如何在Swift 中创建移动的uil标签

我添加了一个标签，并在单击按钮时使标签移动. 它的效果很好，直到一 但是，如果创建第二个标签，则创建的第一个标签将返回其原始位置. 我可以在维护现有位置的同时创建新标签吗？

    @IBAction func btnTextAction(_ sender: UIButton) {
        let label = UILabel()
        label.text = "Hello"
        label.textColor = .black
        label.textAlignment = .center
        label.translatesAutoresizingMaskIntoConstraints = false
        vMain.addSubview(label)

        NSLayoutConstraint.activate([
            label.centerXAnchor.constraint(equalTo: vMain.centerXAnchor),
            label.centerYAnchor.constraint(equalTo: vMain.centerYAnchor),
        ])
        
        let panGestureRecognizer = UIPanGestureRecognizer(target: self, action: #selector(handlePanGesture(_:)))
        label.addGestureRecognizer(panGestureRecognizer)
        label.isUserInteractionEnabled = true
        
    }
    
    @objc func handlePanGesture(_ sender: UIPanGestureRecognizer) {
        guard sender.view != nil else { return }

        let translation = sender.translation(in: view)
        
        sender.view!.center = CGPoint(x: sender.view!.center.x + translation.x, y: sender.view!.center.y + translation.y)
        sender.setTranslation(CGPoint.zero, in: view)
    }