我正在编写一个FinderSync扩展，将一个项目放在上下文菜单中。右键单击时，我希望菜单项的标题根据所选文件的内容进行更改。但是，当我尝试使用Data(contentsOf:selectedUrl)读取内容时，它会抛出以下错误:ErrorDomain=NSCocoaErrorDomainCode=257"Thefile“SomeFile.png”couldn’tbeopenedbecauseyoudon’thavepermissiontoviewit."UserInfo={NSFilePath=/Users/Shared/MySyncExtensionDocuments/SomeFi

我正在尝试为Swift/Cocoa中的FinderSync扩展创建级联子菜单。我有以下代码:overridefuncmenuForMenuKind(menuKind:FIMenuKind)->NSMenu!{letm=NSMenu(title:"")letmi1=NSMenuItem(title:"item1",action:nil,keyEquivalent:"")letmi11=NSMenuItem(title:"item11",action:nil,keyEquivalent:"")letm2=NSMenu(title:"")letmi2=NSMenuItem(title:"it

我正在尝试为Swift/Cocoa中的FinderSync扩展创建级联子菜单。我有以下代码:overridefuncmenuForMenuKind(menuKind:FIMenuKind)->NSMenu!{letm=NSMenu(title:"")letmi1=NSMenuItem(title:"item1",action:nil,keyEquivalent:"")letmi11=NSMenuItem(title:"item11",action:nil,keyEquivalent:"")letm2=NSMenu(title:"")letmi2=NSMenuItem(title:"it