Tab Bar Item title before appear Storyboard

问题

my app starts with a tab bar controller which have 5 tabs. At start the first one in presented with its name but the other four don't have a name until I click on them. Then the name appears depending which language the user has. How can I set the name of the tabs before the tab bar appears? I am using storyboard. Is there a way to set title at the tab bar programmatically when all the rest is done with storyboard? I tried in the AppDelegate something like [FirstViewController setTitle:NSLocalizedString(@"Titel1", nil)]; But I got an error that there is no class method for selector setTitle. Thanks.

回答1:

I had the same problem today. I'm using storyboard too. In my case i used the following way.

I've created a new "Objective-C class" with the name "MainTabBarViewController" as a subclass of "UITabBarController".
In my storyboard in "identity inspector" i changed "Custom class" to "MainTabBarViewController".
In the method "viewDidLoad" in "MainTabBarViewController" i added:

[[self.viewControllers objectAtIndex:0] setTitle:NSLocalizedString(@"home", nil)];

[[self.viewControllers objectAtIndex:1] setTitle:NSLocalizedString(@"statistics", nil)];

[[self.viewControllers objectAtIndex:2] setTitle:NSLocalizedString(@"settings", nil)];

[[self.viewControllers objectAtIndex:3] setTitle:NSLocalizedString(@"info", nil)];

I guess it is not the perferct way, but for me it works perfect.

回答2:

I had a configuration with two tabs like this:

MainTabBarController : UITabBarController
    +- MessagesNavigationController : UINavigationController
    +- ContactsNavigationController : UINavigationController

In a configuration with Storyboard and ARC I overrode the initWithCoder: selector in the custom classes of my UITabBarController view controllers (in this case ContactsNavigationController) and initialized the tabBarItem.title there like this:

@implementation ContactsNavigationController

...

- (id)initWithCoder:(NSCoder *)decoder
{
    self = [super initWithCoder:decoder];
    if (self) {
        self.tabBarItem.title = NSLocalizedString(@"Contacts", nil);
    }
    return self;
}

When using storyboards the iOS calls (id)initWithCoder: instead of -(id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil when the storyboard view controller is initialized during UITabBarController launch. Also note that viewDidLoad doesn't get called until the view controller tab is selected from the tab bar.

回答3:

In the app delegate, where you are creating the view controllers, set the title property here (rather than in viewDidLoad), for example:

vc1 = [[VC1 alloc] init];
vc1.title = @"List";

vc2 = [[VC2 alloc] init];
vc2.title = @"Map";

tabBarController.viewControllers = [[NSArray alloc] initWithObjects:vc1, vc2, nil];

回答4:

If you take a look at the FirstViewController created by Xcode using the template Tab-Bar application based in the - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil method you can see something like this:

if (self) {  
    //check your language
    self.title = NSLocalizedString(@"First", @"First");
    self.tabBarItem.image = [UIImage imageNamed:@"first"];  
}

So you have to check for your language and then set the title property, this will set the title on the tab bar and in the navigation bar.

回答5:

Try this, in every view u have to use this method

Suppose this is you first view

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

    if (self) {
        self.title = NSLocalizedString(@"homepage", @"homepage");
        [self.tabBarItem setTag:0];
        self.tabBarItem.image = [UIImage imageNamed:@"homepage"];
    }
    return self;
}

In you app delegate class write this code to add UITabBarController

self.tabBarController = [[[UITabBarController alloc] init] autorelease];
self.tabBarController.viewControllers = [NSArray arrayWithObjects:viewController1, viewController2,viewController3,viewController4,viewController5, nil];
self.window.rootViewController = self.tabBarController;
[self.window makeKeyAndVisible];

Add above code in

-(BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {}

来源：https://stackoverflow.com/questions/10088857/tab-bar-item-title-before-appear-storyboard

标签

iphone

uitabbarcontroller

storyboard