如何以编程方式切换uiswitch按钮

import UIKit

class ViewController: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()

        let switchControl = UISwitch()
        switchControl.center = view.center
        switchControl.addTarget(self, action: #selector(switchChanged(_:)), for: .valueChanged)
        view.addSubview(switchControl)
    }

    @objc func switchChanged(_ sender: UISwitch) {
        if sender.isOn {
            print("UISwitch is on")
        } else {
            print("UISwitch is off")
        }
    }
}