title: RecyclerView 2 lists in one
body: <p>I am trying to create something similar to this:</p>
  
  <p><a href="https://i.stack.imgur.com/BR6H7.png" rel="nofollow noreferrer">RecyclerView</a></p>
  
  <p>Instead of folders and files I want to have incomplete items and completed items.</p>
  
  <p>I am new to RecyclerViews, how would I manage to get two unrelated lists such as folders and files into one RecyclerView that scrolls as one?</p>