public void setAssociatedRecyclerView(RecyclerView recyclerView) {
        recyclerView.addOnScrollListener(associatedRecyclerViewListener);
        updateRecyclerViewScrollState(recyclerView);
    }
Set associated list view, then this layout will only be able to drag down when the list
view is scrolled to top.

@param recyclerView
scrolllayout/src/main/java/com/yinglan/scrolllayout/ScrollLayout.java