如何动态创建多个按钮并处理其各自的事件？+ iPhone SDK

import UIKit

override func viewDidLoad() {
    super.viewDidLoad()

    let numberOfButtons = 5

    for i in 1...numberOfButtons {
        let button = UIButton(type: .system)
        button.frame = CGRect(x: 20, y: 20 + (i * 50), width: 100, height: 40)
        button.setTitle("Button \(i)", for: .normal)
        button.addTarget(self, action: #selector(buttonTapped(_:)), for: .touchUpInside)
        button.tag = i
        view.addSubview(button)
    }
}

@objc func buttonTapped(_ sender: UIButton) {
    let buttonNumber = sender.tag
    print("Button \(buttonNumber) tapped")
}