UINavigationController如何设置标题 [英] UINavigationController how to set title

问题描述

我有一个通用的项目列表的Controller / View，可以扩展用于显示自定义列表..列表和导航工作正常..但我无法更改UINavigationController的标题。
在通用控制器中：

I have a Controller/View for a generic list of items, that can be extended for displaying a custom list.. Listing and navigation works fine.. but I can't change the title of UINavigationController. In the generic Controller:

- (void)viewDidLoad
{
    [super viewDidLoad];
    [self.view addSubview: navigationController.view];
}
- (void)setNavigationTitle: (NSString *)title
{
    NSLog(@"set title: %@", title); // this works
    self.navigationController.title = title; // Nothing works here
}

然后，扩展类会这样做..

Then, the extended class does..

- (void)viewDidLoad
{
    [super viewDidLoad];
    [self setNavigationTitle: @"Custom list"];
}

navigationBar仍有Item作为标题：（

The navigationBar still have "Item" as title :(

推荐答案

在 UIViewController 中有一个标题属性，它是由 NavigationController 显示的属性。所以当推送一个新的 UIViewController 时导航堆栈将 UIViewController 的标题设置为适当的值。

In your UIViewController there is a title property and it is that property that will be displayed by the NavigationController. So when pushing a new UIViewController onto the navigation stack set the title of that UIViewController to whatever is appropriate.

在你的情况下它看起来会像be：

In your case it looks like it would be:

[self setTitle:@"WhateverTitle"];

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