在SWRevealViewController的情况下，掩码视图未从超级视图中删除

Question

我正在尝试在我的前视图中添加一个蒙版视图，以防我的后视图出现并且我已经为它编写了以下代码 -

func revealController(revealController: SWRevealViewController!, willMoveToPosition position: FrontViewPosition) {

     var maskView = UIView(frame: self.view.bounds)
      maskView.backgroundColor = UIColor.grayColor()
       maskView.alpha = 0.5
        maskView.addGestureRecognizer(self.revealViewController().panGestureRecognizer())
      maskView.addGestureRecognizer(self.revealViewController().tapGestureRecognizer())
        if revealController.frontViewPosition == FrontViewPosition.Right
        {
          maskView.removeFromSuperview()//this block is called but mask view is not being removed.
          //maskView.hidden = true
          print("asdvf")

        }

        else if revealController.frontViewPosition == FrontViewPosition.Left
        {
            self.view.addSubview(maskView)

        }


    }

我的掩码视图被添加到超级视图中，但是除非调用了删除块，否则不会从超级视图中删除。为什么这样？

Answer 1

func revealController(_ revealController: SWRevealViewController!, didMoveTo position: FrontViewPosition) {
    if(position == FrontViewPosition.right) {

        let maskView = UIView(frame: self.view.frame)
        maskView.backgroundColor = UIColor.clear
        maskView.translatesAutoresizingMaskIntoConstraints = false
        let tap = UITapGestureRecognizer(target: revealController, action: #selector(SWRevealViewController.revealToggle(_:)))
        maskView.addGestureRecognizer(tap)
        maskView.addGestureRecognizer(revealController.panGestureRecognizer())
        maskView.tag = 1000
        revealController.frontViewController.view.addSubview(maskView)
        maskView.sizeToFit()
    } else {
          revealController.frontViewController.view.viewWithTag(1000)?.removeFromSuperview()
    }
}