从Swift中的另一个视图访问字符串变量？

class SourceViewController: UIViewController {
    var myString: String = "Hello, World!"
}

class DestinationViewController: UIViewController {
    var receivedString: String?
}

class SourceViewController: UIViewController {
    var myString: String = "Hello, World!"
    
    func navigateToDestination() {
        let destinationVC = DestinationViewController()
        destinationVC.receivedString = myString
        navigationController?.pushViewController(destinationVC, animated: true)
    }
}

class DestinationViewController: UIViewController {
    var receivedString: String?
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        if let string = receivedString {
            print(string) // 输出：Hello, World!
        }
    }
}