NSAttributedStringKey给出未解析的标识符错误 [英] NSAttributedStringKey giving an unresolved identifier error

问题描述

我正在按照在线教程来构建杂志类型的iOS应用程序。我正在尝试使用NSAttributedStringKey，但不断收到如下所示的错误。有什么想法？

I'm following an online tutorial to build a magazine type iOS application. I'm attempting to use NSAttributedStringKey but keep getting the error shown below. Any ideas?

这是导致错误的代码行：

This is the line of code that is causing the error:

let attrs = [NSAttributedStringKey.foregroundColor: color, NSAttributedStringKey.font: font] as [NSAttributedStringKey : Any]

推荐答案

这些项目可能是不同版本的Swift。

The projects are probably in different versions of Swift.

在Swift 4中，NSFontAttributeName已被NSAttributedStringKey取代.font。

In Swift 4, NSFontAttributeName has been replaced with NSAttributedStringKey.font.

如此处所述 NSFontAttributeName vs NSAttributedStringKey .font

需要确认它是否适用于低于ios11的版本

Need to confirm will it work in versions less than ios11

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