手势总结
https://www.jianshu.com/p/21bb5ba47660

https://www.jianshu.com/p/da24f261c1d3

#pragma mark ************** 子视图不响应父视图手势
-(BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch{
    
    if ([touch.view isDescendantOfView:self.viewContent]) {
        return NO;
    }
    
    return YES;
    
}