title: UITextField not responding to onscreen keyboard presses?
body: <p>I've got a really weird problem whereby I when I click on a <code>UITextField</code> the onscreen keyboard pops up, and I can delete characters in the text field - but I cannot type into it! </p>
  
  <p>Background info:</p>
  
  <p>I'm placing the <code>UITextField</code> into a <code>UITableViewCell</code>, which in turn is being got from a table that is being placed into a <code>UIAlertView</code>. I still have the same problem if I place the <code>UITextField</code> directly into the <code>UIAlertView</code> using the <code>UIView addSubview:</code> method.</p>
  
  <p>I have managed to write a <code>UIAlertView</code> in the past that has a <code>UITextField</code> within it working correctly.</p>
  
  <p>Any help or suggestions would be much appreciated - thanks!</p>