单击按钮显示隐藏的UIImage

import UIKit

class MyViewController: UIViewController {
    let imageView = UIImageView()
    let button = UIButton()

    override func viewDidLoad() {
        super.viewDidLoad()

        // 设置图片
        imageView.image = UIImage(named: "your_image_name")
        imageView.isHidden = true

        // 设置按钮
        button.setTitle("点击显示/隐藏图片", for: .normal)
        button.addTarget(self, action: #selector(buttonTapped), for: .touchUpInside)

        // 添加到视图
        view.addSubview(imageView)
        view.addSubview(button)

        // 设置约束
        imageView.translatesAutoresizingMaskIntoConstraints = false
        button.translatesAutoresizingMaskIntoConstraints = false

        NSLayoutConstraint.activate([
            imageView.centerXAnchor.constraint(equalTo: view.centerXAnchor),
            imageView.centerYAnchor.constraint(equalTo: view.centerYAnchor),
            button.centerXAnchor.constraint(equalTo: view.centerXAnchor),
            button.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor, constant: 20)
        ])
    }

    @objc func buttonTapped() {
        imageView.isHidden.toggle()
    }
}