将两个导航控制器添加到一个选项卡栏项目

我希望将 2 个导航控制器附加到一个选项卡栏项目。

基本上，这个想法是在单个选项卡项上有 2 个视图，并且应该有一个导航栏来推动和弹出屏幕。 （与 iPad 中的设置应用程序相同）。

已编辑======

看起来左侧有一个带有自己的导航控制器的视图，而右侧有另一个带有自己的导航控制器（或其他一些 UI）的视图来实现 Push Pop 功能。

我知道如何将 1 个导航控制器附加到一个选项卡栏项目。

针对 ModalView 问题进行了编辑:- 通过实施 conmulligan 代码，一切都可以正常工作。但是，如果我尝试在 lansdscape 模式下显示某些 ModalViewController，并且当我尝试关闭此 ModalView 时，FirstViewController 导航栏将变为纵向（及其视图），而 SecondViewController 导航栏仍保持横向（应该是）。这种情况仅发生在设备中，而不是模拟器中。

下面是我展示 ModalViewController 的代码。

ModalTableViewController *modalTableViewController = [[ModalTableViewController alloc]initWithNibName:@"ModalTableViewController" bundle:[NSBundle mainBundle]]; 
UINavigationController *localNavigationViewController = [[UINavigationController alloc] initWithRootViewController:modalTableViewController];
localNavigationViewController.modalPresentationStyle = UIModalPresentationFormSheet;
[self presentModalViewController:localNavigationViewController animated:YES];
[modalTableViewController release];
[localNavigationViewController release];

为了关闭 ModalViewCntroller 我这样做：-

[self dismissModalViewControllerAnimated:YES]; 

Waiting for your replies.

一种方法是创建一个UIViewController包含两个导航控制器的子类并将其添加到UITabBarController。以下是您在中创建和布局导航控制器的方法UIViewController's -viewDidLoad method:

FirstViewController *firstViewController = [[FirstViewController alloc] init];
UINavigationController *firstNavigationController = [[UINavigationController alloc] initWithRootViewController:firstViewController];
[firstViewController release];

SecondViewController *secondViewController = [[SecondViewController alloc] init];
UINavigationController *secondNavigationController = [[UINavigationController alloc] initWithRootViewController:secondViewController];
[secondViewController release];

firstNavigationController.view.frame = CGRectMake(0.f, 0.f, 320.f, self.view.frame.size.height);
firstNavigationController.view.autoresizingMask = UIViewAutoresizingFlexibleHeight;

secondNavigationController.view.frame = CGRectMake(321.f, 0.f, self.view.frame.size.width - 321.f, self.view.frame.size.height);
secondNavigationController.view.autoresizingMask = UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth |
                                                   UIViewAutoresizingFlexibleRightMargin;

[self.view addSubview:firstNavigationController.view];
[self.view addSubview:secondNavigationController.view];

这或多或少是如何UISplitViewController在幕后工作。

Edit:您可能需要添加以下代码以确保其布局正确：

- (void)viewWillAppear:(BOOL)animated { 
    [super viewWillAppear:animated];
    [firstNavigationController viewWillAppear:animated];
    [secondNavigationController viewWillAppear:animated];
}

- (void)viewWillDisappear:(BOOL)animated { 
    [super viewWillDisappear:animated];
    [firstNavigationController viewWillDisappear:animated];
    [secondNavigationController viewWillDisappear:animated];
}

- (void)viewDidAppear:(BOOL)animated { 
    [super viewDidAppear:animated];
    [firstNavigationController viewDidAppear:animated];
    [secondNavigationController viewDidAppear:animated];
}

- (void)viewDidDisappear:(BOOL)animated { 
    [super viewDidDisappear:animated];
    [firstNavigationController viewDidDisappear:animated];
    [secondNavigationController viewDidDisappear:animated];
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
    return YES;
}