title: Lazy loading effect for RecyclerView
body: <p>Android Studio 2.3.3.</p>
  
  <p>I have Fragment that shows list items. I use component <strong>android.support.v7.widget.RecyclerView</strong>  to show list. OK. It's work fine.</p>
  
  <p>Now I need to do lazy loading of items (scrolling vertically):</p>
  
  <ol>
  <li>reached the <strong>top</strong> of the list</li>
  <li>reached the <strong>bottom</strong> of the list</li>
  </ol>
  
  <p>Here example:</p>
  
  <p><a href="https://i.stack.imgur.com/HThCYl.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/HThCYl.png" alt="Example of lazy loading"></a></p>
  
  <p>Is it possible by <strong>RecyclerView</strong> or I need to use another component or library?</p>