UItabbar item not showing storyboard reference

问题:

I'm trying to use the new storyboard references in a tabbar. When I use the storyboard reference, the UITabBarItem (with customized image & text set), isn't showing anything. See setup: storyboard setup

tabbaritem setup

I fixed it for now by setting the images & title in the initWithCoder function for the initial viewcontroller in the referenced storyboards like so:

static NSString *const ContactsViewControllerTabContactImageName = @"tab-contact";
static NSString *const ContactsViewControllerTabContactActiveImageName = @"tab-contact-active";

- (instancetype)initWithCoder:(NSCoder *)aDecoder {
    self = [super initWithCoder:aDecoder];
    if (self) {
        self.title = NSLocalizedString(@"Contacts", nil);
        self.tabBarItem.image = [UIImage imageNamed:ContactsViewControllerTabContactImageName];
        self.tabBarItem.selectedImage = [UIImage imageNamed:ContactsViewControllerTabContactActiveImageName];
    }
    return self;
}

回答1:

You need to add the tab bar item in the destination storyboard view controller.

回答2:

This answer is pretty late, but I had an similar problem. This may be helpful for others who find this post later.

When using a UISplitViewController there is an issue for me adding the item in storyboard which can be solved with a workaround.

Scenario:

UITabBarController -> StoryboardReference -> UISplitViewController

Problem:

You can't add an UITabBarItem to the UISplitViewController

Solution / Workaround:

Add an UITabBarController within the UISplitViewControllers storyboard and assign the UISplitViewController as one of the tabs.An UITabBarItem will be added to the UISplitViewController. You can delete the unnecessary UITabBarController. The UITabBarItem will be kept.

回答3:

Refer following links

1. How to change the tab bar image color for selected and unselected

2. Tab bar item not showing

回答4:

you can get storyboard reference like this

UIStoryboard *mainStoryboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle: nil];