Swift 通过裁剪修改/编辑相位集图像

是否有任何方法可以通过裁剪或编辑来修改/编辑相位集图像？ 我有一个资产数组，我想通过从所选资产获取图像并传递裁剪控制器来裁剪资产的图像，作为回报，我想在所选资产中更改裁剪后的图像

有我的代码需要很好地理解

func presentCropViewController(with:IndexPath) {
    self.allPhotos[with.item].getImage { (img) in
        if let image = img{
              self.indexPathForCropping = with
            let cropViewController = CropViewController(image: image)
            cropViewController.delegate = self
            cropViewController.view.tintColor = UIColor.themeGreen()
            self.present(cropViewController, animated: true, completion: nil)

        }
    }


}

从资源传递图像后，我用这种方法得到了裁剪图像

 func cropViewController(_ cropViewController: CropViewController, didCropToImage image: UIImage, withRect cropRect: CGRect, angle: Int) {
    cropViewController.dismiss(animated: true, completion: nil)
    // Here i get the cropped image and want to update selected asset with this image

}

---

如果您也提到投票原因，我将不胜感激。因此，我据此准备了我的问题。

我发现解决方案可能不是一种有效的方法，但解决了我的问题

extension PHAsset {

func updateChanges(with img:UIImage,completion:@escaping(PHAsset?)->()){

    PHPhotoLibrary.shared().performChanges({
        // create cropped image into phphotolibrary
        PHAssetChangeRequest.creationRequestForAsset(from: img)
    }) { (success, error) in
        if success{
            // fetch request to get last created asset
            let fetchOptions = PHFetchOptions()
            fetchOptions.sortDescriptors = [NSSortDescriptor(key:"creationDate", ascending: false)]
            fetchOptions.fetchLimit = 1
            let fetchResult: PHFetchResult = PHAsset.fetchAssets(with: PHAssetMediaType.image, options: fetchOptions)

            if let asset = fetchResult.firstObject{
                // replace your selected asset with new cropped one
                completion(asset)
            }else{
                completion(nil)
            }

        }else{
            completion(nil)
        }
    }

}

}

只需传递裁剪/修改后的图像，即可获得具有相同裁剪/修改后图像的新资源