title: RecyclerView : One OnClickListener over various items?
body: <p>I'm using a RecyclerView with 2 holder types (Title and Item) to display the activity's content. The quantity of Items per Title is undefined.
  Just like this :</p>
  
  <pre><code>Title
  -Item
  -Item
  
  Title
  -Item
  
  Title
  -Item
  -Item
  -Item
  </code></pre>
  
  <p>I'm looking for a clue. How can I set an OnClickListener on each group (Title + Items), so that the "OnClick gray wave effect" browse the entire selected group without interruption?</p>