Within the project Swift and OC cross-use

• Using swift language development in OC projects

1. Create a swift file while creating a bridging file. (The bridge file does not have to import the header file)
2. Complete the code in the swift file.
3. In a. m file of an OC class, use the Swift file. Method #import "OC Project Product name-swift.h" < fixed, do not write >
4. Once the header file is imported successfully, you can use the Swift class in the OC class

　

• Using OC language development in Swift projects

1. Create an OC file while creating a bridging file
2. Import the header file of the OC class that you need to use in the Swift class in the bridge file, for example: #import "OCTestClass.h"

3. When the above two steps are complete, you can use the OC class directly in the Swift class without the import header file operation

Within the project Swift and OC cross-use