Swift version: 5.6
By default Swift generates code that is only available to other Swift code, but if you need to interact with the Objective-C runtime – all of UIKit, for example – you need to tell Swift what to do.
If you just want to expose a single method or property, you can mark that method using the @objc
attribute. However, if you want all methods in a class to be exposed to Objective-C you can use a shortcut: the @objcMembers
keyword:
@objcMembers class MyController: UIViewController {
func login() {
}
}
In that code, the login()
method will automatically be exposed to Objective-C in the same way as if it had been marked with @objc
, because the whole class it’s inside is marked with @objcMembers
.
SPONSORED Join a FREE crash course for mid/senior iOS devs who want to achieve an expert level of technical and practical skills – it’s the fast track to being a complete senior developer! Hurry up because it'll be available only until October 1st.
Sponsor Hacking with Swift and reach the world's largest Swift community!
Available from iOS 8.0
This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.
Link copied to your pasteboard.