小编Joh*_*arp的帖子

我有以下代码,我的长按不按预期方式工作.任何人都可以弄清楚它为什么不起作用？

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.

    let longPressRecognizer = UILongPressGestureRecognizer(target: self, action: "myButton:")
    longPressRecognizer.minimumPressDuration = 0.5
    myButton.addGestureRecognizer(longPressRecognizer)
}

@IBOutlet weak var myButton: UIButton!

@IBAction func myButton(longPress: UILongPressGestureRecognizer) {

    if longPress.state != .Began {

        presentAlertController()

        return
    }
}

当我按住按钮时出现此错误

2016-01-09 00:41:28.785 longPressTest[1870:551106] Warning: Attempt to present <UIAlertController: 0x144d6a500>  on <longPressTest.ViewController: 0x144e3a450> which is already presenting <UIAlertController: 0x144e59d80>
2016-01-09 00:41:28.903 longPressTest[1870:551106] Attempting to load the view of a view …

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Long和Tap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,如果我点击按钮会做出不同的事情,那么当我长按时.

谢谢.

@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")
    }
}