ios - 删除导航栏下方的阴影线而不删除栏颜色？

Question

我已经尝试过类似问题中显示的许多答案，但没有一个对我有用。我正在尝试删除导航栏 1px 阴影，但我尝试的所有操作最终都删除了栏颜色并使其变为白色/一些浅色。知道如何删除它(在 App Delegate 中吗？)

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {


    let redPart: CGFloat = CGFloat(65) / 255
    let greenPart: CGFloat = CGFloat(107) / 255
    let bluePart: CGFloat = CGFloat(166) / 255
    UINavigationBar.appearance().shadowImage = UIImage()
    UINavigationBar.appearance().setBackgroundImage(UIImage(), forBarMetrics: UIBarMetrics.Default)

    UINavigationBar.appearance().barTintColor = UIColor(red: redPart, green: greenPart, blue: bluePart, alpha: 1.0)
    //Set the colors for bar button items and text
    UINavigationBar.appearance().tintColor = UIColor.whiteColor()
    UINavigationBar.appearance().titleTextAttributes = [NSForegroundColorAttributeName : UIColor.whiteColor(), NSFontAttributeName: UIFont(name: "HelveticaNeue-Light", size: 22)!]



    // Override point for customization after application launch.
    NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(AppDelegate.checkForReachability(_:)), name: kReachabilityChangedNotification, object: nil);

    self.reachability = Reachability.reachabilityForInternetConnection();

    self.reachability!.startNotifier()


    return true
}

上面是我的代码，这是我试过的:

UINavigationBar.appearance().shadowImage = UIImage()
UINavigationBar.appearance().setBackgroundImage(UIImage(), forBarMetrics: .Default)

但每次，无论它在哪一行，条形图开始看起来像这样，而不是我设置的蓝色...

Answer 1

你用来去除阴影的线条没问题

UINavigationBar.appearance().shadowImage = UIImage()
UINavigationBar.appearance().setBackgroundImage(UIImage(), forBarMetrics: .Default)

但您还需要确保导航栏不是半透明的(默认情况下是半透明的)，以显示您的纯色 barTintColor

UINavigationBar.appearance().isTranslucent = false