[Swift] navigation 백그라운드 색 변경

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {

        // Override point for customization after application launch.

        UINavigationBar.appearance().barTintColor = UIColor.white//.init(red: 23.0/255, green: 197.0/255, blue: 157.0/255, alpha: 1.0)

        

        // To change colour of tappable items.

        UINavigationBar.appearance().tintColor = .black

        

        // To apply textAttributes to title i.e. colour, font etc.

        UINavigationBar.appearance().titleTextAttributes = [.foregroundColor : UIColor.black, .font : UIFont.init(name: "AvenirNext-DemiBold", size: 22.0)!]

        

        // To control navigation bar's translucency.

        UINavigationBar.appearance().isTranslucent = false

        return true

    }