let url = NSURL(string: "画像のURL") var imageData = NSData(contentsOfURL: url!) var image = UIImage(data:imageData!) let url = NSURL(string: "画像のURL") var error: NSError? var imageData = NSData(contentsOfURL: url!, options: NSDataReadingOptions.DataReadingMappedIfSafe, error: &error) if error == nil { var image = UIImage(data:imageData!) } else { println(error) }