iOS] Swift navigation bar 색상 변경

Changing navigation bar color in Swift

- Navigation Bar

navigationController?.navigationBar.barTintColor = UIColor.green

- Navigation Bar Text

navigationController?.navigationBar.titleTextAttributes = [NSForegroundColorAttributeName: UIColor.orange]

- Tab Bar

tabBarController?.tabBar.barTintColor = UIColor.brown

- Tab Bar Text

tabBarController?.tabBar.tintColor = UIColor.yellow