swift – 使用FileManager复制文件时出错(CFURLCopyResourceProp

CFURLCopyResourcePropertyForKey failed because it was passed an URL which has no scheme
Error Domain=NSCocoaErrorDomain Code=262 “The file couldn’t be opened because the specified URL type isn’t supported.”

我正在使用Xcode 9 beta和Swift 4.

let fileManager = FileManager.default
let allowedMediaFiles = ["mp4","avi"]

func isMediaFile(_ file: URL) -> Bool {
    return allowedMediaFiles.contains(file.pathExtension)
}

func getMediaFiles(from folder: URL) -> [URL] {
    guard let enumerator = fileManager.enumerator(at: folder,includingPropertiesForKeys: []) else { return [] }

    return enumerator.allObjects
        .flatMap {$0 as? URL}
        .filter { $0.lastPathComponent.first != "." && isMediaFile($0)   
    }
}

func move(files: [URL],to location: URL) {
    do {
        for fileURL in files {
            try fileManager.copyItem(at: fileURL,to: location)
        }
    } catch (let error) {
        print(error)
    }
}


let mediaFilesURL = URL(string: "/Users/xxx/Desktop/Media/")!
let moveToFolder = URL(string: "/Users/xxx/Desktop/NewFolder/")!

let mediaFiles = getMediaFiles(from: mediaFilesURL)

move(files: mediaFiles,to: moveToFolder)