title: PlaceHolder animates when start typing in TextField in iOS
body: <p>How to set this type of animation in <code>UITextField</code>? Nowadays, Many apps are using this.</p>
  
  <p><a href="https://i.stack.imgur.com/LVWjf.gif" rel="noreferrer"><img src="https://i.stack.imgur.com/LVWjf.gif" alt="enter image description here"></a></p>