ios5.1 - ipad で rightBarButtonItem を表示できません

Question

これは私のコードです:

UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:vc];
UIBarButtonItem *anotherButton = [[UIBarButtonItem alloc] initWithTitle:@"RETURN" style:UIBarButtonItemStylePlain target:self action:@selector(refreshPropertyList:)];
navigationController.navigationItem.rightBarButtonItem = anotherButton;
[anotherButton release];       
[IpadAppDelegate.stackController presentModalViewController:navigationController animated:YES];

Answer 1

私はその理由を見つけます：

変更が必要navigationController.navigationItem.rightBarButtonItem = anotherButton;

に：self.navigationItem.rightBarButtonItem = anotherButton;