title: A 'Done' button in the Action Bar?
body: <p>In the Google Calendar app, there is a 'Done' button in the top right corner</p>
  
  <p><a href="https://i.stack.imgur.com/OiQHG.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/OiQHG.png" alt="enter image description here"></a></p>
  
  <p>To reproduce this, is a custom view containing a TextView on the right needed to replace the default on in the ActionBar (using <code>.setCustomView()</code>)? If so, would this also replace the existing title, home/back button on the left, etc.? If so, does that mean the custom view will need to include those again?</p>
  
  <p>What is the canonical approach?</p>
  
  <p>Thanks</p>