CoordinatorLayout with RecyclerView And Collapsing header

Question

I have a layout like the following:

(Toolbar, Header View, Text View, RecyclerView)

I need the header to be collapsed when I scrolling recyclerview\

Answer 1

You can achieve it by having this layout:

    

        

            
            
                .....
            

            

        

       
    

    

You pin your toolbar by having the app:layout_collapseMode="pin" property set. You make RecyclerView properly scrollable by setting app:layout_behavior="@string/appbar_scrolling_view_behavior" and that's pretty much it.

NB! Position of "Choose item" TextView depends on the particular behaviour you want to achieve:

• you can include it as a first element of your RecyclerView's Adapter to scroll it away, once user start scrolling through the RecyclerView;
• you can add it into AppBarLayout so it will always stick on top of the RecyclerView, whenever you scroll it or not;

You can read more here Android Design Support Library and here Design Support Library (III): Coordinator Layout

I hope, it helps!