Setting the color of the text and font UITabBarItem, causing a strange result in fast

Question

I am trying to change my text UITabBarItemsand have used questions like this . The second answer is great for me if I don't try to customize the font UITabBarItem. This fragment displays the expected results of the selected white text, and the unselected element is light gray:

UITabBarItem.appearance().setTitleTextAttributes([NSForegroundColorAttributeName: UIColor.blackColor()], forState:.Normal)

UITabBarItem.appearance().setTitleTextAttributes([NSForegroundColorAttributeName: UIColor.whiteColor()], forState:.Selected)

However, if this is added:

UITabBarItem.appearance().setTitleTextAttributes([NSFontAttributeName:UIFont(name: "American Typewriter", size: 13)!], forState: .Selected)

For some reason, the text turns black when it is selected and not selected, and the font remains unchanged.

Oddly enough, if I changed .Selectedto .Normalin the last fragment, then the selected text will turn white and the text will be executed in accordance with the font in the code.

UITabBarItem.appearance().setTitleTextAttributes([NSFontAttributeName:UIFont(name: "American Typewriter", size: 13)!], forState: .Normal)

, . , - , - , .

dfri, :

UITabBarItem.appearance().setTitleTextAttributes([NSForegroundColorAttributeName: UIColor.blackColor(),
        NSFontAttributeName : [NSFontAttributeName:UIFont(name: "American Typewriter", size: 13)!]], forState:.Selected)

UITabBarItem.appearance().setTitleTextAttributes([NSForegroundColorAttributeName : UIColor.whiteColor(),
        NSFontAttributeName : [NSFontAttributeName:UIFont(name: "American Typewriter", size: 13)!]], forState:.Normal)

. :

, 0x7fa6d9461ef0

Answer 1

let colorNormal : UIColor = UIColor.blackColor()
let colorSelected : UIColor = UIColor.whiteColor()
let titleFontAll : UIFont = UIFont(name: "American Typewriter", size: 13.0)!

let attributesNormal = [
    NSForegroundColorAttributeName : colorNormal,
    NSFontAttributeName : titleFontAll
]

let attributesSelected = [
    NSForegroundColorAttributeName : colorSelected,
    NSFontAttributeName : titleFontAll
]

UITabBarItem.appearance().setTitleTextAttributes(attributesNormal, forState: .Normal)
UITabBarItem.appearance().setTitleTextAttributes(attributesSelected, forState: .Selected)

Answer 2

iOS 10 ( , ), .normal, , .

UITabBarItem.appearance().setTitleTextAttributes([NSFontAttributeName : UIFont.myMediumFont(withSize: 10)], for: [.normal])

, tintColors .setTitleTextAttributes :

UITabBar.appearance().unselectedItemTintColor = UIColor.white
UITabBar.appearance().tintColor = UIColor.black