title: How to display UIView over keyboard in iOS
body: <p>I want to create a simple view over keyboard, when users tap "Attach" button in inputAccessoryView. 
  Something like this:</p>
  
  <p><a href="https://i.stack.imgur.com/ghSxW.png" rel="noreferrer"><img src="https://i.stack.imgur.com/ghSxW.png" alt="enter image description here"></a></p>
  
  <p>Is there an easy way to do it? Or i should create my custom keyboard?</p>