标签栏项目标题以编程方式未显示在目标 c 中

Question

I try create tab bar controller programatically, it works but I can not set title to ta bar items. I can not see title when I running my application. My code is here. Please help me, what is the problem?

- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.

myTabBarController = [[UITabBarController alloc] init];        
view2Controller = [[testView alloc] init];   
view3Controller = [[testView2 alloc] init];   
view4Controller = [[testView3 alloc] init];   
view5Controller = [[testView4 alloc] init];   
view6Controller = [[testView5 alloc] init];   


myTabBarController.viewControllers = [NSArray arrayWithObjects: view2Controller, view3Controller,view4Controller,view5Controller,view6Controller,nil]; 
 UITabBarItem *tabItem = [[[myTabBarController tabBar] items] objectAtIndex:1];
 [tabItem setTitle:@"theTitle"];

[self.view addSubview:myTabBarController.view];    
myTabBarController.selectedIndex=0;

}

Answer 1

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {

        // self.title = @"My Title";
    }

    self.title = @"My Title";
    return self;
}

Use above code in every subviews of tabbar controllers.

This may be help.

Answer 2

use this code

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        self.title=@"FREE BOOKS";
        self.tabBarItem.image = [UIImage imageNamed:@"first"];
    }
    return self;
}

Answer 3

在侧视图控制器的 viewwillappear/disappear 中设置你的 viewcontroller 的标题，它将显示在你的 tabbaritem 中。

Answer 4

You can set the title of UIViewController , which reflects when it is pushed in UINavigationController or a UITabBarController . But you should set the title before putting it inside any of them.

init is generally a good place to set the title.

- (id)init {
    // ... other code including check for self
    self.title = @"My Title";
    return self;
}

Answer 5

override func viewDidLoad() {
    super.viewDidLoad()

    DispatchQueue.main.async {
        self.tabBar.items?[0].title = "Title"
    }

}

OR

override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)

    self.tabBar.items?[0].title = "Title"

}

Answer 6

Here is the tutorial from the scratch which should help you to achieve the exact functionality you want to achieve. Download the source code and run it directly and if title are correct the you can follow the tutorial to get the proper understanding of the flow of UITabBarController.