title: UITapGestureRecognizer tap on self.view but ignore subviews
body: <p>I need to implement a feature that will invoke some code when I double tap on the self.view (view of <code>UIViewController</code>). But the problem that I have other UI object on this view and I don't want to attach any recognizer object to all of them. I found this method below how to make gesture on my view and I know how it works. Right now I am in front of handicap which way to choose for create this recognizer ignoring subview. Any ideas? Thanks.</p>
  <pre><code>UITapGestureRecognizer *doubleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleDoubleTap:)];
  [doubleTap setNumberOfTapsRequired:2];
  [self.view addGestureRecognizer:doubleTap];
  </code></pre>