目标效果: 点击动画按钮之后每张牌各自旋转 散开到屏幕上半部分的任意位置之后回到初始位置 1: 创建卡牌对象 for _ in 0...49 { let cardSet = UIImageView(image: UIImage(named: "cardBackLandscape")) self.view.addSubview(cardSet) cardSet.frame = self.landscapeCardBack.frame self.cardSetList.append(cardSet) } NSNotificationCenter.defa