java - 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

The accepted answer works fine, but @MaciejPigulski gave more clear and neat solution in the comment below. I just putting it as an answer here. Here's my working code.

mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {

    @Override
    public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
        super.onScrolled(recyclerView, dx, dy);
        if (dy > 0) {
            // Scrolling up
        } else {
            // Scrolling down
        }
    }

    @Override
    public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
        super.onScrollStateChanged(recyclerView, newState);

        if (newState == AbsListView.OnScrollListener.SCROLL_STATE_FLING) {
            // Do something
        } else if (newState == AbsListView.OnScrollListener.SCROLL_STATE_TOUCH_SCROLL) {
            // Do something
        } else {
            // Do something
        }
    }
});