ios - 导航栏颜色设置不正确

Question

我正在尝试设置导航栏颜色。我在此应用程序中不使用 Storyboard，因此必须用代码完成。目前我有这个:

 navigationController.navigationBar.isHidden = false
 navigationController.navigationBar.backgroundColor = UIColor(named: "tint")

 navigationController.navigationBar.shadowImage = UIImage()
 navigationController.navigationBar.isTranslucent = true
 navigationController.navigationBar.setBackgroundImage(UIImage(), for: .default)
 navigationController.navigationBar.tintColor = .white
 navigationController.navigationBar.titleTextAttributes  =[NSAttributedString.Key.foregroundColor: UIColor.white] 

实际上我得到了:

为什么导航栏上面的颜色不一样？

Answer 1

UINavigationBar.appearance().backgroundColor = UIColor.greenColor()
UIBarButtonItem.appearance().tintColor = UIColor.magentaColor()
UINavigationBar.appearance().titleTextAttributes = [UITextAttributeTextColor: UIColor.blueColor()]
UITabBar.appearance().backgroundColor = UIColor.yellowColor();

有关 Swift 中 UIAppearance API 的更多信息，您可以在此处阅读:https://developer.apple.com/documentation/uikit/uiappearance

或

UINavigationBar.appearance().barTintColor = .black
UINavigationBar.appearance().tintColor = .white
UINavigationBar.appearance().titleTextAttributes = [NSAttributedString.Key.foregroundColor: UIColor.white]
UINavigationBar.appearance().isTranslucent = false