FinderSync Extension runtime error: The file couldn’t be opened because you don’t have permission to view it

Question

我正在编写一个 FinderSync 扩展程序，用于在上下文菜单中放置一个项目。当我 right-click 时，我希望菜单项的标题根据所选文件的内容而改变。但是，当我尝试使用 Data(contentsOf: selectedUrl) 读取内容时，它会抛出以下错误：

Error Domain=NSCocoaErrorDomain Code=257 "The file “Some File.png” couldn’t be opened because you don’t have permission to view it." UserInfo={NSFilePath=/Users/Shared/MySyncExtension Documents/Some File.png, NSUnderlyingError=0x61800004cf00 {Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted"}}

如果我添加或删除沙盒，这不会改变。

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先前的研究

• The file couldn’t be opened because you don’t have permission to view it
  • 编译器一直设置为默认值
• Read and Write access for FinderSync extension in a sandboxed environment
  • 授权已启用。此外，这会在沙盒关闭的情况下出现。
• "File could not open because you do not have permission to view it." | Official Apple Support Communities
  • 文件的权限说 "everyone" 有 "Read only" 访问权限

Answer 1

问题是沙盒阻止文件访问文件，因此您的应用程序无法打开它。

Read and Write access for FinderSync extension in a sandboxed environment

即使 Finder Sync App Extension 被授予 "User Selected File" 沙箱文件访问权限，用户通过右键单击访问的文件似乎不算 "user-selected".

可能会将用户引导至 select a root directory via an NSOpenPanel via Powerbox, after which all subdirectories can be accessed via a security-scoped bookmark。

也可以使用临时例外授权，但会导致 App Review 问题：

Is there any way to give my sandboxed Mac app read only access to files in ~/Library?

请复制我的 Apple 错误报告，请求允许此行为：

Finder Sync App Extension selectedItemURLs() should receive "User Selected File" Sandbox file access.

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