Question

I have a project based on Xcode’s NavigationController template. This template has a navigationController and a RootViewController.

From inside this RootViewController I push a view and this view pushes a third view. Something like:

NavigationController >> RootViewController >> ViewController 1 >> ViewController 2

Now, from ViewController2 I want to access the navigationController and the navigationController.toolbar.

I know that every viewController has the navigationController property but my question do I have to do something when I push a new viewController so this variable (on the view that is being pushed) will have a valid reference to the correct ViewController or all pushed views will always have a valid reference to the navigationController?

The reason for my question is that I am trying to access the navigationController.toolbar, to make it invisible, and I am having no result.

thanks.

Answer 1

You might want to try -[UINavigationController setToolbarHidden:animated:] to hide the toolbar instead:

[self.navigationController setToolbarHidden:YES animated:YES];

This has always worked for me no matter how deep in the navigation stack my view controller was.

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In the entire navigation stack of one UINavigationController object, every view controller’s navigationController property has the same value.