照片和視頻未保存在我的自定義相冊中

Question

照片和視頻未保存在我的自定義相冊（TestAlbum）中。 而是將其保存在相機膠卷中。 您能否幫助我確定問題並幫助我更正代碼。

PHPhotoLibrary.shared().performChanges({
    let albumName = "TestAlbum"
    let assetCollection: PHAssetCollection!
    let fetchOptions = PHFetchOptions()
    PHAssetCollectionChangeRequest.creationRequestForAssetCollection(withTitle: albumName)

    fetchOptions.predicate = NSPredicate(format: "title = %@", albumName)

    let collection = PHAssetCollection.fetchAssetCollections(with: .album, subtype: .any, options: fetchOptions)

    if let _: AnyObject = collection.firstObject {
        collection.firstObject
    }

    let options = PHAssetResourceCreationOptions()
    options.shouldMoveFile = true

    let creationRequest = PHAssetCreationRequest.forAsset()

    creationRequest.addResource(with: .video, fileURL: outputFileURL, options: options)
}, completionHandler: { success, error in
    if !success {
        print("Could not save movie to photo library: \(String(describing: error))")
    }
    cleanUp()
})

Answer 1

就像上面的評論一樣，我將相冊的創建和照片/視頻的保存分為兩個performChanges塊。 但是我在您的代碼中都看不到您實際上是在將資產（照片/視頻）添加到資產集合（相冊）中的位置。 為此，請執行以下操作

let assetPlaceholder = creationRequest.placeholderForCreatedAsset
let albumChangeRequest = PHAssetCollectionChangeRequest(for:collection)
if let changeRequest = albumChangeRequest, let placeholder = assetPlaceholder {
    changeRequest.addAssets(NSArray(array:[placeholder]))
}