title: cancel UIAlertView programmatically
body: <p>How can I cancel a <code>UIAlertView</code> programmatically?
  This is the code that I use to show the UIAlertView</p>
  
  <pre><code>UIAlertView *myAlertView = [[UIAlertView alloc] initWithTitle:@"Save Background" message:@"Downloading..." delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:nil, nil];
      CGAffineTransform myTransform = CGAffineTransformMakeTranslation(0.0, 70.0);
      [myAlertView setTransform:myTransform];
      [myAlertView show];
  </code></pre>