The most universal solution is to change SWIFT_OBJC_INTERFACE_HEADER_NAME
(“Objective-C Generated Interface Header Name”) under Project’s, not Targets, Build Settings, to:
$(PROJECT_NAME)-Swift.h
— one per project;$(SWIFT_MODULE_NAME)-Swift.h
— one per module (default value).
Then import the Project Header, example:
#import MyProjectName-Swift.h