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I have a viewController that presents a modalViewController when a UINavigationBarItem is touched. After the user is done with the modal view, the modalViewController is dismissed. At this point I want to change/remove the NavigationBarItem — how would I accomplish this?
I was thinking of using viewWillAppear: but I only want the change to happen when the modalViewController is dismissed.
One way is to use NSNotificationCenter.
Before presenting the modal view, call addObserver to prepare to be notified.
At the place where the modal view is dismissed, post a notification using postNotificationName.
The notification will call a method you specify in addObserver.
In this method, put your “modal view dismissed” logic.