title: Dismissing the keyboard with UISearchBar, without resigning first responder
body: <p>Hey, I was working on a navigation-based app on iPhone similar to the contacts app.  When you input something in the search bar, and scroll in the table (in the contacts app), the keyboard goes away.  I don't think it resigns first responder though, because when I try and do that in -(void)scrollViewDidScroll:(UIScrollView *)scrollView, it disables the cancel button, which does not happen in the contacts app.  Basically my question is how do I dismiss the keyboard without disabling the cancel button, like in the contacts app?</p>
  
  <p>Thanks</p>