如何使UIImageView可轻敲并使其执行某些操作？（迅速）

一尘不染

如何使UIImageView可轻敲并使其执行某些操作？（迅速）

swift

（几天前我才刚开始使用Swift，并且对编程还是比较陌生的，所以请耐心等待。）我试图使随机块出现在屏幕上，并且用户必须点按它们以使其消失。我已经能够创建块，但是我不知道如何使它们真正可轻敲。有人可以帮帮我吗？到目前为止，这是我的代码：

func createBlock(){

    let imageName = "block.png"
    let image = UIImage(named: imageName)
    let imageView = UIImageView(image: image!)

    imageView.frame = CGRect(x: xPosition, y: -50, width: size, height: size)
    self.view.addSubview(imageView)



    UIView.animateWithDuration(duration, delay: delay, options: options, animations: {

        imageView.backgroundColor = UIColor.redColor()

        imageView.frame = CGRect(x: self.xPosition, y: 590, width: self.size, height: self.size)

        }, completion: { animationFinished in


            imageView.removeFromSuperview()


    })



}

编辑： 这是我正在尝试的新代码：

func createBlock(){


    let imageName = "block.png"
    let image = UIImage(named: imageName)
    let imageView = UIImageView(image: image!)

    imageView.frame = CGRect(x: xPosition, y: -50, width: size, height: size)
    self.view.addSubview(imageView)

    imageView.userInteractionEnabled = true
    let tapRecognizer = UITapGestureRecognizer(target: self, action: Selector("imageTapped"))
    imageView.addGestureRecognizer(tapRecognizer)

    func imageTapped(gestureRecognizer: UITapGestureRecognizer) {
        let tappedImageView = gestureRecognizer.view!
        tappedImageView.removeFromSuperview()
        score += 10
    }



    UIView.animateWithDuration(duration, delay: delay, options: options, animations: {

        imageView.backgroundColor = UIColor.redColor()
        imageView.frame = CGRect(x: self.xPosition, y: 590, width: self.size, height: self.size)

        }, completion: { animationFinished in


            imageView.removeFromSuperview()


    })



}

阅读 273

2020-07-07

共1个答案

一尘不染

创建视图后，需要将其userInteractionEnabled属性设置为true。然后，您需要向其附加手势。

imageView.userInteractionEnabled = true
//now you need a tap gesture recognizer
//note that target and action point to what happens when the action is recognized.
let tapRecognizer = UITapGestureRecognizer(target: self, action: Selector("imageTapped:"))
//Add the recognizer to your view.
imageView.addGestureRecognizer(tapRecognizer)

现在您仍然需要该函数，在本例中为imageTapped：，这是识别手势后动作发生的位置。识别出的手势将作为参数发送，您可以从他们的手势视图属性中找出点击了哪个imageView。

func imageTapped(gestureRecognizer: UITapGestureRecognizer) {
    //tappedImageView will be the image view that was tapped.
    //dismiss it, animate it off screen, whatever.
    let tappedImageView = gestureRecognizer.view!
}

2020-07-07