UINavigationBar.appearance().titleTextAttributes = [NSForegroundColorAttributeName不工作

Question

我正试图在我的UINavigationBar中设置标题颜色，在我的AppDelegate.swift中，像这样-

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    // Override point for customization after application launch.

    UINavigationBar.appearance().barTintColor = UIColor(red: 26.0/255.0, green: 188.0/255.0, blue: 156.0/255.0, alpha: 1.0)
    UINavigationBar.appearance().tintColor = UIColor(red: 255.0/255.0, green: 255.0/255.0, blue: 255.0/255.0, alpha: 1.0)
    UINavigationBar.appearance().titleTextAttributes = [NSForegroundColorAttributeName: UIColor.white]
    UINavigationBar.appearance().titleTextAttributes = [NSFontAttributeName: UIFont(name: "Pacifico", size: 24)!]

    // Turquoise color rgba(26, 188, 156,1.0)

    return true
}

但不起作用。结果就像

为什么这不管用？谢谢!

Answer 1

您正在将最初使用颜色设置的titleTextAttributes值重写为仅包含字体的新值。

您应该将属性组合起来，然后立即设置它们：

编辑: Swift 4

let color = UIColor.white
let font = UIFont(name: "Pacifico", size: 24)!

let attributes: [NSAttributedStringKey: AnyObject] = [
        NSAttributedStringKey.font: font,
        NSAttributedStringKey.foregroundColor: color
    ]

UINavigationBar.appearance().titleTextAttributes = attributes

Swift 3

let color = UIColor.white
let font = UIFont(name: "Pacifico", size: 24)!

let attributes: [String: AnyObject] = [
    NSFontAttributeName: font,
    NSForegroundColorAttributeName: color
]

UINavigationBar.appearance().titleTextAttributes = attributes

Answer 2

Swift 4：

对于NavigationBar背景色：

UINavigationBar.appearance().barTintColor = UIColor(red: 50/255, green: 90/255, blue: 150/255, alpha: 1)

对于NavigationBar标题、颜色和字体：

let attrs = [
    NSAttributedStringKey.foregroundColor: UIColor.red,
    NSAttributedStringKey.font: UIFont(name: "Georgia-Bold", size: 24)!
]

UINavigationBar.appearance().titleTextAttributes = attrs

参考资料：这里

Answer 3

代表Swift 4.2

let color = UIColor.white
let font = UIFont(name: "Pacifico", size: 24)!

let attributes = [
  NSAttributedString.Key.font: font,
  NSAttributedString.Key.foregroundColor: color
]

UINavigationBar.appearance().titleTextAttributes = attributes