xcode Objective-C - Swift 类在 Objective-C .h 文件中不可见
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/28244717/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
objective-c - Swift classes are not visible in Objective-C .h file
提问by Oleg
I'm trying to use Swift class in my Objective-C file.
I included "moduleName-Swift.h"file in my SuperViewController.mfile, but when I try to declare a public method in SuperViewController.hwith Swift-classas method parameter, I obviously get an error: "Expected a type"
我正在尝试在我的 Objective-C 文件中使用 Swift 类。我"moduleName-Swift.h"在我的SuperViewController.m文件中包含了文件，但是当我尝试SuperViewController.h使用Swift-classas 方法参数声明一个公共方法时，我显然得到了一个错误："Expected a type"
How can I use swift-classin a header file if I can only include projectModule-Swift.hin .mfiles??
swift-class如果我只能包含projectModule-Swift.h在.m文件中，如何在头文件中使用？
回答by Eyeball
Make sure to put @objc before the swiftclass name.
确保将 @objc 放在swift类名之前。
@objc myclassname { ... }
Also add
还添加
@class myclassname;
in your obj-c header filewhere you want to access the swift class
在您要访问 swift 类的obj-c 头文件中
回答by andrewz
Remember to import the project generated swift header file in your source file, for example #import <MyProjectName-Swift.h>
记得在你的源文件中导入项目生成的swift头文件，例如 #import <MyProjectName-Swift.h>
回答by Sloba
I had the same problem. Adding @class MyClassName in obj-c .h file created the "Receiver 'MyClassName' for class message is a forward declaration" error, so I deleted that and ONLY added the "@objc" before the swift class name, BUT I also had to make sure that the swift class is a subclass of NSObject.
我有同样的问题。在 obj-c .h 文件中添加 @class MyClassName 创建了“类消息的接收器‘MyClassName’是前向声明”错误，所以我删除了它，只在 swift 类名之前添加了“@objc”，但我也有确保 swift 类是 NSObject 的子类。
@objc class MySwiftClass:NSObject { ... }
WITHOUT @class MyClassName in obj-c .h file!
obj-c .h 文件中没有@class MyClassName！
回答by Matt H
I had to use:
我不得不使用：
@obj public class MySwiftClass: NSObject { ... }
@obj public class MySwiftClass: NSObject { ... }
回答by Ronaldo Albertini
I created a class with no subclass, adding @objc and @objcmembers did not work.
After I change do :NSObjectthe entire class turn visible to objective-C
我创建了一个没有子类的类，添加 @objc 和 @objcmembers 不起作用。在我更改后:NSObject，整个班级都对 Objective-C 可见
