Swift - iOS：更改导航栏的颜色

问题描述：

我正在尝试更改导航栏的颜色，但我发现如果导航器是根管理器，那是唯一不可能的。

I'm trying to change the color of my navigator bar but I found that it's only impossible if the navigator is the root one.

我正在尝试这个：

self.navigationController?.navigationBar.translucent = true

self.navigationController!.navigationBar.barTintColor = UIColor.blueColor()

我所有的 Viewcontrollers 与导航控制器有关。然而，没有任何改变。事实上，我试图从故事板制作相同的东西，但只有当我在第一个导航器中时它才有效。

All my Viewcontrollers are related to navigator controllers. However nothing is changed. In fact I tried to make the same things from storyboard but it works only if I'm in the first navigator.

我试着阅读与此问题相关的所有内容但发现没有

I tried to read everything related to this problem but found nothing

我可以像这样添加任何项目到导航栏

I could add any item to the navigator bar like this

let HomeImage = UIImage(named: "home")!
    let Home : UIBarButtonItem = UIBarButtonItem(image: HomeImage,  style: .Plain, target: self, action: "home:")
    navigationItem.rightBarButtonItem = Home

答

事实上，我发现解决方案是在 AppDelegate中使用。 siwft ：

In fact, i found that the solution was to use in the AppDelegate.siwft :

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
    // Override point for customization after application launch.
    UINavigationBar.appearance().barTintColor = UIColor(red: 0, green: 0/255, blue: 205/255, alpha: 1)
    UINavigationBar.appearance().tintColor = UIColor.whiteColor()
    UINavigationBar.appearance().titleTextAttributes = [NSForegroundColorAttributeName:UIColor.whiteColor()]

    return true
}

然后在每个视图控制器中，我们需要另一种背景颜色或其他颜色

and then in each view controller, that we need another background color or something else

segue应该与show不同

the segue should be different than "show"

使用func viewWillAppear

 override func viewWillAppear(animated: Bool) {
     super.viewWillAppear(animated)
     self.navigationController?.navigationBar.barTintColor = UIColor.whiteColor()
     self.navigationController?.navigationBar.tintColor = UIColor.blueColor()
     self.navigationController!.navigationBar.titleTextAttributes = [NSForegroundColorAttributeName: UIColor.blueColor()]
}

Swift - iOS：更改导航栏的颜色

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