Ios 快速多底单

我已经使用其他人在这里提供的教程实现了一个底部工作表。一切都进行得很顺利，但是我想实现一个位于该底部工作表之上的底部工作表，以及可能位于前一个底部工作表之上的多个其他底部工作表。我想实现这一点，就像ios10地图的底图一样。i、 e.如果一张底纸叠在另一张底纸上，您只需按左上角的“x”即可将其关闭

这是我目前的代码：

在我的地图视图控制器中，我添加了：

func addBottomSheetView() {
    // 1- Init bottomSheetVC
    let bottomSheetVC = BottomSheetViewController()

    // 2- Add bottomSheetVC as a child view 
    self.addChildViewController(bottomSheetVC)
    self.view.addSubview(bottomSheetVC.view)
    bottomSheetVC.didMoveToParentViewController(self)

    // 3- Adjust bottomSheet frame and initial position.
    let height = view.frame.height
    let width  = view.frame.width
    bottomSheetVC.view.frame = CGRectMake(0, self.view.frame.maxY, width, height)
}

override func viewDidLoad() {
    super.viewDidLoad()

    let gesture = UIPanGestureRecognizer.init(target: self, action:   #selector(BottomSheetViewController.panGesture))
    view.addGestureRecognizer(gesture)

}

func panGesture(recognizer: UIPanGestureRecognizer) {
    let translation = recognizer.translationInView(self.view)
    let y = self.view.frame.minY
    self.view.frame = CGRectMake(0, y + translation.y, view.frame.width,        view.frame.height)
      recognizer.setTranslation(CGPointZero, inView: self.view)
    }

override func viewDidAppear(animated: Bool) {
    super.viewDidAppear(animated)

     UIView.animateWithDuration(0.3) { [weak self] in
         let frame = self?.view.frame
         let yComponent = UIScreen.mainScreen().bounds.height - 200
         self?.view.frame = CGRectMake(0, yComponent, frame!.width,   frame!.height)
    }
}

并在ViewDidDisplay方法中调用它：

override func viewDidAppear(animated: Bool) {
      super.viewDidAppear(animated)
      addBottomSheetView()
}

在我的底部板材控制器中，我添加了：

func addBottomSheetView() {
    // 1- Init bottomSheetVC
    let bottomSheetVC = BottomSheetViewController()

    // 2- Add bottomSheetVC as a child view 
    self.addChildViewController(bottomSheetVC)
    self.view.addSubview(bottomSheetVC.view)
    bottomSheetVC.didMoveToParentViewController(self)

    // 3- Adjust bottomSheet frame and initial position.
    let height = view.frame.height
    let width  = view.frame.width
    bottomSheetVC.view.frame = CGRectMake(0, self.view.frame.maxY, width, height)
}

override func viewDidLoad() {
    super.viewDidLoad()

    let gesture = UIPanGestureRecognizer.init(target: self, action:   #selector(BottomSheetViewController.panGesture))
    view.addGestureRecognizer(gesture)

}

func panGesture(recognizer: UIPanGestureRecognizer) {
    let translation = recognizer.translationInView(self.view)
    let y = self.view.frame.minY
    self.view.frame = CGRectMake(0, y + translation.y, view.frame.width,        view.frame.height)
      recognizer.setTranslation(CGPointZero, inView: self.view)
    }

override func viewDidAppear(animated: Bool) {
    super.viewDidAppear(animated)

     UIView.animateWithDuration(0.3) { [weak self] in
         let frame = self?.view.frame
         let yComponent = UIScreen.mainScreen().bounds.height - 200
         self?.view.frame = CGRectMake(0, yComponent, frame!.width,   frame!.height)
    }
}

最初，我想在新的底部工作表中添加子视图，但是这不起作用。是否应将子视图添加到原始地图视图控制器？添加新底部图纸的按钮位于现有底部图纸中。我想听听你的建议。谢谢