title: How to present UIViewController as partial view?
body: <p>For example, the Music app's "now playing" screen and the Mail app's email composition screen as shown below:</p>
  
  <p><a href="https://i.stack.imgur.com/FTLNb.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/FTLNbm.jpg" alt="modal example screenshot"></a> <a href="https://i.stack.imgur.com/1GHWJ.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/1GHWJm.jpg" alt="modal example screenshot"></a></p>
  
  <p>How do I present my views like that? I'm assuming it can't be achieved purely using storyboards alone as all options seem to cover the full screen and not the partial modals as required. </p>