Android itemAnimation scroll?

Question

Android

Good afternoon, why doesn't animation work for recyclerView when scrolling.

RecyclerView.ItemAnimator itemAnimator = new FadeInDownAnimator();
        itemAnimator.setAddDuration(200);
        itemAnimator.setRemoveDuration(500);
        recyclerView.setItemAnimator(itemAnimator);

Answer 1

And why should it work when paging? It works when adding/removing/changing elements, and then, despite the fact that you have properly notified the adapter about this action.