Hi. I'm developing iphone app with UITabBarController as main view. Every ViewController in each tab is UINavigationController which must have a same button in leftBarButtonItem. Can I inherit some class from UINavigationController and override it's -(id) initWithRootViewController:(UIViewController *)rootViewController method to realize this ?

I made something like this. But this code doesn't work;

@implementation MainNavagaionController 

-(id) initWithRootViewController:(UIViewController *)rootViewController {

if (self = [super initWithRootViewController:rootViewController]) {

// Set user name title UIBarButtonItem * userNameButton = [[UIBarButtonItem alloc]initWithTitle:@"Title" style:UIBarButtonItemStylePlain target:self action:nil];
self.navigationItem.leftBarButtonItem = userNameButton; [userNameButton release];

}

return self; }

@end