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The following code should work, right?
ViewController2 *childView = [[ViewController2 alloc] initWithNibName:@"ViewController2" bundle:nil];
[self.navigationController pushViewController:childView animated:YES];
[childView release];
It doesn’t do anything though. There are no error messages. The view just doesn’t get switched. viewDidLoad does not even execute inside ViewController2.
That code won’t do anything if the view controller presenting it doesn’t have a navigation controller, i.e. it isn’t in a navigation controller stack. In that case, you’ll be calling a method (
pushViewController:animated:) on a nil object (self.navigationController) which does nothing. Thus, you can only use this this method if the “parent” view controller is in aUINavigationControllerstack.