自长按手势识别

Question

我想自定义长按手势识别在以下几个方面：

1）当我按住对象上0.5秒，物体变暗，并 2）当我继续按住物体另一秒（总共1.5秒），发生一些动作（例如物体消失）。

本质上，通过按住一个物体至少1.5秒，两个动作发生在两个不同的时间。我也有一个轻击手势识别器，这可能会影响事物。

Answer 1

从@nathan答案是本质上良好，但细节缺少你需要实现UIGestureRecognizerDelegate同时允许手势同时工作，所以这是我的代码

class ViewController: UIViewController, UIGestureRecognizerDelegate{ 

    override func viewDidLoad() { 
    super.viewDidLoad() 

    // Do any additional setup after loading the view. 

    //this for .5 time 
    let firstGesture = UILongPressGestureRecognizer(target: self, action: #selector(firstMethod)) 
    //this for 1.5 
    let secondGesture = UILongPressGestureRecognizer(target: self, action: #selector(secondMethod)) 
    secondGesture.minimumPressDuration = 1.5 
    firstGesture.delegate = self 
    secondGesture.delegate = self 
    self.view.addGestureRecognizer(firstGesture) 
    self.view.addGestureRecognizer(secondGesture) 

} 

func firstMethod() { 
    debugPrint("short") 
} 

func secondMethod() { 
    debugPrint("long") 
} 

func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldRecognizeSimultaneouslyWith otherGestureRecognizer: UIGestureRecognizer) -> Bool{ 
    return true 
} 
} 

希望ŧ他的帮助

Answer 2

请参阅Reinier's solution，因为它是正确的。这其中增加了一个延迟，以满足require(toFail:)

---

可以使用属性minimumPressDuration设定的定时（以秒计，默认是0.5）

let quickActionPress = UILongPressGestureRecognizer(target: self, action: #selector(ViewController.zeroFiveSecondPress(gesture:))) // 0.5 seconds by default 
let laterActionPress = UILongPressGestureRecognizer(target: self, action: #selector(ViewController.oneFiveSecondPress(gesture:))) 
laterActionPress.minimumPressDuration = 1.5 

someView.addGestureRecognizer(quickActionPress) 
someView.addGestureRecognizer(laterActionPress) 

// If 1.5 detected, only execute that one 
quickActionPress.require(toFail: laterActionPress) 

@objc func zeroFiveSecondPress(gesture: UIGestureRecognizer) { 
    // Do something 
    print("0.5 press") 
} 

@objc func oneFiveSecondPress(gesture: UIGestureRecognizer) { 
    zeroFiveSecondPress(gesture: gesture) 
    // Do something else 
    print("1.5 press") 
}