Viewpager animation duration setting

private void animatePagerTransition(final boolean forward) { ValueAnimator animator = ValueAnimator.ofInt(0, viewPager.getWidth()); animator.addListener(new Animator.AnimatorListener() { @Override public void onAnimationStart(Animator animation) { } @Override public void onAnimationEnd(Animator animation) { viewPager.endFakeDrag(); } @Override public void onAnimationCancel(Animator animation) { viewPager.endFakeDrag(); } @Override public void onAnimationRepeat(Animator animation) { } }); animator.setInterpolator(new AccelerateInterpolator()); animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() { private int oldDragPosition = 0; @Override public void onAnimationUpdate(ValueAnimator animation) { int dragPosition = (Integer) animation.getAnimatedValue(); int dragOffset = dragPosition - oldDragPosition; oldDragPosition = dragPosition; viewPager.fakeDragBy(dragOffset * (forward ? -1 : 1)); } }); animator.setDuration(AppConstants.PAGER_TRANSITION_DURATION_MS); viewPager.beginFakeDrag(); animator.start(); }

UPDATE:

private int oldDragPosition = 0; private void animatePagerTransition(final boolean forward, int pageCount) { // if previous animation have not finished we can get exception if (pagerAnimation != null) { pagerAnimation.cancel(); } pagerAnimation = getPagerTransitionAnimation(forward, pageCount); if (viewPager.beginFakeDrag()) { // checking that started drag correctly pagerAnimation.start(); } } private Animator getPagerTransitionAnimation(final boolean forward, int pageCount) { ValueAnimator animator = ValueAnimator.ofInt(0, viewPager.getWidth() - 1); animator.addListener(new Animator.AnimatorListener() { @Override public void onAnimationStart(Animator animation) { } @Override public void onAnimationEnd(Animator animation) { viewPager.endFakeDrag(); } @Override public void onAnimationCancel(Animator animation) { viewPager.endFakeDrag(); } @Override public void onAnimationRepeat(Animator animation) { viewPager.endFakeDrag(); oldDragPosition = 0; viewPager.beginFakeDrag(); } }); animator.setInterpolator(new AccelerateInterpolator()); animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() { @Override public void onAnimationUpdate(ValueAnimator animation) { int dragPosition = (Integer) animation.getAnimatedValue(); int dragOffset = dragPosition - oldDragPosition; oldDragPosition = dragPosition; viewPager.fakeDragBy(dragOffset * (forward ? -1 : 1)); } }); animator.setDuration(AppConstants.PAGER_TRANSITION_DURATION_MS / pageCount); // remove divider if you want to make each transition have the same speed as single page transition animator.setRepeatCount(pageCount); return animator; }