ios - Swift - 如果在 View 外部触摸则隐藏 View

Question

我目前正在为我的应用编写日历系统。我已经使用 UIButton 和我创建的 toogleCalendar() 函数显示/隐藏日历。

I would like to hide the Calendar when the calendar is displayed and if the user touch outside of it.

类似的东西:

如果我点击日历以外的地方，日历就会消失。

我试图插入一个 subview 并在其上添加一个 GestureRecognizer，但它不起作用。

你知道我该怎么做吗？

这是切换函数:

func toggleCalendar(){
      if !calendarIsHidden {
         calendarIsHidden = true

         UIView.animate(withDuration: 0.2, animations: {
            self.shadowCalendarView.transform = CGAffineTransform(scaleX: 0.95, y: 0.95)
            self.shadowCalendarView.alpha = 0
         }) { (finish) in
            if finish {
               self.shadowCalendarView.isHidden = self.calendarIsHidden
            }
         }

      } else {

         calendarIsHidden = false
         self.shadowCalendarView.isHidden = self.calendarIsHidden

         UIView.animate(withDuration: 0.2, animations: {
            self.shadowCalendarView.transform = .identity


            self.shadowCalendarView.alpha = 1

         }) { (finish) in
            // Nothing for now
         }

      }

}

Answer 1

将 UITapGestureRecognizer 添加到您的 self.view 和 UITapGestureRecognizer 构造函数的 action 部分中将输入一个函数，您将在其中呈现用于检查您的日历是否呈现/启用并可以进一步隐藏它的逻辑。

let mytapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(handleTap(_:)))
self.view.addGestureRecognizer(mytapGestureRecognizer)
self.isUserInteractionEnabled = true

func handleTap(_ sender:UITapGestureRecognizer){

  if !calendarIsHidden {
   calendarIsHidden = true

   //Hide the calendar here

  }
  else {
   calendarIsHidden = false

   // Show the Calendar Here
  }

}