How to set a background image in Xcode using swift?

Question

How can I set a background image for my main view controller in Xcode 6 using swift? I know that you can do this in the assistant editor as below:

override func viewDidLoad() {     super.viewDidLoad()     view.backgroundColor = UIColor.yellowColor() } 

What is the code to set the background to an image I have in my assets folder?

Answer 1

override func viewDidLoad() {     super.viewDidLoad()     self.view.backgroundColor = UIColor(patternImage: UIImage(named: "background.png")) } 

Answer 2

I am beginner to iOS development so I would like to share whole info I got in this section.

First from image assets (images.xcassets) create image set .

According to Documentation here is all sizes need to create background image.

For iPhone 5:    640 x 1136     For iPhone 6:    750 x 1334 (@2x) for portrait    1334 x 750 (@2x) for landscape     For iPhone 6 Plus:    1242 x 2208 (@3x) for portrait    2208 x 1242 (@3x) for landscape     iPhone 4s (@2x)          640 x 960     iPad and iPad mini (@2x)     1536 x 2048 (portrait)    2048 x 1536 (landscape)     iPad 2 and iPad mini (@1x)    768 x 1024 (portrait)    1024 x 768 (landscape)     iPad Pro (@2x)    2048 x 2732 (portrait)    2732 x 2048 (landscape) 

call the image background we can call image from image assets by using this method UIImage(named: "background") here is full code example

  override func viewDidLoad() {           super.viewDidLoad()              assignbackground()             // Do any additional setup after loading the view.         }    func assignbackground(){         let background = UIImage(named: "background")          var imageView : UIImageView!         imageView = UIImageView(frame: view.bounds)         imageView.contentMode =  UIViewContentMode.ScaleAspectFill         imageView.clipsToBounds = true         imageView.image = background         imageView.center = view.center         view.addSubview(imageView)         self.view.sendSubviewToBack(imageView)     }