Question

我正在尝试使用for循环将一系列视频保存到文档目录和图库，但是文档目录仅保存了最后一个视频，而图库已保存了所有视频而没有问题。

任何想法如何解决？感谢您的输入！

func saveVideoToGallery(videoUrl: String) {

 //currently a URL placeholder
    let videoMainUrl = 
 "https://dev.server.com/storage/sessions/0001/imports/"
    let videoUrlPicked = String(videoMainUrl + videoUrl)

    let mainPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0];
    let folderPath = mainPath + "/ImportVideo"
    var objCBool:ObjCBool = true


    // Create Directory Folder if  doesn't exists
    let isExist = FileManager.default.fileExists(atPath: folderPath, isDirectory: &objCBool)
    if !isExist {
        do {
            try FileManager.default.createDirectory(atPath: folderPath, withIntermediateDirectories: true, attributes: nil)
        } catch {
            print("error")
        }
    }

    DispatchQueue.global(qos: .background).async {
        if let url = URL(string: videoUrlPicked),
            let urlData = NSData(contentsOf: url) {
            let documentsPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0];
            let fileName = String(self.videoURL)
            let filePath = "\(documentsPath + "/ImportVideo")" + fileName

  //Save the video file to directory folder "ImportVideo"
            urlData.write(toFile: filePath, atomically: true)

        DispatchQueue.main.async {

    //Save to the gallery
           PHPhotoLibrary.shared().performChanges({
                    PHAssetChangeRequest.creationRequestForAssetFromVideo(atFileURL: URL(fileURLWithPath: filePath))
                }) { completed, error in
                    if completed {
                        print("Video is saved to gallery")
                    }
                }
           }
        }

    }
}

用于循环

videoList = videoArray()

    for videos in videoList {

        saveVideoToGallery(videoUrl: videos)
    }

Answer 1

在这些行中看起来像是问题。

let fileName = String(self.videoURL)
let filePath = "\(documentsPath + "/ImportVideo")" + fileName

基本上，您使用相同的fileName覆盖了视频，因为每次都需要一些全局范围变量self.videoURL时，我看不到任何链接。尝试使用UUID字符串为不同的视频生成唯一的文件名

let fileName = UUID().uuidString

Swift-视频文件数组可以很好地保存到应用程序库中，但不能正确地保存到应用程序文档目录中

1 个答案: