如何使用选择器将每个用户的多个图像存储到核心数据中？

Question

我在使用Core Data存储标记到一个用户或一个位置的多个图像时遇到问题。

存储图像或其他媒体类型的最佳做法是什么？ Core Data是否适用于大型二进制数据（如图像或媒体）？

Answer 1

这是功能....

func showImagePickerWithAssetType（assetType：DKImagePickerControllerAssetType，         allowMultipleType：Bool = true，         sourceType：DKImagePickerControllerSourceType = [.Camera，.Photo]）{

        let pickerController = DKImagePickerController()
        pickerController.assetType = assetType
        pickerController.allowMultipleTypes = allowMultipleType
        pickerController.sourceType = sourceType

        pickerController.didCancelled = {
            print("didCancelled")
        }

        pickerController.didSelectedAssets = { [unowned self] (assets: [DKAsset]) in
            print("didSelectedAssets")
            print(assets.map({ $0.url}))

            self.assets = assets
            self.previewView?.reloadData()
        }

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