在 UITabBarController 上添加子视图 [英] AddSubView on UITabBarController

问题描述

我尝试在 UIViewController 上添加 UIView:

I try to add UIView on UIViewController:

AppDelegate *md = (AppDelegate*)[[UIApplication sharedApplication] delegate];

UIView *view = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 150, 44)];
[view setBackgroundColor:[UIColor yellowColor]];
[md.tab.view addSubview:view];

而且我注意到 UIView 不是从以下位置开始的:

And i noticed that the UIView not start from :

我在 MainWindow.Xib 上创建了 TabBarController

I create the TabBarController on The MainWindow.Xib

推荐答案

这是正确的行为，假设您将视图添加到 UITabBarViewController 的视图.一个标签栏控制器占据了整个屏幕——底部的标签，以及上面的标签内容.

That's correct behaviour, assuming you're adding your view to the UITabBarViewController's view. A tab bar controller takes up the entire screen - the tabs at the bottom, and the tab content above that.

听起来好像您想向标签栏而不是视图控制器添加视图.为此，您应该使用标签栏控制器的 tabBar 属性.

It sounds as if you want to add a view to the tab bar rather than the view controller. To do this you should use the tabBar property of your tab bar controller.

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