Question

我有一个带6个按钮的屏幕。所有按钮都连接到一个IBAction。它们被标记，我使用switch语句来确定哪个被点击。

如何为每个按钮添加长按和手势？例如，当我点击按钮1时，它知道它是一个长手势还是一个轻敲手势？

因此，如果我按下按钮会做出不同的事情，那么当我长按时。

感谢。

@IBAction func playPauseAudioButton(sender: UIButton) {

    switch sender.tag {

    case 1:
        //Tap Gesture 
        //Long Gesture
        //I need this for every button
        print("1")

    case 2:
        print("2")

    case 3:
        print("3")

    case 4:

    case 5:
        print("5")

    case 6:
        print("6")

    default:
        print("Default")
    }
}

Answer 1

这样做

@IBAction func playPauseAudioButton(sender: AnyObject) {
    let tapGesture = UITapGestureRecognizer(target: self, action: "normalTap:")
    let longGesture = UILongPressGestureRecognizer(target: self, action: "longTap:")
    tapGesture.numberOfTapsRequired = 1
    sender.addGestureRecognizer(tapGesture)
    sender.addGestureRecognizer(longGesture)
}

func normalTap(sender : UIGestureRecognizer) {
    let recognizer: UIGestureRecognizer = sender
    let tag: Int = recognizer.view!.tag

    switch tag {
    case 1:
        // Do some action for button 1
        print("1")
    case 2:
        print("2")
    case 3:
        print("3")
    case 4:
        print("4")
    case 5:
        print("5")
    case 6:
        print("6")
    default:
        print("Default")
    }
}

func longTap(sender : UIGestureRecognizer) {
    let recognizer: UIGestureRecognizer = sender
    let tag: Int = recognizer.view!.tag

    if sender.state == .Ended {
        print("UIGestureRecognizerStateEnded")
        //Do Whatever You want on End of Gesture
    }
    else if sender.state == .Began {
        print("UIGestureRecognizerStateBegan.")
        //Do Whatever You want on Began of Gesture
    }

    switch tag {
    case 1:
        // Do some action for button 1
        print("1")
    case 2:
        print("2")
    case 3:
        print("3")
    case 4:
        print("4")
    case 5:
        print("5")
    case 6:
        print("6")
    default:
        print("Default")
    }
}

Answer 2

定义两个IBActions并为每个IBActions设置一个手势识别器。这样，您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手势识别器设置为不同的IBAction。

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

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

通过没有界面构建器的代码

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")
}

希望这会对你有所帮助。

如何为这些按钮添加长按和手势？

2 个答案: