以编程方式向UIScrollView Swift 5添加按钮

import UIKit

class ViewController: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 创建UIScrollView实例
        let scrollView = UIScrollView(frame: CGRect(x: 0, y: 0, width: view.frame.width, height: view.frame.height))
        scrollView.contentSize = CGSize(width: view.frame.width, height: view.frame.height * 2) // 设置可滚动范围
        
        // 创建UIButton实例
        let button = UIButton(frame: CGRect(x: 100, y: 100, width: 200, height: 50))
        button.setTitle("按钮", for: .normal)
        button.backgroundColor = UIColor.blue
        
        // 将按钮添加到UIScrollView中
        scrollView.addSubview(button)
        
        // 将UIScrollView添加到视图控制器的视图中
        view.addSubview(scrollView)
    }
}