Swift应用程序配色方案实施的最佳实践

您可以创建UIColor扩展并将颜色保存在此处。

extension UIColor {

    var yourColor: UIColor {
        //choose your custom rgb values
        return UIColor(red: 255/255, green: 255/255, blue: 255/255, alpha: 1.0)
    } 

    var yourSecondColor: UIColor {
        //choose your custom rgb values
        return UIColor(red: 255/255, green: 255/255, blue: 255/255, alpha: 1.0)
    } 
}

然后,您可以像访问任何其他UIColor一样访问它们:

view.backgroundColor = UIColor.yourColor
navigationController?.navigationBar?.tintColor = UIColor.yourSecondColor

如果要更改导航栏颜色或选项卡栏颜色,可以编写UIViewController扩展:

extension UIViewController {
    func setNavigationBarColor() {
        self.navigationController?.navigationBar.barTintColor = UIColor.myColor

    }
}

您可以在viewController中访问func:

override func viewDidLoad() {
     super.viewDidLoad()
     self.setNavigationBarColor()
}

您可以通过app delegate在整个应用程序中设置导航栏和选项卡栏等内容的颜色。示例:

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    // Override point for customization after application launch.
    UINavigationBar.appearance().barTintColor = UIColor.yourColor
    return true
}