在Swift中实现复选框

import UIKit

class ViewController: UIViewController {
    var checkBoxButton: UIButton!

    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 创建复选框按钮
        checkBoxButton = UIButton(type: .system)
        checkBoxButton.frame = CGRect(x: 50, y: 50, width: 20, height: 20)
        checkBoxButton.addTarget(self, action: #selector(checkBoxTapped), for: .touchUpInside)
        checkBoxButton.setImage(UIImage(named: "unchecked"), for: .normal)
        checkBoxButton.setImage(UIImage(named: "checked"), for: .selected)
        
        // 将按钮添加到视图中
        view.addSubview(checkBoxButton)
    }
    
    @objc func checkBoxTapped() {
        checkBoxButton.isSelected = !checkBoxButton.isSelected
        
        // 根据选中状态执行相应的操作
        if checkBoxButton.isSelected {
            // 复选框被选中时的操作
            print("复选框被选中")
        } else {
            // 复选框未被选中时的操作
            print("复选框未被选中")
        }
    }
}