iphone - 如何从 Root View 返回上一个 View ？

Question

- (void)cancel {
// What should I do here?
}

// root view controller
- (void)viewDidLoad {
    [super viewDidLoad];

    UIBarButtonItem *cancelButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCancel target:self action:@selector(cancel)];
    self.navigationItem.leftBarButtonItem = cancelButton;
    [cancelButton release];     
}

我在导航栏中添加了取消按钮。
按下取消按钮时，我想从 Root View 返回上一个 View 。
取消时我需要做什么？我像这样添加了 Root View Controller 。

RootController *rootController = [[RootController alloc]initWithStyle:UITableViewStylePlain];               
UINavigationController *aNavigationController = [[UINavigationController alloc]initWithRootViewController:rootController];
self.naviController = aNavigationController;
[aNavigationController release];
[rootController release];
[self.view addSubview:[naviController view]];

Answer 1

您可以弹出 View 。

[self.navigationController popViewControllerAnimated:YES];

您也可以将其关闭。

dismissModalViewcontrollerAnimated

编辑:
如果要添加 View ，则需要删除 View 。

[self.view removeFromSuperView];