如何使用照片框架从iOS上的Camera Roll获取最新的照片？

import Photos

func fetchLatestPhoto(completion: @escaping (UIImage?) -> Void) {
    PHPhotoLibrary.requestAuthorization { status in
        guard status == .authorized else {
            completion(nil)
            return
        }
        
        let fetchOptions = PHFetchOptions()
        fetchOptions.sortDescriptors = [NSSortDescriptor(key: "creationDate", ascending: false)]
        fetchOptions.fetchLimit = 1
        
        let fetchResult = PHAsset.fetchAssets(with: .image, options: fetchOptions)
        if let asset = fetchResult.firstObject {
            let targetSize = CGSize(width: 500, height: 500) // 设置合适的目标尺寸
            let options = PHImageRequestOptions()
            options.isSynchronous = true
            
            PHImageManager.default().requestImage(for: asset, targetSize: targetSize, contentMode: .aspectFill, options: options) { image, _ in
                completion(image)
            }
        } else {
            completion(nil)
        }
    }
}

// 调用示例
fetchLatestPhoto { image in
    if let image = image {
        // 在这里处理获取到的最新照片
    } else {
        // 处理获取照片失败的情况
    }
}