Question

我的代码是： func PickUpCarCost（）{

        imgCheck.image = UIImage(named: "uncheck.png")
        imgUnCheck.image = UIImage(named: "uncheck.png")
        if CarPickUpButton?.tag == 1 {
            imgCheck.image = UIImage(named: "check.png")
           self.pickupChargelabel.text=self.PickUpFare.text!
        }
        else {
            imgUnCheck.image = UIImage(named: "uncheck.png")

        }

}

在这个我想要拿bool就像按钮选择图像视图图像将是check.png如果取消选择图像视图图像将uncheck.png如何在swift中为此编码。

Answer 1

你可以选择变量。并为按钮状态添加不同的图像。

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        <div class="update-info"><a href="#">commented</a> 1 hour ago in <a href="#">Plugins</a> by
            <a href="#">gurjyot</a>
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Answer 2

在此按钮上添加UITapGestureRecognizer。或者您可以使用 UIButton 自己的属性isSelected？

@IBOutlet weak var myBtn: UIButton!

在 Viewdidload 方法中添加以下行

let tapGesture = UITapGestureRecognizer(target: self, action: "handleTap")  

myBtn.addGestureRecognizer(tapGesture)

func handleTap(sender: UITapGestureRecognizer) {

  if sender.state == .ended {
      // handling code
  }
  else if sender.state == .began {

  }
}

根据您的需要添加手势。我使用了长按并轻按手势

Answer 3

这段代码对我有用。全球定义var isclick = false

 func CarDeliverCost() {
        if (!isclick){

            imgUnCheck.image = UIImage(named: "check.png")
            isclick=true



        }
        else
        {
            imgUnCheck.image = UIImage(named: "uncheck.png")
            isclick=false



        }
    }

我想在按钮上使用bool，如果我点击imageview的按钮图像改变了，如果再次单击按钮然后使用Swift反转图像

3 个答案: