NSCocoaErrorDomain Code=257 文件无法打开，因为您没有权限查看它：FileManager attributesOfItem returns nil in iOS13

Question

FileManager returns 尝试获取文件大小时出现权限错误，在 iOS 13 台设备中。

do {
    let attr = try FileManager.default.attributesOfItem(atPath: my_file_path) //--> Getting nil
    fileSize = attr[FileAttributeKey.size] as! UInt64
} catch {
    print("Error: \(error)")
}

返回错误：

Error Domain=NSCocoaErrorDomain Code=257 "The file “trim.1A9FFC19-EE2C-438A-BF3D-97E05A97EF9E.MOV” couldn’t be opened because you don’t have permission to view it." UserInfo={NSFilePath=/private/var/mobile/Containers/Data/PluginKitPlugin/ADB8684E-12B5-451D-A20F-158B899BB3DD/tmp/trim.1A9FFC19-EE2C-438A-BF3D-97E05A97EF9E.MOV, NSUnderlyingError=0x280af0510 {Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted"}}

这个问题是我更新到iOS13后才发现的。在早期版本中一切正常。

Answer 1

iOS 13 SDK 将照片应用程序视为另一个应用程序，因此当我们关闭图像选择器控制器时，视频 url 将失效。

我之前在尝试将视频上传到 AWS 时遇到过问题，我所做的只是创建一个临时文件夹并复制现有视频 url 路径，然后关闭它上传的 Image-picker.then , 成功了。

    func createDirectory(videoURL:URL){
            let Directorypath = getDirectoryPath()
            var objcBool:ObjCBool = true
            let isExist =  FileManager.default.fileExists(atPath:Directorypath,isDirectory: &objcBool)
            // If the folder with the given path doesn't exist already, create it
            if isExist == false{
                do{
                    try FileManager.default.createDirectory(atPath: Directorypath, withIntermediateDirectories: true, attributes: nil)
                }catch{

                    print("Something went wrong while creating a new folder")
                }
            }
            let fileManager = FileManager()

            do {
                if fileManager.fileExists(atPath:Directorypath) {
                    try? fileManager.removeItem(at: URL(fileURLWithPath:Directorypath))
                }
                try fileManager.copyItem(at:videoURL.absoluteURL, to: URL(fileURLWithPath:Directorypath))

                 self.imagePicker.dismiss(animated: true, completion:nil)
              }catch let error {
                              print(error.localizedDescription)
              }

   }

NSCocoaErrorDomain Code=257 文件无法打开，因为您没有权限查看它：FileManager attributesOfItem returns nil in iOS13

NSCocoaErrorDomain Code=257 file couldn’t be opened because you don’t have permission to view it : FileManager attributesOfItem returns nil in iOS13

swift

nsfilemanager

ios13

xcode11