self.title 设置navigationController 和tabBarItem 的标题?为什么? [英] self.title sets navigationController and tabBarItem's title? Why?

问题描述

我在 UIViewController 中为我的一个标签执行此操作:

I do this in a UIViewController for one of my tabs:

self.title = @"Welcome";

但是，它会覆盖我对 tabBarItem 的所有内容.我试过了:

However, it's overwriting whatever I have for the tabBarItem. I have tried:

self.tabBarItem.title = @"Home";

和

[self.tabBarItem initWithTitle:@"Home" image:[UIImage imageNamed:@"iconHome.png"] tag:0];

但是，self.title 仍然会覆盖 tabBarItem，无论我是否在 设置标题之后尝试后两段代码.代码甚至可以正常运行，但是 self.tabBarItem.title 或 initWithTitle 什么也没做?

But still, self.title overwrites the tabBarItem, regardless of whether I am trying the two latter pieces of code after the title has been set. The code even runs without errors, but the self.tabBarItem.title or initWithTitle doesn't do anything?

推荐答案

好的，我想通了！这就是我正在做的事情:

OK, I figured it out! Here's what I am doing:

self.title = @"Title for TabBarItem"; // TabBarItem.title inherits the viewController's self.title
self.navigationItem.title = @"Title for NavigationBar";

navigationBar 将继承 self.title，除非另外使用 self.navigationItem.title

the navigationBar would inherit self.title, unless otherwise set using self.navigationItem.title

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