如何像 Photos.app 一样对相册进行排序

Question

我想以与 Photos.app 相同的方式对相册进行排序。我为PHAssetCollection.fetchAssetCollections(with type: subtype:options:)尝试了所有可能的PHFetchOptions：

• 无
• 默认不指定sortDescriptors
• sortDescriptors 与 localizedTitle、title、startDate、endDate,estimatedAssetCount`

但没有一个提供与 Photos.app 相同的顺序。

Answer 1

// get Photos timeline
guard let timelineFetchResult = PHCollectionList.fetchMomentLists(with: .momentListCluster, options: nil).firstObject else { return }

// get Moments seperated by photos' creation date
let momentsFetchResult = PHAssetCollection.fetchMoments(inMomentList: timelineFetchResult, options: nil)

// get photos from every Moment
for index in 0 ..< momentsFetchResult.count {
    let moment = momentsFetchResult[index]
    let assetsFetchResult = PHAsset.fetchAssets(in: moment, options: nil)
    // ...
}