使用UIAlertController的CocoaAction /操作

import UIKit
import ReactiveCocoa
import ReactiveSwift

class ViewController: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
        
        let alertController = UIAlertController(title: "标题", message: "消息内容", preferredStyle: .alert)
        
        let cancelAction = UIAlertAction(title: "取消", style: .cancel, handler: nil)
        let okAction = UIAlertAction(title: "确定", style: .default, handler: nil)
        
        alertController.addAction(cancelAction)
        alertController.addAction(okAction)
        
        let cocoaAction = CocoaAction { _ in
            // 处理确定按钮点击事件
            // 可以在这里执行相应的操作，如发送网络请求、更新UI等
            return SignalProducer(value: ())
        }
        
        okAction.reactive.trigger(for: .touchUpInside).observeValues { _ in
            cocoaAction.apply().start()
        }
        
        present(alertController, animated: true, completion: nil)
    }
}