title: Load more data when ScrollView is scrolled to bottom
body: <p>I've got a scrollView with dinamically loading content. Sometimes there can be a lot of content, so I would like to load more when user scrolls to bottom.</p>
  
  <p>I searced for suitable metods and found two:</p>
  
  <pre><code>onScrollChanged() 
  </code></pre>
  
  <p>and</p>
  
  <pre><code>getScrollY()
  </code></pre>
  
  <p>But I dont know how to use it for my purposes.
  Please give me some advice.</p>