iOS中判断一个URL是否为图片路径

imageURL

    private func imageToAssetURL(url: URL) -> URL?{
        let pathExtention = url.pathExtension as CFString
        let fileUIT = UTTypeCreatePreferredIdentifierForTag(kUTTagClassFilenameExtension, pathExtention, nil)?.takeRetainedValue()
        if (UTTypeConformsTo(fileUIT!, kUTTypeImage)){
            let param = CXEEngineInitParam()
            let movieMaker = CXEImageToVideo(videoWidth:Int(param.sequence.width), videoHeight: Int(param.sequence.height))
            let fileURL = movieMaker.createMovieFrom(url: url, duration: Int(CXPreparetValue.imageDuration))
            return fileURL
        }
        return url
    }