java.lang.NullPointerException: Attempt to invoke interface method 'void android.animation.Animator$AnimatorListener.onAnimationEnd(android.animation.Animator)' on a null object reference

Stack Overflow | user1701153 | 4 months ago
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    Stack Overflow | 4 months ago | user1701153
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Root Cause Analysis

  1. java.lang.NullPointerException

    Attempt to invoke interface method 'void android.animation.Animator$AnimatorListener.onAnimationEnd(android.animation.Animator)' on a null object reference

    at android.animation.ValueAnimator.endAnimation()
  2. Android Platform
    ActivityThread.main
    1. android.animation.ValueAnimator.endAnimation(ValueAnimator.java:1239)
    2. android.animation.ValueAnimator.cancel(ValueAnimator.java:1140)
    3. android.animation.ObjectAnimator.animateValue(ObjectAnimator.java:974)
    4. android.animation.ValueAnimator.animationFrame(ValueAnimator.java:1384)
    5. android.animation.ValueAnimator.doAnimationFrame(ValueAnimator.java:1427)
    6. android.animation.ValueAnimator$AnimationHandler.doAnimationFrame(ValueAnimator.java:759)
    7. android.animation.ValueAnimator$AnimationHandler$1.run(ValueAnimator.java:801)
    8. android.view.Choreographer$CallbackRecord.run(Choreographer.java:920)
    9. android.view.Choreographer.doCallbacks(Choreographer.java:695)
    10. android.view.Choreographer.doFrame(Choreographer.java:628)
    11. android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:906)
    12. android.os.Handler.handleCallback(Handler.java:739)
    13. android.os.Handler.dispatchMessage(Handler.java:95)
    14. android.os.Looper.loop(Looper.java:158)
    15. android.app.ActivityThread.main(ActivityThread.java:7229)
    15 frames
  3. Java RT
    Method.invoke
    1. java.lang.reflect.Method.invoke(Native Method)
    1 frame
  4. Android
    ZygoteInit.main
    1. com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
    2. com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)
    2 frames