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在使用 时遵循@matt 的代码UIImagePicker，我可以防止用户在选择.livePhoto图像后使用：

let asset = info[UIImagePickerControllerPHAsset] as? PHAsset

if asset?.playbackStyle == .livePhoto { 
   // alert user this photo isn't a possibility 
}

使用 PHFetchOptions 时，如何防止它们被显示，而不是在 enumerateObjects 回调中过滤掉它们？

fileprivate func fetchPhotos() {

    let fetchOptions = PHFetchOptions()
    fetchOptions.fetchLimit = 1000
    let sortDescriptor = NSSortDescriptor(key: "creationDate", ascending: false)
    fetchOptions.sortDescriptors = [sortDescriptor]

    let allPhotos = PHAsset.fetchAssets(with: .video, options: fetchOptions)

    allPhotos.enumerateObjects {
        [weak self] (asset, count, stop) in

        if asset.playbackStyle == .livePhoto {
            return
        }

        let imageManager = PHImageManager.default()
        let targetSize = CGSize(width: 350, height: 350)
        let options = PHImageRequestOptions()
        options.isSynchronous = true

        imageManager.requestImage(for: asset, targetSize: targetSize, contentMode: .aspectFit, options: options, resultHandler: {
            [weak self] (image, info) in

            if let image = image {
                self?.tableData.append(image)
            }

            if count == allPhotos.count - 1 {
                self?.collectionView.reloadData()
            }
        })
    }
}
4

1 回答 1

1

您可以使用 的predicate属性PHFetchOptions。mediaSubtype如果资产的属性表明它是实时照片，则将谓词设置为失败。

fetchOptions.predicate = NSPredicate(format: "(mediaSubtype & %ld) == 0", PHAssetMediaSubtype.PhotoLive.rawValue)
于 2018-09-12T01:55:21.590 回答