title: How to manage the Refresh/Reload of a View on iOS?
body: <p>I would like to make 3 things and I don't know how :(</p>
  
  <ul>
  <li>Make an automatic refresh every 5 minutes on my View Controllers</li>
  <li>Add a reload button on my NavigationBar</li>
  <li>Automatically close my app when passing in Background.</li>
  </ul>
  
  <p>Is there any functions to initialiaze a refresh for example, a kind of countdown from the launch of the app ? </p>
  
  <p>Thanks for all !</p>