无法显示在iPad上

Question

rightBarButtonItem这是我的代码：

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

我找出原因：

需要改变navigationController.navigationItem.rightBarButtonItem = anotherButton;

到：self.navigationItem.rightBarButtonItem = anotherButton;