Swift - iOS: Changer la couleur d'une barre de navigation

Question

Je suis en train de changer la couleur de ma barre de navigation, mais j'ai trouvé que c'est impossible si le navigateur est la racine.

Je suis en train d'essayer ceci:

self.navigationController?.navigationBar.translucent = true

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

Tous mes Viewcontrollers sont liés à l'application navigateur contrôleurs. Toutefois, rien n'est changé. En fait j'ai essayé de faire les mêmes choses du storyboard, mais il ne fonctionne que si je suis dans le premier navigateur.

J'ai essayé de lire tout ce qui a trait à ce problème, mais rien trouvé

Je pourrais ajouter un élément à la barre du navigateur comme ceci

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

Answer 1

En fait, j'ai trouvé que la solution consistait à utiliser dans les 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
}
 

puis dans chaque contrôleur de vue, qu'il nous faut une autre couleur d'arrière-plan ou autre chose

1. le segue devrait être différent de "show"

2. utiliser le 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()]
   }
    

Answer 2

Mis à jour pour Swift 3

     // setup navBar.....
    UINavigationBar.appearance().barTintColor = .black
    UINavigationBar.appearance().tintColor = .white
    UINavigationBar.appearance().titleTextAttributes = [NSForegroundColorAttributeName: UIColor.white]
    UINavigationBar.appearance().isTranslucent = false
 

Swift 4

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

Answer 3

Swift 4.2 :

     //To change Navigation Bar Background Color
    UINavigationBar.appearance().barTintColor = UIColor.blue
    //To change Back button title & icon color
    UINavigationBar.appearance().tintColor = UIColor.white
    //To change Navigation Bar Title Color
    UINavigationBar.appearance().titleTextAttributes = [NSAttributedString.Key.foregroundColor: UIColor.white]
 

Swift 3.x :

 //To change Navigation Bar Background Color
UINavigationBar.appearance().barTintColor = UIColor.blue
//To change Back button title & icon color
UINavigationBar.appearance().tintColor = UIColor.white
//To change Navigation Bar Title Color
UINavigationBar.appearance().titleTextAttributes = [NSForegroundColorAttributeName: UIColor.white]
 

Answer 4

Pour changer la couleur du thème de la barre de navigation dans l'ensemble de l'application, vous pouvez le faire en utilisant l'apparence de la barre UiNavigation.

 UINavigationBar.appearance().barTintColor = UIColor.redColor()
 

Answer 5

Effectuez la mise à jour suivante dans le fichier AppDelegate.Swift, à savoir UINavigationBar.appearance().barTintColor = UIColor(red:x.xx, green:x.xx, blue:x.xx, alpha:1.0)

Reportez-vous à l'exemple ci-dessous

 import UIKit

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

var window: UIWindow?


func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    // Override point for customization after application launch.
    UINavigationBar.appearance().barTintColor = UIColor(red:0.03, green:0.25, blue:0.11, alpha:1.0)
    UINavigationBar.appearance().tintColor = UIColor.white
    UINavigationBar.appearance().titleTextAttributes = [NSForegroundColorAttributeName:UIColor.white]
    return true
}

func applicationWillResignActive(_ application: UIApplication) {
    // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
    // Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game.
}

func applicationDidEnterBackground(_ application: UIApplication) {
    // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
    // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
}

func applicationWillEnterForeground(_ application: UIApplication) {
    // Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background.
}

func applicationDidBecomeActive(_ application: UIApplication) {
    // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
}

func applicationWillTerminate(_ application: UIApplication) {
    // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
}

}