如何阅读文件注释字段 [英] How to read file comment field

问题描述

在OS X Finder中，具有注释"文件属性.可以在查找器中通过添加注释"列进行检查，或者在右键单击文件或文件夹并选择获取信息"后进行编辑/检查.

如何用swift或Objective-C读取此值?

我已经检查了NSURL，但似乎都不是正确的

In OS X Finder there is 'Comment' file property. It can be checked in finder by adding 'Comment' column or edited/checked after right clicking on file or folder and selecting 'Get info'.

How to read this value in swift or objective-c?

I checked already NSURL and none of them seems to be the right ones

推荐答案

请勿使用低级扩展属性API来读取Spotlight元数据.有一个合适的Spotlight API. (这称为文件元数据API.)这不仅使人痛苦不堪，而且不能保证Apple会继续使用相同的扩展属性来存储此信息.

Do not use the low-level extended attributes API to read Spotlight metadata. There's a proper Spotlight API for that. (It's called the File Metadata API.) Not only is it a pain in the neck, there's no guarantee that Apple will keep using the same extended attribute to store this information.

使用MDItemCreateWithURL()为文件创建MDItem.将MDItemCopyAttribute()与kMDItemFinderComment结合使用，以获取该项目的Finder注释.

Use MDItemCreateWithURL() to create an MDItem for the file. Use MDItemCopyAttribute() with kMDItemFinderComment to obtain the Finder comment for the item.

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