NestedScrollView 하단감지..

nestedScrollView.setOnScrollChangeListener((NestedScrollView.OnScrollChangeListener) (v, scrollX, scrollY, oldScrollX, oldScrollY) -> {
    View view = (View) v.getChildAt(v.getChildCount() - 1);
    int diff = (view.getBottom() - (v.getHeight() + v.getScrollY()));
    Dlog.d(diff + "");
    if (diff == 0) {
        Dlog.d("more");

    }
});