RecyclerView scrolled UP/DOWN listener

Question

How do we know if user scrolled down or up in RecyclerView ?

I tried with RecyclerView#OnScrollListener , it gives the amount of vertical scroll and the scroll state. How do we get the last scroll position when started to dragging and scrolled position when scroll state idle.

Answer 1

Try this way:

private static int firstVisibleInListview;

firstVisibleInListview = yourLayoutManager.findFirstVisibleItemPosition();

In your scroll listener:

public void onScrolled(RecyclerView recyclerView, int dx, int dy) 
{
    super.onScrolled(recyclerView, dx, dy);

    int currentFirstVisible = yourLayoutManager.findFirstVisibleItemPosition();

    if(currentFirstVisible > firstVisibleInListview)
       Log.i("RecyclerView scrolled: ", "scroll up!");
    else
       Log.i("RecyclerView scrolled: ", "scroll down!");  

    firstVisibleInListview = currentFirstVisible;

}