title: Navigation bar doesn't show up
body: <p>I have this problem: i have a <strong>view controller</strong> (embedded in a navigation controller) that after doing an action triggers a <strong>manual segue pushing a new view controller</strong>, however in the new view controller there is no <strong>navigation bar</strong> because in the first controller i had implemented the viewWillDisappear method like this:</p>
  
  <h2>StartViewController</h2>
  
  <pre><code>- (void)viewWillDisappear:(BOOL)animated {
    // Hide the navigation bar just before the view disappear
    [[self navigationController] setNavigationBarHidden:YES animated:YES];
  }
  </code></pre>
  
  <p>Here is the code for the manual segue that's inside an <strong>IBAction</strong>:</p>
  
  <pre><code>[self performSegueWithIdentifier:@"tutorialSegue" sender:self];
  </code></pre>
  
  <h2>DestinationViewController</h2>
  
  <p>I'd tried like this</p>
  
  <pre><code>- (void)viewDidLoad
  {
      [super viewDidLoad];
  // Do any additional setup after loading the view.
      [[self navigationController] setNavigationBarHidden:NO animated:NO];
  }
  </code></pre>
  
  <p>but it doesn't work, actually in the debugger i noticed navigationcontroller is equal to <strong>nil</strong> and i just can't figured out why.</p>