title: How do I get the text from UITextField into an NSString?
body: <p>I've tried various methods, which all give me warnings. Such as <code>userName = [NSString stringWithFormat:@"%@", [yournamefield stringValue]];</code> which just gives me a warning of</p>
  
  <blockquote>
    <p>'UITextField' may not respond to '-stringValue'</p>
  </blockquote>
  
  <p>How do i do this?</p>