IllegalStateException crash in example application

[ylogx]

Attached is the stacktrace:

10-25 15:07:56.216  15110-15110/? E/AndroidRuntime﹕ FATAL EXCEPTION: main
    Process: com.rahul.bounce, PID: 15110
    java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState
            at android.app.FragmentManagerImpl.checkStateLoss(FragmentManager.java:1330)
            at android.app.FragmentManagerImpl.enqueueAction(FragmentManager.java:1348)
            at android.app.BackStackRecord.commitInternal(BackStackRecord.java:729)
            at android.app.BackStackRecord.commit(BackStackRecord.java:705)
            at com.rahul.bounce.MainActivity$16.onAnimationEnd(MainActivity.java:705)
            at android.animation.AnimatorSet$AnimatorSetListener.onAnimationEnd(AnimatorSet.java:854)
            at android.animation.ValueAnimator.endAnimation(ValueAnimator.java:1171)
            at android.animation.ValueAnimator$AnimationHandler.doAnimationFrame(ValueAnimator.java:722)
            at android.animation.ValueAnimator$AnimationHandler.run(ValueAnimator.java:738)
            at android.view.Choreographer$CallbackRecord.run(Choreographer.java:767)
            at android.view.Choreographer.doCallbacks(Choreographer.java:580)
            at android.view.Choreographer.doFrame(Choreographer.java:549)
            at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:753)
            at android.os.Handler.handleCallback(Handler.java:746)
            at android.os.Handler.dispatchMessage(Handler.java:95)
            at android.os.Looper.loop(Looper.java:135)
            at android.app.ActivityThread.main(ActivityThread.java:5343)
            at java.lang.reflect.Method.invoke(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:372)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:905)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:700)