读取文件权限的问题Swift＆amp; Firebase - 移动而非模拟器

Question

我正在尝试从访问用户视频的自定义UICollection上传视频。当我尝试将URL上传到firebase时，出现以下错误：

Body file is unreachable: /var/mobile/Media/DCIM/103APPLE/IMG_3002.MOV
  Error Domain=NSCocoaErrorDomain Code=257 "The file “IMG_3002.MOV” couldn’t be opened because you don’t have permission to view it." UserInfo={NSURL=file:///var/mobile/Media/DCIM/103APPLE/IMG_3002.MOV, NSFilePath=/var/mobile/Media/DCIM/103APPLE/IMG_3002.MOV, NSUnderlyingError=0x17024b790 {Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted"}}

我有点困惑为什么会发生这种情况，当我打印出我得到的视频的网址时b / c：

file:///var/mobile/Media/DCIM/103APPLE/IMG_3002.MOV

＆安培;＆安培;我的info.plist看起来像这样

以下是上传代码：

videosFolder.child("\(nsuid).mov").putFile(self.videoURLToUpload, metadata: nil, completion: { (metadata, error) in
                if error != nil {
                    print("we Had an Error!: \(String(describing: error))")
                } else {
                    print("we uploaded the video correctly!!!")
                }
            })

＆安培;＆安培;只是在这里是我提取视频的地方

struct Media {
    var image:UIImage?
    var videoURL:NSURL?
}

var mediaArray = [Media]()

func grabPhotos(){
    let imgManager = PHImageManager.default()

    let requestOptions = PHImageRequestOptions()
    requestOptions.isSynchronous = true
    requestOptions.deliveryMode = .highQualityFormat

    let fetchOptions = PHFetchOptions()
    fetchOptions.sortDescriptors = [NSSortDescriptor(key: "creationDate", ascending: false)]
    if let fetchResult : PHFetchResult = PHAsset.fetchAssets(with: .video, options: fetchOptions) {


        if fetchResult.count > 0 {
            for i in 0..<fetchResult.count{
                var mediaItem = Media()
                //Used for fetch Image//
                imgManager.requestImage(for: fetchResult.object(at: i) as PHAsset , targetSize: CGSize(width: 400, height: 400), contentMode: .aspectFit, options: requestOptions, resultHandler: {
                    image, error in
                    let imageOfVideo = image! as UIImage
                    mediaItem.image = imageOfVideo;
                    //Used for fetch Video//
                    imgManager.requestAVAsset(forVideo: fetchResult.object(at: i) as PHAsset, options: PHVideoRequestOptions(), resultHandler: {(avAsset, audioMix, info) -> Void in
                        if let asset = avAsset as? AVURLAsset {
                            let videoData = NSURL(string: "\(asset.url)")
                            let duration : CMTime = asset.duration
                            let durationInSecond = CMTimeGetSeconds(duration)
                            print(durationInSecond)
                            mediaItem.videoURL = videoData!
                            self.mediaArray.append(mediaItem)
                            print(self.mediaArray.count)


                        }

                    })
                })
            }

        }
        else{
            //showAllertToImportImage()//A function to show alert
        }
    }
}

此问题出现在手机而不是模拟器上