iOS使用UINavigationController滑出菜单(iOS Slide out menu with UINavigationController)

 我正在尝试编写一个使用主视图控制器（VC）和三个子视图的滑出菜单。 如果我想要的话，我希望子视图能够成为UINavigationControllers ...但是我将它们添加为主VC的子项时遇到了麻烦。 
 
 主视图是中心视图的代表。 
 
 似乎正在发生的事情是导航栏被赋予主vc而不是由孩子保留（如果这有意义）。 见图： 
 
 
 我最近下载了另一个产生所需效果的库（CHSliderMenu），它在iOS6 / 7中运行得很好，但是我无法区分作者正在做什么和我正在做什么之间的区别。 我知道我很接近，这就是让人难以理解的原因:( 
 
 以下是我的MainViewController中尝试添加子nav控制器的代码： 
 
self.view.frame = self.view.bounds;

_centerViewController = [[D2CenterViewController alloc] init];
_centerViewController.view.backgroundColor = [UIColor whiteColor];
_centerViewController.view.tag = CENTER_TAG;
_centerViewController.delegate = self;

UINavigationController *centerNavController = [[UINavigationController alloc] initWithRootViewController:_centerViewController];

[self addChildViewController:centerNavController];
[self.view addSubview:centerNavController.view];
 
 你能看出我可能出错的地方吗？ 诊断需要更多代码吗？ 

I'm trying to write a slide out menu that uses a main viewcontroller(VC) and three subviews. I want the subviews to be able to be UINavigationControllers if I want...but I'm having trouble adding them as children of the main VC.
 
The main view is the delegate of the center view.
 
What seems to be happening is that the nav bar is being given to the main vc and not retained by the child (if that makes any sense). See Image:
 
 
I've recently downloaded another library that yields the desired effect (CHSliderMenu) and it works just fine in iOS6/7, but I'm unable to distinguish the difference between what the author is doing and what I'm doing. I know I'm close, which is what's making this so hard to figure out :(
 
Here is the code in my MainViewController that attempts to add the child nav controller:
 
self.view.frame = self.view.bounds;

_centerViewController = [[D2CenterViewController alloc] init];
_centerViewController.view.backgroundColor = [UIColor whiteColor];
_centerViewController.view.tag = CENTER_TAG;
_centerViewController.delegate = self;

UINavigationController *centerNavController = [[UINavigationController alloc] initWithRootViewController:_centerViewController];

[self addChildViewController:centerNavController];
[self.view addSubview:centerNavController.view];
 
Can you see where I may have gone wrong? Is more code needed to diagnose?

原文：https://stackoverflow.com/questions/17160393