Wizard style navigation, dismissing a view and showing another one

Question

I'm making a set of screens similar to a wizard and I'd like to know how to make a view dismiss itself and its parent view and immediately show a 'DoneScreen' without worrying about resource leaks. My views look like the following:

Base -> Level1 -> DoneScreen
               -> Level2 -> DoneScreen

The Level1 controller is a navigation controller created with a view.xib and shown with

[self presentModalViewController ...]

by the Base controller. The Level1 controller is also responsible for creating the 'DoneScreen' which may be shown instead of the Level2 Screen based on a certain criteria.

When the user taps a button on the screen, the Level1 controller instantiates the the Level2 controller and it displays it via

[self.navigationController pushViewController ..]

and Level2 controller's view has a 'Next' button.

When the use hits the 'Next' button in the Level2 screen, I need to dismiss the current Level2's view as well as the Level1's view and display the 'DoneScreen', which would have been created and passed in to the Level2 controller from Level1. (partly to reduce code duplication, and partly to separate responsibilities among the controllers) In the Level2 controller, if I show the 'DoneScreen' first and dismiss itself with

[self.navigationController popViewControllerAnimated:YES];

then the Level1 controller's modal view is still present above the 'Base' but under the Done screen. What's a good way to clear out all of these views except the Base and then show the 'DoneScreen'?

Any good suggestions on how to get this done in a simple but elegant manner?

Answer 1

A google search for "iphone wizard tutorial" only yielded one good result. It looks like it might be a better idea for now to make one long view containing all your wizard screen widgets.

Answer 2

You could consider grabbing the views you want in the stack, making a new array then using the navigation controllers "viewControllers" property to swap them all out at once.

Answer 3

Alas, my depth of knowledge (or lack of) has led me to go to the single screen with everything on it route, using multiple views depending on the state. Not ideal and a bit messier but it works. Thanks all for your help.