Present a modal UINavigationController

in my app delegate I do this:

navigationController = [[[UINavigationController alloc] initWithRootViewController:homePageController] autorelease];
[tabBarController presentModalViewController:navigationController animated:YES];

for present a modal UINavigationController. But in the homePageController how can I push other views in that navigation controller?

Should I call in the homePageController's methods this?

MyDelegate *delegate = (MyDelegate *) [[UIApplication sharedApplication] 开发者_StackOverflowdelegate];
[delegate.navigationController pushViewController:newView animation:YES];

or should I use another way?

You can access the parent navigation controller of any UIViewController through the navigationController property. So, in your HomePageController methods:

[self.navigationController pushViewController:someViewController animated:YES];