UITabBarController 仅显示其 UITabBar 的一半（屏幕外）

发布于 2024-11-15 20:57:31 字数 669 浏览 2 评论 0原文

当我从 UIViewController 呈现 UITabBarController 后，我的 UITabBar 没有完全显示。请你告诉我我做错了什么吗？

我的代码是：

//some method

LoggedInViewController *lvc = [[[LoggedInViewController alloc] initWithAccount:account] autorelease];
[self presentModalViewController:lvc animated:YES];

- (void)viewDidLoad

{
    self.tabController = [[UITabBarController alloc] init];
    LoggedInFeedNavigationController *navController = [[LoggedInFeedNavigationController alloc] initWithAccount:self.account];
    [self.tabController setViewControllers:[NSArray arrayWithObject:navController]];
    [self.view addSubview:self.tabController.view];
    [super viewDidLoad];
}

原文

My UITabBar is not completely showing after I present a UITabBarController from a UIViewController. Please can you tell me what I am doing wrong?

My code is:

//some method

LoggedInViewController *lvc = [[[LoggedInViewController alloc] initWithAccount:account] autorelease];
[self presentModalViewController:lvc animated:YES];

- (void)viewDidLoad

{
    self.tabController = [[UITabBarController alloc] init];
    LoggedInFeedNavigationController *navController = [[LoggedInFeedNavigationController alloc] initWithAccount:self.account];
    [self.tabController setViewControllers:[NSArray arrayWithObject:navController]];
    [self.view addSubview:self.tabController.view];
    [super viewDidLoad];
}

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我不在是我 2024-11-22 20:57:31

这不是一个好的做法：

[viewController1.view addSubview:viewController2.view];

MVC 设计的要点丢失了。视图控制器应该（从模型）获取数据并将其放入视图中。如果您有多个视图，只需安排视图的功能以接受相应的数据。

因此，如果您需要标签栏控制器，您应该执行以下操作：

// assuming you are in the same initial controller
UITabBarController* pTabBarControllerL = [[UITabBarController alloc] init];
MyFirstController* pFirstControllerL = [[MyFirstController alloc] init];
[pTabBarControllerL setViewControllers:[NSArray arrayWithObject:pFirstControllerL]];
// perhaps set more tab bar controller properties - button images and so on
[self presentModalViewController:pTabBarControllerL animated:YES];
// release the memory you do not need

-(void)viewDidLoad {
    // do your work in pFirstControllerL
}

PS：您不应该子类化 UINavigationController 和 UITabBarController。

It's not a good practice to do:

[viewController1.view addSubview:viewController2.view];

The point of the MVC design is lost. The view controller should get your data (from the model) and put it in the view. If you have more than one view just arrange the functionality of the views to accept the corresponding data.

So if you need a tab bar controller you should do the following:

// assuming you are in the same initial controller
UITabBarController* pTabBarControllerL = [[UITabBarController alloc] init];
MyFirstController* pFirstControllerL = [[MyFirstController alloc] init];
[pTabBarControllerL setViewControllers:[NSArray arrayWithObject:pFirstControllerL]];
// perhaps set more tab bar controller properties - button images and so on
[self presentModalViewController:pTabBarControllerL animated:YES];
// release the memory you do not need

-(void)viewDidLoad {
    // do your work in pFirstControllerL
}

PS: You should not subclass UINavigationController and UITabBarController.

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