Question

I’m doing the CS193P Stanford course tutorials and also some Apple iOS dev tutorials, and there’s a difference between how they push the ViewController to the screen

Apple does this:

 UINavigationController *aNavigationController = [[UINavigationController alloc] initWithRootViewController:rootViewController];

    self.navigationController = aNavigationController;

Stanford suggests doing this:

navigationController = [[UINavigationController alloc] init];
[self.navigationController pushViewController:rootViewController animated:NO];

How are they different?

PS: btw, Apple’s method work and the Stanford one doesn’t display anything and I don’t know why.

Answer 1

I think that using the pushViewController:animated method you are going to add the controller at the top of the stack of the controllers (push a new view controller on the stack).

In the second method you are not initializing the navigationController.