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Editorial Team
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Asked: 2026-05-25T23:09:54+00:00

I’m reading Apple doc but I don’t understand what a root controller is. The

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I’m reading Apple doc but I don’t understand what a root controller is. The doc says that this is the controller at the bottom of the stack. Maybe, is this the controller that I’ve push the first time? Anyone can explain this concept?

From Apple doc UINavigationController, I’ve seen that there is a method called initWithRootViewController

Initializes and returns a newly
created navigation controller.
– (id)initWithRootViewController:(UIViewController
*)rootViewController

What does it mean? Then, is it possible to change the root view controller or not?

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1 Answer

  1. Editorial Team

    Remember that rootViewController isn’t a type of object, but a property name. It just happens to be the particular UIViewController instance at the bottom of the stack, as Nubbel said.

    Methods like initWithRootViewController are for situations when you want to initialize UINavigationController, and also tell it to “use this VC as the first VC in the heirarchy”.

    It seems like UINavigationController really doesn’t want you to change that property after it’s been created, but it looks like ppl have found ways to do it: – Remember to check the comments to see if this is an “approved” method of working.

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