RecyclerView scrollToPosition not trigger scrollListener

Question

I'm using RecyclerView, with ScrollListener:

mRecyclerView.setOnScrollListener(new RecyclerView.OnScrollListener()
{
        @Override
        public void onScrollStateChanged(RecyclerView recyclerView, int newState)
        {
            super.onScrollStateChanged(recyclerView, newState);
        }

        @Override
        public void onScrolled(RecyclerView recyclerView, int dx, int dy)
        {
            super.onScrolled(recyclerView, dx, dy);
            // Do my logic
        }
 });

When I scroll with the finger, the scroll listener triggered fine.

But when I scroll progrematically, like that:

mRecyclerView.scrollToPosition(LAST_POSITION);

The scroll listener is not triggered.

Answer 1

I've faced the same issue and found a workaround, which is to use the smoothScrollToPosition in layout manager. This method triggers the scroll listener. So basically this is what I use to have:

recyclerView.scrollToPosition(recyclerAdapter.getItemCount() - 1);

and now I've changed to this:

recyclerView.getLayoutManager().smoothScrollToPosition(recyclerView, null, recyclerAdapter.getItemCount() - 1);

and it's working fine for me.