同时解决UITapGestureRecognizer和UILongPressGestureRecognizer问题，用手指触地触发UIGestureRecognizer.State.began

Question

首先，所有已经回答的问题都帮不了我

1. 斯威夫特:长按压手势识别器-检测水龙头和长按压
2. 在表视图中同时使用点击手势和长按压
3. 长按压手势识别器只有当手指被提起时才会发射
4. 诸若此类

代码几乎可以正常工作，除了一件事:只有当我把手指从屏幕上抬起时，长按压手势才会被调用。但我需要像Instagram这样的行为(当你可以在故事之间切换，用手指暂停某个故事)。

我的问题更多是关于当用户触摸手指时如何强迫UILongPressGesture开火，而不是up.。

这是我的密码：

private func setupTapGestures() {
    tapRecognizer = UITapGestureRecognizer()
    tapRecognizer?.addTarget(self, action: #selector(handleTapGesture(_:)))
    tapRecognizer?.delegate = self
    view.addGestureRecognizer(tapRecognizer!)

    longPressRecognizer = UILongPressGestureRecognizer()
    longPressRecognizer?.addTarget(self, action: #selector(handleLongPressGesture(_:)))
    longPressRecognizer?.minimumPressDuration = 0.1
    longPressRecognizer?.delegate = self
    view.addGestureRecognizer(longPressRecognizer!)
}

@objc func handleTapGesture(_ gestureRecognizer: UIGestureRecognizer) {
    let width = view.frame.width
    let point = gestureRecognizer.location(in: view)
    viewModel?.tapAction(viewWidth: width, tapPoint: point)
    Swift.print("Tap gesture")
}

@objc func handleLongPressGesture(_ gestureRecognizer: UILongPressGestureRecognizer) {
    if gestureRecognizer.state == .began {
        Swift.print("Began")
    } else if gestureRecognizer.state == .ended {
        Swift.print("Ended")
    }
}

UIGestureRecognizerDelegate

func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldRequireFailureOf otherGestureRecognizer: UIGestureRecognizer) -> Bool {
    // Don't recognize a single tap until a long-press fails
    if gestureRecognizer == tapRecognizer && otherGestureRecognizer == longPressRecognizer {
        return true
    }
    return false
}

shouldRequireFailureOf文档

有什么建议或想法吗？

Answer 1

我想知道您对shouldRequireFailureOf的实现是否引起了问题？

这对我来说很好(注意:我使用了.minimumPressDuration = 0.25，因为点击不到0.1秒有点困难)：

class GestureTestViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        setupTapGestures()
    }

    private func setupTapGestures() -> Void {

        let singleTapGesture = UITapGestureRecognizer(target: self, action: #selector(handleTapGesture(_:)))
        view.addGestureRecognizer(singleTapGesture)

        let longPressGesture = UILongPressGestureRecognizer(target: self, action: #selector(handleLongPressGesture(_:)))
        longPressGesture.minimumPressDuration = 0.25
        view.addGestureRecognizer(longPressGesture)

    }

    @objc func handleLongPressGesture(_ gesture: UILongPressGestureRecognizer) -> Void {
        if gesture.state == .began {
            print("Did Long Press (began)")
        }
        if gesture.state == .ended {
            print("Did Long Press (ended)")
        }
    }

    @objc func handleTapGesture(_ gesture: UITapGestureRecognizer) -> Void {
        print("Did Single Tap")
    }

}

当我点击时，我会在调试控制台中得到“执行单击”。

当我轻拍和握住时，我很快得到了“做长按压(开始)”，而在手指举起时，我得到了“长按压(结束)”。