title: How to perform segue with no transition animation
body: <p>I have an application which starts with a navigation controller. This navigation controller can open modal view controller: </p>
  
  <pre><code>- (void)openModalController:(id)sender
  {
      [self performSegueWithIdentifier:@"SegueIdentifier"];
  }
  </code></pre>
  
  <p>But when the user opens an application using url scheme, I'd like to present the application with the modal controller opened. So I added some methods and tried:</p>
  
  <pre><code>// Controller
  
  - (void)viewDidAppear:(BOOL)animated
  {
      [super viewDidAppear:animated]; // animated == NO in initial loading 
  
      if (_shouldOpenModalController) {
          [self openModalController:nil];
      }
  }
  
  - (void)setShouldOpenModalController:(BOOL)flag
  {
      _shouldOpenModalController = flag;
  }
  
  // AppDelegate
  
  - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
  {
      if (launchOptions) {
          UINavigationController *nc = (UINavigationController *)self.window.rootViewController;
          MyViewController *c = (MyViewController *)[ns topViewController];
          [c setShouldOpenModalController];
      }
  }
  </code></pre>
  
  <p>But here is a problem: the <code>openModalController:</code> performs segue with transition animation I setup in storyboard. How can it be done with no animation? Is there another approach for this task? </p>