ios - 如何更改 UINavigationBar 的字体和颜色？

Question

我想从 AppDelegate 更改我的 UINavigationBar 的字体和颜色。为此，我这样做:

let appearance = UINavigationBar.appearance()
    appearance.translucent = false
    appearance.titleTextAttributes = [NSFontAttributeName: UIFont(name: "Chalkduster", size: 21)!]
    appearance.barTintColor = UIColor(red: 80/255, green: 185/255, blue: 225/255, alpha: 1)
    appearance.titleTextAttributes = [NSForegroundColorAttributeName: UIColor.whiteColor()]

但在这种情况下仅适用于其中之一，例如:

如果我首先设置 - 字体，然后设置 - 颜色，它只会改变颜色，而不是字体。如果我首先设置 - 颜色，在第二个 - 字体，它只会改变字体，而不是颜色。

如何更改它们？

Answer 1

let appearance = UINavigationBar.appearance()
    appearance.translucent = false
    appearance.barTintColor = UIColor(red: 80/255, green: 185/255, blue: 225/255, alpha: 1)
    appearance.titleTextAttributes = [NSFontAttributeName: UIFont(name: "Chalkduster", size: 21)!, NSForegroundColorAttributeName: UIColor.whiteColor()]