iOS开发页面滑动返回跟scrollView左右划冲突问题

-(BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{
    // 首先判断otherGestureRecognizer是不是系统pop手势
    if ([otherGestureRecognizer.view isKindOfClass:NSClassFromString(@"UILayoutContainerView")]) {
        // 再判断系统手势的state是began还是fail，同时判断scrollView的位置是不是正好在最左边
        if (otherGestureRecognizer.state == UIGestureRecognizerStateBegan && self.contentOffset.x == 0) {
            return YES;
        }
    }

    return NO;
}