是否可以从objective-c文件中访问Swift全局变量？ [重复]

This question already has an answer here:

这个问题在这里已有答案：

• how to declare a constant in swift that can be used in objective c 5 answers
• 如何在swift中声明一个可用于目标c 5答案的常量

I am working on a project where I must extend an objective-c application with some Swift code. So I need to access the Swift code from an .m file.

我正在开发一个项目，我必须使用一些Swift代码扩展一个objective-c应用程序。所以我需要从.m文件中访问Swift代码。

I imported the generated Swift.h file and now I have access to the methods, but not to the global variables.

我导入了生成的Swift.h文件，现在我可以访问这些方法，但不能访问全局变量。

Is it possible to do that?

有可能吗？

Thanks!

谢谢！

1 个解决方案

#1

According to Apple's docs on Swift and Objective-C type compatibility the answer is no:

根据Apple关于Swift和Objective-C类型兼容性的文档，答案是否定的：

When you create a Swift class that descends from an Objective-C class, the class and its members—properties, methods, subscripts, and initializers—that are compatible with Objective-C are automatically available from Objective-C. This excludes Swift-only features, such as those listed here:

当您创建一个源自Objective-C类的Swift类时，可以从Objective-C自动获得与Objective-C兼容的类及其成员属性，方法，下标和初始化程序。这不包括仅限Swift的功能，例如此处列出的功能：

• Generics
• 泛型
• Tuples
• 元组
• Enumerations defined in Swift without Int raw value type
• 在没有Int原始值类型的Swift中定义的枚举
• Structures defined in Swift
• Swift中定义的结构
• Top-level functions defined in Swift
• Swift中定义的*函数
• Global variables defined in Swift
• Swift中定义的全局变量
• Typealiases defined in Swift
• 在Swift中定义的Typealiases
• Swift-style variadics
• Swift风格的可变参数
• Nested types
• 嵌套类型
• Curried functions
• 咖喱功能