set navigationBar background image in swift

问题

Code below is not working for me, can anyone help to figure it out what is wrong?

var image = UIImage(named: "10384605_10152519403846670_5189785375955620548_n.jpg") as UIImage

self.navigationController.navigationBar.setBackgroundImage(image , forBarMetrics:UIBarMetrics)

回答1:

self.navigationController.navigationBar.setBackgroundImage(image, 
                                                   forBarMetrics: .Default)

回答2:

In AppDelegate.swift

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
    // Override point for customization after application launch.

    //Image Background Navigation Bar
    let navBackgroundImage:UIImage! = UIImage(named: "backgroundNB.png")
    UINavigationBar.appearance().setBackgroundImage(navBackgroundImage, forBarMetrics: .Default)

    return true
}

回答3:

In Swift 3:

If you want to add a repeating image in the background you can make this call in AppDelegate > didFinishLaunchingWithOptions:

let image = UIImage(named: "imageNameInAsset")
UINavigationBar.appearance().setBackgroundImage(image, for: .default)

If you want to add an image to the center of the navigation bar you need to do this in the ViewController > viewWillAppear:

let titleView = UIImageView(image: UIImage(named: "imageNameInAsset"))
self.navigationItem.titleView = titleView

回答4:

If you want to fill the image in navigation bar just use the code:

self.navigationController?.navigationBar.setBackgroundImage(UIImage(named: "your_Background_Image_Name")?.resizableImage(withCapInsets: UIEdgeInsets.zero, resizingMode: .stretch), for: .default)

回答5:

let navBackgroundImage:UIImage! = UIImage(named: "navbar_bg")

[UINavigationBar .appearance().setBackgroundImage(navBackgroundImage, forBarMetrics:.Default)]

回答6:

For Swift 3:

In AppDelegate.swift:

UINavigationBar.appearance().setBackgroundImage(UIImage(named:"pattern.png"),
                                                                for: .default)

In viewDidLoad():

self.navigationController?.navigationBar.setBackgroundImage(UIImage(named:"pattern.png"),
     for: .default)

回答7:

Add the following code to didFinishLaunchingWithOptions method in AppDelegate.swift:

    if let myImage = UIImage(named: "navBarImage.jpg"){
        UINavigationBar.appearance().setBackgroundImage(myImage, for: .default)
    }

回答8:

@benLIVE asked for how to do a back button, which I was doing when I found the accepted answer, so I thought I'd leave this here too (if a bit late) b/c if you are going to replace a nav bar icon, you may as well replace all of them!

    let cubeIcon = UIImageView(image: yourImage)
    cubeIcon.contentMode = .scaleAspectFit
    self.navigationItem.backBarButtonItem?.image = cubeIcon.image

回答9:

set backgroundImage in Navigation controller

self.navigationController?.navigationBar .setBackgroundImage(UIImage(named: "cricket"), for: .default)

来源：https://stackoverflow.com/questions/24328363/set-navigationbar-background-image-in-swift

标签

uinavigationbar

swift

ios8