ios - Swift: Long Press Gesture Recognizer - 检测点击和长按

Question

我想连接一个 Action ，如果手势是点击，它会以特定方式为对象设置动画，但如果按下持续时间超过 0.5 秒，它会执行其他操作。

现在，我刚刚连接了动画。我不知道如何区分长按和点击？我如何访问新闻持续时间以实现上述目标？

 @IBAction func tapOrHold(sender: AnyObject) {
        UIView.animateKeyframesWithDuration(duration, delay: delay, options: options, animations: {

            UIView.addKeyframeWithRelativeStartTime(0, relativeDuration: 0, animations: {

                self.polyRotate.transform = CGAffineTransformMakeRotation(1/3 * CGFloat(M_PI * 2))
            })
            UIView.addKeyframeWithRelativeStartTime(0, relativeDuration: 0, animations: {
                self.polyRotate.transform = CGAffineTransformMakeRotation(2/3 * CGFloat(M_PI * 2))
            })
            UIView.addKeyframeWithRelativeStartTime(0, relativeDuration: 0, animations: {
                self.polyRotate.transform = CGAffineTransformMakeRotation(3/3 * CGFloat(M_PI * 2))
            })

            }, completion: { (Bool) in
                let vc : AnyObject! = self.storyboard?.instantiateViewControllerWithIdentifier("NextView")
                self.showViewController(vc as UIViewController, sender: vc)
        })

Answer 1

定义两个 IBActions 并为每个设置一个 Gesture Recognizer。这样您就可以为每个手势执行两个不同的操作。

您可以在界面构建器中将每个Gesture Recognizer 设置为不同的 IBAction。

@IBAction func tapped(sender: UITapGestureRecognizer)
{
    println("tapped")
    //Your animation code.
}

@IBAction func longPressed(sender: UILongPressGestureRecognizer)
{
    println("longpressed")
    //Different code
}

通过没有界面生成器的代码

let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: "tapped:")
    self.view.addGestureRecognizer(tapGestureRecognizer)
    
let longPressRecognizer = UILongPressGestureRecognizer(target: self, action: "longPressed:")
    self.view.addGestureRecognizer(longPressRecognizer)

func tapped(sender: UITapGestureRecognizer)
{
    println("tapped")
}

func longPressed(sender: UILongPressGestureRecognizer)
{
    println("longpressed")
}

swift 5

let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(tapped))
self.view.addGestureRecognizer(tapGestureRecognizer)
    
let longPressRecognizer = UILongPressGestureRecognizer(target: self, action: #selector(longPressed))
self.view.addGestureRecognizer(longPressRecognizer)
    
@objc func tapped(sender: UITapGestureRecognizer){
    print("tapped")
}

@objc func longPressed(sender: UILongPressGestureRecognizer) {
    print("longpressed")
}