How to remove all the view along with rootView from UINavigationController in iPhone

Question

Hello all,

I have an UIView added in the main window with a controller. On clik of a button on this view I want to load a UINavigationController which will migrate to multiple views pushing them one by one on stack. Now what I want to do is when user reaches at the end of views, in the last view I have a done button. ON clik of this button I want to move back to my first screen unloading the NavigationController from the memory.

What is the best way to do it since popToRootViewController takes you to the first screen of UINavigationController which is my second screen.

Answer 1

You basically want to remove the navigation controllers view, so why cant you just say [navigationController.view removeFromSuperView] ?

Answer 2

One way to do this is to present the navigation controller as a modal view controller, and dismiss it when you're done:

// In the parent controller, when the navigation controller is about to appear:
UINavigationController* navController = [[UINavigationController alloc] init];
[self presentModalViewController:navController animated:YES];

// ... later, in the nav controller, when it's done being used:
[self.parentViewController dismissModalViewControllerAnimated:YES];
[self autorelease];  // goodbye, cruel world (when the ar pool is drained)

Answer 3

A few ideas, in order of desirability

1. make Controller #1 the root view controller of the stack and then use popToRootViewController. Is there a good reason why you aren't doing this already? Keep in mind you can easily hide the navigation bar from any controller, if that's what you're afraid of.

2. Add a method called "destroyNavigationStack" or something to main Controller #1 and have a reference to controller #1 in your app delegate. In your Nth view controller, when "done" is hit, get a reference to your app delegate (UIApplication's sharedApplication method), and send View Controller #1 this "destroy" message. There really is no reason to even think about popping view controllers off of the stack since you just want to get rid of the entire stack anyway.

3. Make ViewController #1 a singleton and call destroyNavigationStack