uitabbaritem

问题 How can I change inactive icon/text color on iOS 7 tab bar? The one in gray color. 回答1: In every first ViewController for each TabBar: - (void)viewDidLoad { [super viewDidLoad]; // changing the unselected image color, you should change the selected image // color if you want them to be different self.tabBarItem.selectedImage = [[UIImage imageNamed:@"yourImage_selectedImage"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]; self.tabBarItem.image = [[UIImage imageNamed:@"yourImage

问题 I have created a storyboard with UITabbarController as initial rootViewController and added 6 items in tab bar Till here it is fine. now i need to manage tab bar items on following conditions : if user not logged in - remove 6th item if user logged in - remove 5th item I am able remove tab item in didFinishLaunchingWithOptions in AppDelegate by following code - (BOOL)application : (UIApplication *)application didFinishLaunchingWithOptions : (NSDictionary *)launchOptions { NSString

问题 I'd like to be able to change the highlighted state image on an UITabBarItem when it is selected? Is it possible to subclass and access this? or do I need to roll my own navigation code? -> start edit I didn't articulate what I was looking for earlier. I am looking for the semi-transparent white overlay reference that the device adds to the selected state/image of the UITabBar. See image! http://solomon71.com/images/UITabBarItem.png 回答1: There is no documented or supported way to set your own

问题 I have an item in my tab bar that shouldn't be enabled until certain conditions are met. I can disable that item in viewDidLoad() from my subclassed UITabBarController , but I'm having trouble creating a function that I can call when needed. Below is what I have so far - for reasons I don't understand, my tab bar item array is always nil! (Unless its initialized in viewDidLoad() where it works fine.) func setTabState(whichTab: Int) { let arrayOfTabBarItems = self.tabBar.items if let barItems

问题 In my app I should use a several Tab Bar Item with one Controller. To approach this in my Second and Third Tab Bar Item Controllers I use self.tabBarController?.selectedIndex = 0 . As you can see this solution generates blink effect... It's happens every time when I choose Third Tab Bar Item. How to get rid of this blink? Any help is greatly appreciated! 来源： https://stackoverflow.com/questions/39487531/how-to-get-rid-of-blink-between-switching-tab-bar-item

问题 Good day! I put a picture in a tab bar but it has wrong sizes. Help me solve the problem.I want to fill the entire Item. + (void)setupTabBarAppearance { [[UITabBar appearance] setBarTintColor:[UIColor colorWithRed:30.0f/255.0f green:201.0f/255.0f blue:224.0f/255.0f alpha:1]]; UIImage *image = [[self imageWithColor:[UIColor colorWithRed:255.0f/255.0f green:198.0f/255.0f blue:25.0f/255.0f alpha:1]] resizableImageWithCapInsets:UIEdgeInsetsMake(0, 0, 1, 2) resizingMode:UIImageResizingModeStretch]

问题 Try as I might, I cannot get this to work. Here is my latest attempt. Can someone clue me in as to why this does not work? In a method which is called by my view controller's init method: UIImage *image = [UIImage imageNamed: @"window22.png"]; UITabBarItem *item = [[UITabBarItem alloc] initWithTitle: @"Some Title" image: image tag: 0]; self.tabBarItem = item; All it does is put a big square where the image should be. The title in the tab bar remains the same as the view controller's title.

问题 I have a TabBar in my project and when user select item this item will disable but the color will change too! I want the color is same as other items color in TabBar I used item.isEnabled = false for disable item but this codes here won't work for this item override func viewWillAppear(_ animated: Bool) { super.viewWillAppear(animated) self.tabBar.barTintColor = UIColor.init(red: 126/255, green: 0/255, blue: 64/255, alpha: 1.0) if #available(iOS 10.0, *) { self.tabBar.unselectedItemTintColor

问题 I have a non consumable product to remove ads from my app, via in-app purchase. It works well sometimes, and if I close the app and open again, my code for detecting in NSDefaults if PRO version was purchased works fine. The things is, upon purchase, I want to remove the "upgrade to PRO" button from the tab bar and this code crashes the app. Here's the controller that handles in-app purchase: #import "RemoveAdsViewController.h" #import <StoreKit/StoreKit.h> #import "Flurry.h" #define

问题 I have a UITabBarItem without a title and only an image. I was wondering how I can change the image size so it can take up the whole UITabBarItem. I searched all over the internet but found nothing. I tried: UIStoryboard *storyBoard = [UIStoryboard storyboardWithName:@"Main_Storyboard" bundle:nil]; UITabBarController *tabBarController = [storyBoard instantiateViewControllerWithIdentifier:@"tab"]; UITabBar *tabBar = tabBarController.tabBar; UITabBarItem *tabBarItem1 = [tabBar.items