Fix absolute RecyclerView scroll when items change size and scroll callback is not received

CorrectAbsolutRecyclerViewScroll.java

recyclerView.addOnScrollListener(new RecyclerScrollListener());

private static class RecyclerScrollListener extends RecyclerView.OnScrollListener {

    private int overallYScroll;

    @Override
    public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
        overallYScroll += dy;

        //If first item is visible, override absolute scroll with its position in the RecyclerView.
        RecyclerView.ViewHolder viewHolder = recyclerView.findViewHolderForAdapterPosition(0);
        if (viewHolder != null) {
            overallYScroll = -viewHolder.itemView.getTop();
            //Add RecyclerView padding if necessary (use clipToPadding=false if you set a padding on it.)
            //overallYScroll += getResources().getDimensionPixelOffset(R.dimen.padding_top_recyclerview);
        }

        //use overallYScroll
    }
}