我需要在objective-c 中使用swift 类并且无法设置我的Emilos-Swift.h 桥接文件来解析objective-c 中的任何swift 类

Question

Cannot get Xcode to generate the bridging file so it's currently empty and cannot find any guide/docs on what needs to be in the file. The empty bridging file is being imported in the .m where the class is needed. Swift file using @objcmembers on class definition.

How and what should go into the bridging file. Have looked for two days trying to make this work with no success.

Is there a way to turn back on the automatic generation of the bridging file in Xcode? Any docs on the contents of the bridging file?

Answer 1

Don't confuse the two kinds of header. The "bridging header" is for Swift to see Objective-C code. It isn't relevant here.

The way Objective-C sees Swift code is through the generated interface header . You can see its name in your app target build settings:

So what that tells you is that if you #import "MomApp2-Swift.h" in your .m file, your Objective-C code will see your code that is exposed from Swift.

If you want to see what is in that generated interface header, then after you've done that import, Command-click on the file name.

Answer 2

To use a Swift class on objective-c you need to be sure that your class inherits from NSObject , has an @objc annotation on class definition and other elements that you want to use need to be marked with @objc . @objcmembers marks all elements visible from an Objc class located on file that imports the "project-Swift.h"

You may not need all class members visible from Objective-c