How do I add a IBAction to a button programmatically in Swift 4?

Question

How do I add a IBAction to a button programmatically?

button.addTarget(self, action: Selector(("buttonAction:")), for: 
.touchUpInside)

func buttonAction(sender: Any) {
    print("test")
}

That gives me an "Thread 1: signal SIGABRT" error.

Answer 1

Swift 4 version:

button.addTarget(self, action: #selector(action(sender:)), for: .touchUpInside)

@objc private func action(sender: Button) {
    print("test")
}