title: Show UIAlertController over keyboard
body: <p>In iOS 8 and lower show a <code>UIActionSheet</code> when keyboard is presented will present the action sheet over the keyboard. With iOS 9 this is no longer the case.</p>
  
  <p>In my app we have a chat functionality and want the show a action over the keyboard. We used to use <code>UIActionSheet</code> which worked fine until iOS 8. In iOS 9 the action sheet is present behind the keyboard. I've tried both <code>UIActionSheet</code> and <code>UIAlertController</code>.</p>
  
  <p>What we want is a action sheet like in messages.app
  <a href="https://i.stack.imgur.com/6UEX3.png"><img src="https://i.stack.imgur.com/6UEX3.png" alt="Action sheet in messages app."></a></p>
  
  <p>I've tried placing the action sheet in it own window and overriding <code>canBecomeFirstResponder</code> which just made the keyboard disappear.</p>