title: Objective-C : present view controller from App Delegate above everything
body: <p>I want to present a view controller from the app delegate that appears above everything, including any modal views open. </p>
  
  <p>I'd be doing this when a push notification arrives.</p>
  
  <pre><code>test *fixtureViewController = [[test alloc] init];
  
  [self.window.rootViewController presentViewController:testViewController animated:YES completion:nil];
  </code></pre>
  
  <p>But this doesn't work if there is a modal view active from another view controller.</p>
  
  <p>Any ideas?</p>