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

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SWIFT 4  view layer contents    imageLiteral resourceName   webbg   cgImage

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Swift 5 3 in XCode 12 2 Playgrounds Place the cursor wherever in the code the  insertLiteral would have been in earlier versions  Select from the top-menu Editor- gt Insert Image Literal    and navigate to the file  Click Open  The file is added to a playground Resource folder and will then appear when the playground is run in whichever view it was positioned when selected  If a file is already in the playground Bundle  e g  in  Resources  it can be dragged directly to the required position in the code  where it will be represented by an icon   cf  Apple help docs give details of this and how to place other colour and file literals

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override func viewDidLoad         super viewDidLoad       self view backgroundColor   UIColor patternImage  UIImage named   background png

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Background Image from API in swift 4  with Kingfisher     import UIKit import Kingfisher  extension UIView    func addBackgroundImage imgUrl  String  placeHolder  String       let backgroundImage   UIImageView frame  self bounds      backgroundImage kf setImage with  URL string  imgUrl   placeholder  UIImage named  placeHolder       backgroundImage contentMode   UIViewContentMode scaleAspectFill     self insertSubview backgroundImage  at  0         Usage   someview addBackgroundImage imgUrl   yourImgUrl   placeHolder   placeHolderName

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For Swift 4  let backgroundImage   UIImageView frame  UIScreen main bounds  backgroundImage image   UIImage named   bg name png   backgroundImage contentMode   UIViewContentMode scaleAspectFill self view insertSubview backgroundImage  at  0

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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

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You can try this as well  which is really a combination of previous answers from other posters here        let backgroundImage   UIImageView frame  UIScreen main bounds      backgroundImage image   UIImage named   RubberMat       backgroundImage contentMode    UIViewContentMode scaleAspectFill     self view insertSubview backgroundImage  at  0

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override func viewDidLoad          let backgroundImage   UIImageView frame  UIScreen main bounds      backgroundImage image   UIImage named   bg image       backgroundImage contentMode   UIViewContentMode scaleAspectfill     self view insertSubview backgroundImage  at  0       Updated at 20-May-2020   The code snippet above doesn t work well after rotating the device  Here is the solution which can make the image stretch according to the screen size after rotating    class ViewController  UIViewController        var imageView  UIImageView             let imageView   UIImageView frame   zero          imageView image   UIImage named   bg image           imageView contentMode    scaleToFill         imageView translatesAutoresizingMaskIntoConstraints   false         return imageView              override func viewDidLoad             super viewDidLoad            view insertSubview imageView  at  0          NSLayoutConstraint activate               imageView topAnchor constraint equalTo  view topAnchor               imageView leadingAnchor constraint equalTo  view leadingAnchor               imageView trailingAnchor constraint equalTo  view trailingAnchor               imageView bottomAnchor constraint equalTo  view bottomAnchor

[ios] How to set a background image in Xcode using swift?

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