How to add an UINavigationController to an UIViewController presented as Modal

Question

I have an alternative flow in my app. This flow starts in my firstViewController, then in this view a call my secondViewController like this:

- (IBAction)PressButton:(id)sender {

    SecondViewController *second = [[SecondViewController alloc] init];
    second.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
    UINavigationController *nav = self.navigationController;
    [nav presentViewController:second animated:YES completion:nil];                              
}

In my secondViewController I want to push my thirdViewController. But it is not working I tried this ways:

- (IBAction)pressButton:(id)sender {

   ThirdViewController *tvc = [[ThirdViewController alloc] init];
   UINavigationController *nav = self.navigationController;
   [nav pushViewController:tvc animated:YES];

}

When I press the button of secondViewController nothing happens.

What I'm doing wrong ?

I'm using:

• OSX 10.8.2
• Xcode 4.6
• iOS 6.1

Answer 1

You must present the navigation controller modally, and have the second view as the root of that navigation controller. As well as calling presentViewController from the owning view not its parent navigation controller.

- (IBAction)PressButton:(id)sender {
        SecondViewController *second = [[SecondViewController alloc] init];
        second.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
        UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:second];
        [self presentViewController:navigationController animated:YES completion:nil];    
    }