- Callback.swift
protocol callbackDelegate{
func callback(callbackData: String)
}
class Callback {
var delegate: callbackDelegate?
func callbackMethod() {
if delegate != nil {
delegate?.callback("HelloWorld")
}
}
}
- ViewController.swift
class ViewController: UIViewController, callbackDelegate {
override func viewDidLoad() {
super.viewDidLoad()
let callback = Callback()
callback.delegate = self
callbck.callbackMethod
}
func callback(callbackData: String) {
print(callbackData)
}
}
