UIScrollView和内部视图手势发生冲突的解决方案

/// 解决UIScrollView拖动手势和其他手势冲突问题
extension UIScrollView: UIGestureRecognizerDelegate {
    public func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldRecognizeSimultaneouslyWith otherGestureRecognizer: UIGestureRecognizer) -> Bool {
        if (gestureRecognizer.state != UIGestureRecognizer.State.possible) {
            return true
        }
        return false
    }
}

参考文章: https://blog.csdn.net/average17/article/details/79182587