Swiftでスクリーンショットを取得する

サンプルコード

ViewController.swift

class SampleProject : UIViewController {

    @IBOutlet weak var screenShot: UIImage!
    var capturedImage : UIImage?

    override func viewDidLoad() {
        super.viewDidLoad()
        setup()
    }

    private func setup() {
        capturedImage = getScreenShot() as UIImage
        screenShot.image = capturedImage
    }

    private func getScreenShot() -> UIImage {
        let rect = self.view.bounds
        UIGraphicsBeginImageContextWithOptions(rect.size, false, 0.0)
        let context: CGContextRef = UIGraphicsGetCurrentContext()!
        self.view.layer.renderInContext(context)
        let capturedImage : UIImage = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()

        return capturedImage
    }
}