Resolution gesture ( UIPanGestureRecognizer and UIScreenEdgePanGestureRecognizer ) conflict

gistfile1.swift

extension UIScrollView {
    //当UIScrollView滑动手势与 UIScreenEdgePanGestureRecognizer手势同在，手势沿响应链向下传递
    func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldRecognizeSimultaneouslyWithGestureRecognizer otherGestureRecognizer: UIGestureRecognizer) -> Bool {
        // 如果侧滑 Back 手势以及侧滑滚动手势同时响应，则调用 `open func require(toFail otherGestureRecognizer: UIGestureRecognizer)`使其侧滑滚动手势 failed
        if gestureRecognizer is UIPanGestureRecognizer && otherGestureRecognizer is UIScreenEdgePanGestureRecognizer {
            gestureRecognizer.require(toFail: otherGestureRecognizer)
            // 允许手势沿响应链向下传递
            return true
        }
        return false
    }

}