title: Programmatically force a UIWebView to go to full screen mode
body: <p>When playing a media file in a  UIWebview (youtube for instance) </p>
  
  <p>there is a button to "fullscreen" the html5 media player - How can I </p>
  
  <ul>
  <li>Know when the player went to full screen</li>
  <li>Force the HTML5 player to go to full screen</li>
  </ul>
  
  <p><img src="https://i.stack.imgur.com/41B4T.png" alt="enter image description here"></p>