无法打开文件“"，因为您没有查看权限 [英] The file “ ” couldn’t be opened because you don’t have permission to view it

问题描述

我正在将文件下载到文件夹，并且正在验证代码中确实存在该文件，但是出现上述错误.有人可以帮我弄清楚为什么我没有读取此文件的权限吗?

I am downloading a file to a folder and I am validating that the file is indeed there in the code, but I am getting the above error. Can someone help me figure out why i dont have permissions to read this file?

    let documentsURL = NSSearchPathForDirectoriesInDomains
           (.DocumentDirectory, .UserDomainMask, true)[0]

    let checkValidation = NSFileManager.defaultManager()

    if (checkValidation.fileExistsAtPath(documentsURL))
    {
        print("FILE AVAILABLE");
    }
    else
    {
        print("FILE NOT AVAILABLE");
    }

    print(documentsURL)

    do{
        let data = try String(contentsOfFile: documentsURL as String,
            encoding: NSASCIIStringEncoding)
        print(data)

    }
    catch let error { print(error) }

Error Domain = NSCocoaErrorDomain代码= 257无法打开文件文档"，因为您没有查看权限." UserInfo = {NSFilePath =/var/mobile/Containers/Data/Application/7FA4D6A9-2149-4053-BF08-22E94A00AE34/Documents，NSUnderlyingError = 0x137807200 {Error Domain = NSPOSIXErrorDomain代码= 13权限被拒绝"}}

Error Domain=NSCocoaErrorDomain Code=257 "The file "Documents" couldn’t be opened because you don’t have permission to view it." UserInfo={NSFilePath=/var/mobile/Containers/Data/Application/7FA4D6A9-2149-4053-BF08-22E94A00AE34/Documents, NSUnderlyingError=0x137807200 {Error Domain=NSPOSIXErrorDomain Code=13 "Permission denied"}}

推荐答案

尝试

fileURL.startAccessingSecurityScopedResource()
//...
fileURL.stopAccessingSecurityScopedResource()

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