Enter Swfit (iii) Swift calls OC

To invoke a custom OC or open source package in Swift, just do the next bridge, create a file with the project name-bridging-header.h file,. h files can import the files you want, like the OC, and then build In the settings objective-c bridging header, in the place of its value, fill in the header file you created yourself.

1. You can drag the corresponding header file into the input box that fills in the value

2. Manually fill in the header file path to the input box, such as: jokermost/swift-objectivec-bridge.h

In fact, #define can also be achieved in this area.

In Swift development, a Uicollectionviewcell subclass was created: Exhibitioncell, "No such module ' Cocoa ' Error occurred:

The reason is simple: when you create a new file, you choose an OS X project, and you should actually select the IOS project. So delete the error file and recreate a new file file, the problem is solved. Reference