tvOS按钮更新Uiview内的焦点约束？

@IBOutlet weak var myView: UIView!

override func viewDidLoad() {
    super.viewDidLoad()
    
    // 添加焦点约束
    myView.addConstraint(NSLayoutConstraint(item: myView, attribute: .centerX, relatedBy: .equal, toItem: view, attribute: .centerX, multiplier: 1.0, constant: 0))
    myView.addConstraint(NSLayoutConstraint(item: myView, attribute: .centerY, relatedBy: .equal, toItem: view, attribute: .centerY, multiplier: 1.0, constant: 0))
}

override func didUpdateFocus(in context: UIFocusUpdateContext, with coordinator: UIFocusAnimationCoordinator) {
    if let nextFocusedView = context.nextFocusedView {
        // 更新焦点约束
        myView.removeConstraints(myView.constraints)
        myView.addConstraint(NSLayoutConstraint(item: myView, attribute: .centerX, relatedBy: .equal, toItem: nextFocusedView, attribute: .centerX, multiplier: 1.0, constant: 0))
        myView.addConstraint(NSLayoutConstraint(item: myView, attribute: .centerY, relatedBy: .equal, toItem: nextFocusedView, attribute: .centerY, multiplier: 1.0, constant: 0))
    }
}