How to add a navigation controller to a view-based application?

Question

Is it possible to add a UINavigationController to a view application that inherits from UIViewController and not UITableViewController? How is it done?

Solution

Yes, you can have Navigation controllers in any view based application, whether at the Root level (like when you create the Navigation-based template in Xcode) or with a TabBar root, or with any Root.

One example, presenting a modal view including navigation (used in my app to display a series of forms):

    UIViewController *control = [[MyViewController alloc] initWithNibName: @"MyViewController" bundle: nil];
    UINavigationController *navControl = [[UINavigationController alloc] initWithRootViewController: control];
    [self presentModalViewController: navControl animated: YES];
    [control release];

In another example, if you want to have it at the root level, but didn't create the application with the Navigation template, in the AppDelegate's didFinishLaunching(...):

    UINavigationController *navControl = [[UINavigationController alloc] initWithRootViewController: control];
    [window setRootViewController: navControl];
    [navControl release];

You can also set it in Interface Builder, by setting up the class of the View controller you use (UIViewController replaced by UINavigationController).

I hope this answers your question (sorry about the previous discussion).