ScrollView平移手势与panGestureRecognizer之间的冲突

Question

我UIScrollView在中有一个UIViewController，由segue模态显示，另外一个UIPanGestureRecognizer确实通过pan关闭了视图控制器。此手势仅在以下情况下有效

 scrollView.contentOffset.y == 0

问题是，现在两个平移手势相互冲突，我无法再滚动视图。

为了解决这个问题，我尝试使用gestureRecognizer(_: shouldRecognizeSimultaneouslyWith:)方法，返回yes，并且还尝试将自定义的平移手势添加到UIScrollView平移手势识别器中，如下所示：

 scrollView.panGestureRecognizer.addTarget(self, action: #selector(handlePanGesture(_:)))

但是这些并不能解决问题。如果您知道如何解决此问题，请多多帮助。

已编辑

这是我的平移手势的代码，可消除视图控制器：

     @IBAction func handlePanGesture(_ sender: UIPanGestureRecognizer) {
    let percentThreshold: CGFloat = 0.3

    if scrollView.contentOffset.y == 0 {
        let translation = sender.translation(in: view)
        let verticalMovement = translation.y / view.bounds.height
        let downwardMovement = fmaxf(Float(verticalMovement), 0.0)
        let downwardMovementPercent = fminf(downwardMovement, 1.0)
        let progress = CGFloat(downwardMovementPercent)

        guard let interactor = interactor else {return}
        switch sender.state {
        case .began:
            interactor.hasStarted = true
            dismiss(animated: true, completion: nil)
        case .changed:
            interactor.shouldFinish = progress > percentThreshold
            interactor.update(progress)
        case .cancelled:
            interactor.hasStarted = false
            interactor.cancel()
        case .ended:
            interactor.hasStarted = false
            interactor.shouldFinish ? interactor.finish() : interactor.cancel()
        default:
            break
        }

    }
}

EDITED_2 这是以下代码Interactor：

class Interactor: UIPercentDrivenInteractiveTransition {
var hasStarted = false
var shouldFinish = false 

}

附言：我知道有很多类似的问题，但它们对我不起作用。

Answer 1

要在 aUIPanGestureRecognizer位于 ScrollView 上时允许滚动，您需要创建一个UIGestureRecognizerDelegate返回 true 的gestureRecognizer(_:shouldRecognizeSimultaneouslyWith:)

如果不这样做，将无法在 ScrollView 上滚动。

这是这样做的：

let scrollViewPanGesture = UIPanGestureRecognizer(target: self, action: #selector(onPan(_:)))
scrollViewPanGesture.delegate = self
scrollView.addGestureRecognizer(scrollViewPanGesture)

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

Answer 2

在滚动视图下添加一个子视图并向其添加平移手势，而不是将其添加到 self.view ，这肯定会与滚动视图的冲突