title: iOS Swift: Move focus from one textfield to another
body: <p>I'm developing an iOS App that uses a PageViewController to wrap several "Chat rooms". I've a TextField in each page and when I swipe in order to move to another page I wanna change the focus from the current page TextField to the new page TextField without losing the keyboard.</p>
  
  <p>I've tried different approaches but I cannot do that, every time I call becomeFirstResponder in the new page TextField the keyboard goes down, then goes up immediately and then the textfields becomes the first responder.</p>
  
  <p>Can you help me?</p>
  
  <p>Thank you!</p>