title: What is this pop up called?
body: <p>Just a simple question.
  I was asking about the window that comes out when for instance we want to save an image from the Facebook app on iOS to our iPhone. I just wanted to know what is this window called. And is it a ready made class in Xcode like for instance the <code>UIAlertController</code> or its just a <code>UITableView</code> just customised?
  Thanks in advance.</p>
  
  <p><a href="https://i.stack.imgur.com/1zKzR.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/1zKzR.jpg" alt="My question was on the image"></a></p>