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

Posted 2023-02-23

【中文标题】在 SWRevealViewController 的情况下，掩码视图未从超级视图中删除

【英文标题】：Mask view not removed from super view in case of SWRevealViewController

【发布时间】：2016-02-01 09:52:54

【问题描述】：

我正在尝试在我的前视图中添加一个遮罩视图，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)

        


    

我的蒙版视图已添加到超级视图中，但尽管调用了删除块，但并未从超级视图中删除。为什么会这样？

【参考方案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()