如何在iPhone中从左到右动画视图？

// 创建当前显示的视图和将要显示的视图
let currentView = UIView(frame: CGRect(x: 0, y: 0, width: screenWidth, height: screenHeight))
let nextView = UIView(frame: CGRect(x: -screenWidth, y: 0, width: screenWidth, height: screenHeight))

// 将要显示的视图添加到当前视图的后面
currentView.addSubview(nextView)

// 执行动画
UIView.animate(withDuration: 0.5, animations: {
    // 当前视图移动到屏幕右侧
    currentView.frame.origin.x = screenWidth
    
    // 将要显示的视图移动到屏幕中央
    nextView.frame.origin.x = 0
}) { (_) in
    // 动画完成后更新当前视图为将要显示的视图
    currentView.removeFromSuperview()
    self.view.addSubview(nextView)
    nextView.frame.origin.x = -screenWidth
}