Swift method not visible in objective C

Question

I have project using Swift 3.2 and Objective-C compiling with Xcode Version 9.0 (9A235). It compiles fine in Swift 3.2. However, when I switch to Swift 4.0, the methods declared in Swift is no longer visible in Objective-C. The error is No visible @interface "UserAPI" declares the selector ...

Answer 1

You should add @objc before your function like this.

@objc func doSomething() {
   //Some code goes here
}