title: iphone / objective-c how to check to see if a textfield is empty
body: <p>I have a typical textfield in an iphone app, and in ViewWillAppear I would like to do a little logic using the text in the text field.</p>
  
  <p>If txtField.text is empty, I would like the next textfield, txtField2 to be selected for typing.</p>
  
  <p>I am trying to achieve this through :</p>
  
  <pre><code>if (txtField.text != @"") [txtField2 becomeFirstResponder];
  </code></pre>
  
  <p>but after some testing, txtField.text (whilst empty), will still not register as being equal to @"" 
  What am I missing?</p>