没有隐含按钮的按钮会重新打开弹出窗口

Question

所以基本上我有一个带有预订按钮的预订页面。单击该按钮会弹出一个弹出窗口，并显示一些有关预订的信息。在弹出菜单中有两个按钮“取消”和“确认”。我实现了两者的相同代码都出了问题。我删除了代码以查看结果，没有任何暗示。其中一个无缘无故地重新打开了弹出窗口。

@IBAction func confirmTappedonPopUp(sender: AnyObject) {

}



@IBAction func cancelTappedonPopUp(sender: AnyObject) {


}

@IBAction func reserveTapped(sender: AnyObject) {

    //If there are missing data from user display alert message
    if( selectedBoat==nil  || selectedHour == nil ) {
         displayAlertMessage("All fields are required!");
        return;
    }
    animateIn()
}
func animateIn() {

    self.view.addSubview(reservationPopUpView)

    reservationPopUpView.center = self.view.center
    reservationPopUpView.transform = CGAffineTransformMakeScale(1.3, 1.3)
    reservationPopUpView.alpha = 0
    popUpDateLabel.text = selectedDate
    popUpTimeLabel.text = selectedHour
    popUpBoatTypeLabel.text = selectedBoat


    UIView.animateWithDuration(0.4, animations: {

        self.reservationPopUpView.alpha = 1
        self.reservationPopUpView.transform = CGAffineTransformIdentity
    })

}