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  • swift 异步加载图片

    import UIKit
    
    @UIApplicationMain
    class AppDelegate: UIResponder, UIApplicationDelegate {
    
        var window: UIWindow?
    
    
        func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
            self.window = UIWindow(frame: UIScreen.mainScreen().bounds)
            // Override point for customization after application launch.
            self.window!.backgroundColor = UIColor.whiteColor()
            
            self.window!.rootViewController = RootViewController();
            
            self.window!.makeKeyAndVisible()
            return true
        }
    }
    
    import UIKit
    
    class RootViewController: UIViewController {
    
        override func viewDidLoad() {
            super.viewDidLoad()
            
            let imageView = UIImageView.init(frame: UIScreen.mainScreen().bounds);
            imageView.backgroundColor = UIColor.greenColor()
            self.view.addSubview(imageView)
            
            let url:NSURL = NSURL.init(string: "http://pic2.ooopic.com/11/86/60/84bOOOPIC13.jpg")!
            let request:NSURLRequest = NSURLRequest(URL: url)
            //异步加载图片
            NSURLConnection.sendAsynchronousRequest(request, queue: NSOperationQueue.mainQueue(), completionHandler:{ (response, data, error) -> Void in
                 let image = UIImage(data: data!)
                imageView.image = image
            
         })
        }
    }
    
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  • 原文地址:https://www.cnblogs.com/lantu1989/p/5160226.html
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