iOS Swift手势:如何使用手势链接两个项目

我的视图中有两个按钮。我创建了2个UIPanGestureRecognizer，每个按钮一个。我可以单独移动它们，但我希望当我向右滑动一个按钮时，另一个按钮向左滑动。我真的不知道该怎么做。最佳实践是什么？

@IBAction func button1(_ sender: Any) {}
@IBAction func button2(_ sender: Any) {}

@IBAction func bottomButtonGesture
    (recognizer:UIPanGestureRecognizer) {

    let translation = recognizer.translation(in: self.view)
    if let view = recognizer.view {
        view.center = CGPoint(x:view.center.x + translation.x,
                              y:view.center.y/* + translation.y*/)
    }
    recognizer.setTranslation(CGPoint.zero, in: self.view)
}

@IBAction func topButtonGesture
    (recognizer:UIPanGestureRecognizer) {

    let translation = recognizer.translation(in: self.view)
    if let view = recognizer.view {
        view.center = CGPoint(x:view.center.x - translation.x,
                              y:view.center.y/* + translation.y*/)
    }
    recognizer.setTranslation(CGPoint.zero, in: self.view)
}

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