download image from web url swift

extension UIImageView { func downloaded(from url: URL, contentMode mode: UIViewContentMode = .scaleAspectFit) { // for swift 4.2 syntax just use ===> mode: UIView.ContentMode contentMode = mode URLSession.shared.dataTask(with: url) { data, response, error in guard let httpURLResponse = response as? HTTPURLResponse, httpURLResponse.statusCode == 200, let mimeType = response?.mimeType, mimeType.hasPrefix("image"), let data = data, error == nil, let image = UIImage(data: data) else { return } DispatchQueue.main.async() { self.image = image } }.resume() } func downloaded(from link: String, contentMode mode: UIViewContentMode = .scaleAspectFit) { // for swift 4.2 syntax just use ===> mode: UIView.ContentMode guard let url = URL(string: link) else { return } downloaded(from: url, contentMode: mode) } } // Usage: imageView.downloaded(from: "https://cdn.arstechnica.net/wp-content/uploads/2018/06/macOS-Mojave-Dynamic-Wallpaper-transition.jpg")

uiimage swift src url

let imageCache = NSCache<AnyObject, AnyObject>()

class CustomImageView: UIImageView {
    
    var ImageUrlString: URL?
    
    func setImage(from url: URL, contentMode mode: UIViewContentMode = .scaleAspectFit) {
        contentMode = mode
        ImageUrlString = url
        if let imageFromCache = imageCache.object(forKey: url as AnyObject) {
            self.image = imageFromCache as? UIImage
            return
        }
        
        URLSession.shared.dataTask(with: url) { data, response, error in
            guard
                let httpURLResponse = response as? HTTPURLResponse, httpURLResponse.statusCode == 200,
                let mimeType = response?.mimeType, mimeType.hasPrefix("image"),
                let data = data, error == nil,
                let imageToCache = UIImage(data: data)
                else { return }
            DispatchQueue.main.async() {
                if self.ImageUrlString == url {
                    self.image = imageToCache
                }
                imageCache.setObject(imageToCache, forKey: url as AnyObject)
            }
        }.resume()
    }
    func setImage(from link: String, contentMode mode: UIViewContentMode = .scaleAspectFit) {
        guard let url = URL(string: link) else { return }
        setImage(from: url, contentMode: mode)
    }
}

Posted by: Guest on April-01-2020

Code answers related to "download image from web url swift"

Code answers related to "Swift"

Browse Popular Code Answers by Language

Answers for "download image from web url swift"

Code answers related to "download image from web url swift"

Code answers related to "Swift"

Browse Popular Code Answers by Language

Popular Programming Languages

Advertisements

Company

Compilers

Help

Connect with us