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copied!<p>Had issues with answers 2-4 in iOS 4 (from AnswerBot's answer), and needed a way to load the UINavigationController programmatically (though the NIB method worked)... So I did this:</p> <p>Created a Blank XIB file (don't set file owner), add a UINavigationController (give it your custom UINavigationController's class), change the UINavigationBar to your custom class (here it's CustomNavigationBar), then create the following custom class header (CustomNavigationController.h in this case):</p> <pre><code>#import <UIKit/UIKit.h> @interface CustomNavigationController : UINavigationController + (CustomNavigationController *)navigationController; + (CustomNavigationController *)navigationControllerWithRootViewController:(UIViewController *)rootViewController; @end </code></pre> <p>and custom implementation (CustomNavigationController.mm)</p> <pre><code>#import "CustomNavigationController.h" @interface CustomNavigationController () @end @implementation CustomNavigationController + (CustomNavigationController *)navigationController { NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"CustomNavigationController" owner:self options:nil]; CustomNavigationController *controller = (CustomNavigationController *)[nib objectAtIndex:0]; return controller; } + (CustomNavigationController *)navigationControllerWithRootViewController:(UIViewController *)rootViewController { CustomNavigationController *controller = [CustomNavigationController navigationController]; [controller setViewControllers:[NSArray arrayWithObject:rootViewController]]; return controller; } - (id)init { self = [super init]; [self autorelease]; // We are ditching the one they allocated. Need to load from NIB. return [[CustomNavigationController navigationController] retain]; // Over-retain, this should be alloced } - (id)initWithRootViewController:(UIViewController *)rootViewController { self = [super init]; [self autorelease]; return [[CustomNavigationController navigationControllerWithRootViewController:rootViewController] retain]; } @end </code></pre> <p>Then you can just init that class instead of a UINavigationController, and you'll have your custom navigation bar. If you want to do it in a xib, change the class of UINavigationController and UINavigationBar inside of your XIB.</p>

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