title: Replacing Text in a UITextView
body: <p>i'm trying to write a little concept app which reads the character stream as the user types in a UITextView, and when a certain word is entered it is replaced (sort of like auto-correction). </p>
  
  <p>i looked into using -</p>
  
  <pre><code>(BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text;
  </code></pre>
  
  <p>but so far i had no luck. can anyone give me a hint. </p>
  
  <p>greatly appreciated!</p>
  
  <p>david</p>