在UICollectionView中快速获取图像和视频

Question

我已经使用PHAsset原理来获取图像和视频，但是仅显示图像。我也尝试将其更改为NSPredicate，它崩溃了。所以，请问有人可以帮我解决这个问题吗？

私人功能fetchPhotos（）{         让allPhotos = PHAsset.fetchAssets（with：.image，options：assetFetchOptions（））

    collectionView?.refreshControl?.beginRefreshing()
    DispatchQueue.global().async {
        allPhotos.enumerateObjects { (asset, count, stop) in
            let imageManager = PHImageManager.default()
            let targetSize = CGSize(width: 200, height: 200)
            let options = PHImageRequestOptions()
            options.isSynchronous = true
            imageManager.requestImage(for: asset, targetSize: targetSize, contentMode: .aspectFit, options: options, resultHandler: { (image, info) in

                if let image = image {
                    self.images.append(image)
                    self.assets.append(asset)
                    if self.selectedImage == nil {
                        self.selectedImage = image
                    }
                }

                if count == allPhotos.count - 1 {
                    DispatchQueue.main.async {
                        self.collectionView?.reloadData()
                        self.collectionView?.refreshControl?.endRefreshing()
                    }
                }
            })
        }
    }
}