How to create an Objective-C bridging header to use code in Swift
Swift version: 5.1
If you want to use Objective-C code in your Swift app – and let's face it, that's going to happen quite a lot! – then you need to create a bridging header that allows your Swift code to work with your Objective-C code.
To create an Objective-C bridging header file, all you need to do is drag some Objective-C code into your Swift project – Xcode should prompt you with the message "Would you like to configure an Objective-C bridging header?" Click "Creating Bridging Header" and you'll see a file called YourProjectName-Bridging-Header.h appear in your project.
But that's only half the problem: Xcode has created the bridging header and modified your build settings so that it gets used, but it hasn't actually put anything into it. If you want to start using your Objective-C code in Swift, you need to add import lines to that bridging header file, like this:
#import "YourFile.h"You can add as many of these as you want, and indeed you'll want to import all the Objective-C code you want to use in Swift.
LEARN SWIFTUI FOR FREE I have a massive, free SwiftUI video collection on YouTube teaching you how to build complete apps with SwiftUI – check it out!
Available from iOS 7.0
Similar solutions…
- How to fix “argument of #selector refers to instance method that is not exposed to Objective-C”
- How to create live playgrounds in Xcode
- SwiftUI tips and tricks
- How to add drag and drop to your app
- How to use Instruments to profile your SwiftUI code and identify slow layouts
About the Swift Knowledge Base
This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.
