如何在Swift中将图像固定到屏幕上？

import UIKit

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        
        let imageView = UIImageView(frame: CGRect(x: 0, y: 0, width: 200, height: 200))
        imageView.image = UIImage(named: "yourImageFileName")  // 替换为你的图像文件名
        imageView.contentMode = .scaleAspectFit
        imageView.center = view.center
        view.addSubview(imageView)
    }
}