swift 3中的多个复选框按钮

import UIKit

class ViewController: UIViewController {
    var checkBoxButtons = [UIButton]() // 用于存储复选框按钮的数组
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 创建复选框按钮
        createCheckBoxButton(title: "选项1", tag: 0)
        createCheckBoxButton(title: "选项2", tag: 1)
        createCheckBoxButton(title: "选项3", tag: 2)
    }
    
    func createCheckBoxButton(title: String, tag: Int) {
        let checkBoxButton = UIButton(type: .custom)
        checkBoxButton.setImage(UIImage(named: "unchecked"), for: .normal) // 设置未选中状态的图片
        checkBoxButton.setImage(UIImage(named: "checked"), for: .selected) // 设置选中状态的图片
        checkBoxButton.setTitle(title, for: .normal)
        checkBoxButton.setTitleColor(.black, for: .normal)
        checkBoxButton.addTarget(self, action: #selector(checkBoxButtonTapped(_:)), for: .touchUpInside)
        checkBoxButton.tag = tag
        
        // 设置按钮的位置和大小
        checkBoxButton.frame = CGRect(x: 50, y: 100 + tag * 50, width: 200, height: 30)
        
        // 将按钮添加到视图中
        view.addSubview(checkBoxButton)
        
        // 将按钮添加到数组中
        checkBoxButtons.append(checkBoxButton)
    }
    
    @objc func checkBoxButtonTapped(_ sender: UIButton) {
        sender.isSelected = !sender.isSelected // 切换按钮的选中状态
    }
}