ios - 让用户只按一次按钮

Question

我想让用户用一个按钮给 +1 或用另一个按钮给 -1 分，但他们应该只能按一次这些按钮中的一个...

我使用这段代码，但用户仍然可以多次点击按钮...

var job: Job! {
    didSet {
        jobLabel.text = job.text
        likeButton.setTitle("👍 \(job.numberOfLikes)", for: [])
        dislikeButton.setTitle("👎 \(job.numberOfDislikes)", for: [])
    }
}

@IBAction func dislikeDidTouch(_ sender: AnyObject)
{
    (dislikeDidTouch).isEnabled = false
    job.dislike()
    dislikeButton.setTitle("👎 \(job.numberOfDislikes)", for: [])
    dislikeButton.setTitleColor(dislikeColor, for: [])    }

@IBAction func likeDidTouch(_ sender: AnyObject)
{
    sender.userInteractionEnabled=YES;
    job.like()
    likeButton.setTitle("👍 \(job.numberOfLikes)", for: [])
    likeButton.setTitleColor(likeColor, for: [])
}

Answer 1

因为发送者是一个 UIButton ，所以最好像这样构造函数

@IBAction func dislikeDidTouch(_ sender: UIButton)
@IBAction func likeDidTouch(_ sender: UIButton)

每个里面都有

sender.isEnabled = false