将UINavigationController添加到主视图以外的视图

Question

我想添加一个UINavigationController到我的应用程序信息视图（不是我的主视图）。我看过/阅读了很多教程，展示了如何使用IB通过AppDelegate将其添加到主窗口。在我的情况下，我只希望它出现在用户按下信息按钮并被带到infoView。这里是我我MainViewController内切换到InfoView的：

- (IBAction)infoButtonPress:(id)sender 
{ 
    // Create pointer to instance of InfoViewController 
    InfoViewController *infoView = [[InfoViewController alloc] initWithNibName:@"InfoViewController" bundle:nil]; 
    // Add view switching animation 
    infoView.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal; 
    // Change view using animation 
    [self presentModalViewController:infoView animated:YES];  
} 

此时将显示InfoView的，我想这是对的UINavigationController的RootView。我尝试添加该行：

UINavigationController *infoNavController = [[UINavigationController alloc] 
              initWithRootViewController:infoView]; 

创建InfoViewController的实例后，应用程序崩溃。是否有可能将UINavigationController添加到除主视图以外的视图？

谢谢。

Answer 1

您与您的实施非常接近。按此顺序尝试。

InfoViewController *infoView = [[InfoViewController alloc] initWithNibName:@"InfoViewController" bundle:nil]; 
UINavigationController *infoNavController = [[UINavigationController alloc] 
              initWithRootViewController:infoView]; 
[infoView release]; // skip this if using ARC 
infoView.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal; 
[self presentModalViewController:infoNavController animated:YES]; 

UPDATE

要杀死这个模式，你将有你的按钮添加到主模式的看法。

InfoViewController.m 

-(void)cancel:(id)sender { 
    [self dismissModalViewControllerAnimated:YES]; 
} 

-(void)viewDidLoad { 
    [super viewDidLoad]; 

    UIBarButtonItem *cancelButton = 
    [[UIBarButtonItem alloc] initWithTitle: @"Cancel" 
            style: UIBarButtonItemStylePlain 
            target: self 
            action: @selector(cancel:)]; 
    self.navigationItem.leftBarButtonItem = cancelButton; 
    [cancelButton release]; 
}