It takes four steps to call Swift from iOS OC
first step
Build Settings->Defines Module is set to YES
MOdule Name Configure project name
Second step
Drag swift into the project, you will be prompted whether to create a bridge file, select Create
Non-drag-in, there is no prompt to manually create and select the header file
Name XXXX-Bridging-Header [XXXX represents the name of the project]
third step
Build Settings->Bridging
Drag the bridge file into the path
the fourth step
Build Settings-> Swift Language Version select the version (the version depends on which version of swift you are)
Introduce in classes that need to use Swift methods
#import “XXXX-Swift.h" [XXXX represents the project name]
Welcome to follow the official account [Swift Community]:
