如何在重新加载视图控制器后仍然显示progressView的进度？

import UIKit

class MyViewController: UIViewController {
    var progressView: UIProgressView!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 初始化progressView
        progressView = UIProgressView(progressViewStyle: .default)
        progressView.frame = CGRect(x: 0, y: 0, width: view.bounds.width, height: 20)
        view.addSubview(progressView)
        
        // 恢复进度
        restoreProgress()
    }
    
    func updateProgress(_ progress: Float) {
        progressView.progress = progress
        // 保存进度
        UserDefaults.standard.set(progress, forKey: "progressKey")
    }
    
    func restoreProgress() {
        let savedProgress = UserDefaults.standard.float(forKey: "progressKey")
        progressView.progress = savedProgress
    }
}