title: Is there a delegate call for when the text is changed on a UITextView?
body: <p>When I set my <code>UITextView</code> programmatically like this:</p>
  
  <p><code>[self.textView setText:@""];</code></p>
  
  <p>The delegate method <code>textViewDidChange:</code> does not get called.  Is there a way I can find that <em>without</em> making a <code>UITextView</code> subclass?</p>