当内部按钮触摸时，如何从 Superview 中删除以编程方式创建的子视图？

Posted 2023-02-23

【中文标题】当内部按钮触摸时，如何从 Superview 中删除以编程方式创建的子视图？

【英文标题】：How to remove a programmatically created subview from Superview when button touch up inside?

【发布时间】：2015-09-04 14:34:05

【问题描述】：

我有一个系统，当用户点击另一个按钮（命名为按钮）时，生成新视图（在图片上用蓝色矩形标记）和按钮（用绿色圆圈标记）作为 Superview 的子视图（用红色矩形标记） .他们都以编程方式创建。我可以根据带有操作消息的 button.tag 删除“减号按钮”。问题是如何删除减号按钮旁边的子视图？它也有与减号按钮相同的标签。

下面是我的mainButton IBAction ;

 @IBAction func mainButton(sender: UIButton) 
        drawThem()


        minusButtonY = counter == 0 ? (minusButtonY + 101) :(minusButtonY + 68)
        borderY = counter == 0 ? (borderY + 86) : (borderY + 68)
        counter++
        drawFooter()
        completePaymentView.contentSize = counter > 7 ? (CGSizeMake(500.0, ( borderY ))) : (CGSizeMake(500.0, ( 490.0 )))

            

以及我生成新视图和按钮的方法；

func drawThem() 
      //creating minus button
            let image = UIImage(named: "minus.png") as UIImage?
            let button   = UIButton.buttonWithType(UIButtonType.Custom) as! UIButton
            var mX : CGFloat = 2.0
            var mY : CGFloat = minusButtonY >= 36.0 ? minusButtonY : 36.0

            button.frame = CGRectMake(mX, mY, 22, 22)
            button.setImage(image, forState: .Normal)
            button.tag = Int(counter)
            button.addTarget(self, action:"btnTouched:", forControlEvents:.TouchUpInside)
            completePaymentView.addSubview(button)

            //drawing payment section border
            var x : CGFloat = 43.0
            var y : CGFloat = borderY >= 20.0 ? borderY : 20.0

            let size = CGSize(width: 485 , height: 55)

            let borderView = UIView(frame: CGRect(origin: CGPoint(x: x , y: y), size: size))
            borderView.layer.borderColor = UIColor(red: 0.83, green: 0.85, blue: 0.88, alpha: 1.0).CGColor
            borderView.layer.borderWidth = 2.0
            borderView.layer.cornerRadius = 5.0
            borderView.tag = counter
            completePaymentView.addSubview(borderView)

            //drawing UIImage and Labels into border
            let imageName = "circle.png"
            let thumb = UIImage(named: imageName)
            let imageView = UIImageView(image: thumb!)
            imageView.frame = CGRect(x: 14, y: 8, width: 55, height: 35)
            borderView.addSubview(imageView)


            let label1 = UILabel(frame: CGRect(x: 85, y: 20, width: 100, height: 18)) as UILabel
           label1.text = "Some Text"
           label1.textColor = UIColor(red: 0.49, green: 0.54, blue: 0.6, alpha: 1.0)
           label1.font = label1.font.fontWithSize(14.0)
           label1.textAlignment = .Left
            borderView .addSubview(label1)

            let label2 = UILabel(frame: CGRect(x: 370, y: 20, width: 100, height: 18)) as UILabel
            label2.text = "Some Text"
            label2.textColor = UIColor(red: 0.49, green: 0.54, blue: 0.6, alpha: 1.0)
            label2.font = label2.font.fontWithSize(14.0)
            label2.textAlignment = .Right
            borderView .addSubview(label2)


        

和下面的目标操作；

func btnTouched(button : UIButton)

    button.removeFromSuperview()

【问题讨论】：

通过tag找到它 - 互联网上有很多例子。

【参考方案1】：

在 btnTouched 方法中添加以下内容。实际上我正在搜索所有子视图以找到标签。

for view in self.view.subviews as! [UIView] 
    if view.tag == button.tag 
    view.removeFromSuperview()

  

【讨论】：

行了！我刚刚根据我的代码将 self.view.subviews 更改为 self.completePaymentView.subviews 并且得到了！谢谢。