UINavigationController：最简单的例子 [英] UINavigationController: Simplest Example

问题描述

我正在尝试做一个非常简单的UINavigationController示例。这是我的代码：

I'm trying to do very simple example of a UINavigationController. Here is my code:

- (void)viewDidLoad {
  [super viewDidLoad];

下一行有效，或至少不会爆炸。

This next line works, or at least doesn't blow up.

  navController = [[UINavigationController alloc] initWithRootViewController:self];
  self.title = @"blah";

  PageOneController *one = [[[PageOneController alloc]init] autorelease];

示例1.此行没有

  [navController pushViewController:one animated:NO];

示例2.此行工作（但当然没有导航控制器）

Example 2. THIS LINE WORKS (but no nav controller, of course)

  [self.view addSubview:one.view];
}

为什么我无法将ViewController实例推送到navController并查看屏幕更改？

注意：我意识到我的概念可能会倒退而且我不需要我的查看引用 UINavigationController ...或其他东西。

Note: I realize that I might have my concepts backwards and I don't need to have my view referencing a UINavigationController... or something.

推荐答案

- (void)viewDidLoad {
    [super viewDidLoad];

    PageOneController *one = [[[PageOneController alloc]init] autorelease];
    one.title = @"blah";
    navController = [[UINavigationController alloc] initWithRootViewController:one];
    [self.view addSubview:navController.view];
}

它背后的基本思想是导航控制器的根视图控制器是控制器哪个视图将首先显示在导航控制器层次结构中。根控制器不是您将导航控制器插入的视图控制器。希望这会有所帮助。

The basic idea behind it is that a navigation controller's root view controller is the controller which view will be displayed first in the navigation controller hierarchy. The root controller is not the view controller that you plug the navigation controller into. Hope this helps.

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