title: get current length of text as typed in UITextField
body: <p>I am using UITextFieldDelegate but the method I am using:</p>
  
  <pre><code>- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
  </code></pre>
  
  <p>Only get's fired before the text is edited.  I need the length of the text as it stands after they type a letter.  Using the method above I am always 1 letter behind.</p>