如何在swift中的标签中嵌入自定义按钮？

import UIKit

class ViewController: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 创建一个标签
        let label = UILabel(frame: CGRect(x: 100, y: 100, width: 200, height: 50))
        label.text = "这是一个标签"
        label.textAlignment = .center
        label.backgroundColor = .lightGray
        
        // 创建一个自定义按钮
        let button = UIButton(type: .custom)
        button.frame = CGRect(x: 50, y: 10, width: 100, height: 30)
        button.setTitle("按钮", for: .normal)
        button.setTitleColor(.white, for: .normal)
        button.backgroundColor = .blue
        button.addTarget(self, action: #selector(buttonTapped), for: .touchUpInside)
        
        // 将按钮添加到标签中
        label.addSubview(button)
        
        // 将标签添加到视图中
        view.addSubview(label)
    }
    
    @objc func buttonTapped() {
        print("按钮被点击了")
    }
}