title: UISearchBar : How to prevent Cancel Button from clearing text?
body: <p>I have a screen with an <code>UISearchBar</code> within my app. It might be that there is already text in the searchbar, when the user enters the screen. <strong>If the user then taps into the field and then taps cancel, the content of the searchbar should not be cleared.</strong></p>
  
  <p>Is this achievable? I tried to implement <code>searchBarCancelButtonClicked</code>, but my modifications to the text property were ignored and the text field was still cleared.</p>