import Photos
import DKImagePickerController  // 忘れないように

/* classにUIImagePickerControllerを書き加える
例：　class ViewController: UIViewController, UIImagePickerController {
*/

@IBOutlet weak var imageView: UIImageView!




let pickerController = DKImagePickerController()
            // 選択可能な枚数を20にする
            pickerController.maxSelectableCount = 20
            pickerController.didSelectAssets = { [unowned self] (assets: [DKAsset]) in

                // 選択された画像はassetsに入れて返却されるのでfetchして取り出す
                for asset in assets {
                    asset.fetchFullScreenImage(completeBlock: { (image, info) in
                        // ここで取り出せる
                        self.imageView.image = image
                    })

                }


            }

            self.present(pickerController, animated: true) {}