以编程方式设置自定义 UITabBarItem？

发布于 2024-09-26 20:09:04 字数 726 浏览 0 评论 0原文

在 iOS 中，TabBarController 中的 TabBar 属性是只读的。如何将自定义项目与特定视图控制器关联？如何访问 tabBar 内的 UITabBarItems？

像这样

CustomView *custom = [[CustomView alloc] init];
UITabBarItem *customTab = [[UITabBarItem alloc] initWithTitle:@"Custom" image:[UIImage imageNamed:@"custom.png"] tag:0];
SecondView *second = [[SecondView alloc] init];
UITabBarItem *secondTab = [[UITabBarItem alloc] initWithTitle:@"Next" image:[UIImage imageNamed:@"next.png"] tag:1];
NSArray *views = [NSArray arrayWithObjects:custom,second,nil];
[tabBarController setViewControllers:views];
//how do I set the individual TabBarItems (customTab,secondTab) to be associated
//with the views in question?  tabBarController.tabBar is read only

原文

In iOS, the TabBar property in the TabBarController is read only. How can I associate a custom item with a particular view controller? How do I access the UITabBarItems inside the tabBar?

Like this

CustomView *custom = [[CustomView alloc] init];
UITabBarItem *customTab = [[UITabBarItem alloc] initWithTitle:@"Custom" image:[UIImage imageNamed:@"custom.png"] tag:0];
SecondView *second = [[SecondView alloc] init];
UITabBarItem *secondTab = [[UITabBarItem alloc] initWithTitle:@"Next" image:[UIImage imageNamed:@"next.png"] tag:1];
NSArray *views = [NSArray arrayWithObjects:custom,second,nil];
[tabBarController setViewControllers:views];
//how do I set the individual TabBarItems (customTab,secondTab) to be associated
//with the views in question?  tabBarController.tabBar is read only

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抠脚大汉 2024-10-03 20:09:04

在每个视图控制器内，您可以设置 tabBarItem 属性。如果视图控制器由 UITabBarViewController 拥有，则选项卡栏上的关联项目将相应更新。

显然，您不限

-(void)viewDidLoad {
    [super viewDidLoad];
    UITabBarItem *tbi = [[UITabBarItem alloc] initWithTitle:yourTitle image:yourIcon tag:yourTag];
    [self setTabBarItem:tbi]
    [tbi release];
}

于在 viewDidLoad 方法中执行此操作。

Inside each view controller, you can set a tabBarItem property. If the view controller is owned by a UITabBarViewController the associated item on the tab bar will be updated accordingly.

Something like this

-(void)viewDidLoad {
    [super viewDidLoad];
    UITabBarItem *tbi = [[UITabBarItem alloc] initWithTitle:yourTitle image:yourIcon tag:yourTag];
    [self setTabBarItem:tbi]
    [tbi release];
}

You are not restricted to perform this operation in the viewDidLoad method, obviously.

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