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5464)
      3. android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
      3 frames
    7. Android v7
      ContentFrameLayout.onMeasure
      1. android.support.v7.widget.ContentFrameLayout.onMeasure(Unknown Source)
      1 frame
    8. Android Platform
      FrameLayout.onMeasure
      1. android.view.View.measure(View.java:17520)
      2. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5464)
      3. android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1436)
      4. android.widget.LinearLayout.measureVertical(LinearLayout.java:722)
      5. android.widget.LinearLayout.onMeasure(LinearLayout.java:613)
      6. android.view.View.measure(View.java:17520)
      7. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5464)
      8. android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
      9. android.view.View.measure(View.java:17520)
      10. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5464)
      11. android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1436)
      12. android.widget.LinearLayout.measureVertical(LinearLayout.java:722)
      13. android.widget.LinearLayout.onMeasure(LinearLayout.java:613)
      14. android.view.View.measure(View.java:17520)
      15. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5464)
      16. android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
      16 frames
    9. Android
      PhoneWindow$DecorView.onMeasure
      1. com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2563)
      1 frame
    10. Android Platform
      ActivityThread.main
      1. android.view.View.measure(View.java:17520)
      2. android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2005)
      3. android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1170)
      4. android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1376)
      5. android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1058)
      6. android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5796)
      7. android.view.Choreographer$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$FrameDisplayEventReceiver.run(Choreographer.java:753)
      11. android.os.Handler.handleCallback(Handler.java:739)
      12. android.os.Handler.dispatchMessage(Handler.java:95)
      13. android.os.Looper.loop(Looper.java:211)
      14. android.app.ActivityThread.main(ActivityThread.java:5335)
      14 frames
    11. Java RT
      Method.invoke
      1. java.lang.reflect.Method.invoke(Native Method)
      2. java.lang.reflect.Method.invoke(Method.java:372)
      2 frames
    12. Android
      ZygoteInit.main
      1. com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1016)
      2. com.android.internal.os.ZygoteInit.main(ZygoteInit.java:811)
      2 frames