title: Make UITextView parent be its own inputAccessoryView
body: <p>I'm trying to achieve a similar keyboard interaction that Messages has in iOS 7. I have a <code>UIView</code> which contains a <code>UITextView</code>, and when the user selects it to start typing, I want to make this <code>UIView</code> the <code>inputAccessoryView</code>. This would take care of the animation for me, as well as the new <code>UIScrollView</code> keyboard dismiss interaction in iOS 7. </p>
  
  <p>When the <code>UITextView</code> begins editing, I'm trying to set its <code>inputAccessoryView</code> to its parent <code>UIView</code> (which is already in the view hierarchy). The keyboard appears but not with an accessory view.</p>
  
  <p>I've read some people are using a duo of <code>UITextField</code>s to make this work, but that seems like a bad way to achieve this.</p>
  
  <p>Any suggestions?</p>