OC and Swift mixed key

1. Bridge Connector File--xx-bridge-header.h

Swift and OC mixed connection points are essential. When you add OC or Swift to a swift engineering or OC Project, Xcode alerts are recommended to be added manually.

Note After you introduce the file, Xcode target->build settings automatically adds the Swift Compiler * entry, Objective-c Bridging header entry to fill out this file path (xx/ Xx-bridge-header.h,xx for Project name)

2. Hide header file--xx-swift.h

Essential. When OC tries Swift, Xcode is created by default, and the bridge header file is created and #import "Xx-swift.h" (xx is the project name) in OC file.

3. Usage

OC using #import "Xx-swift.h" in Swift:oc file

Swift uses OC:OC header files written in Xx-bridge-header.h

OC and Swift mixed key