ios uitableviewcell 添加uibutton无法Highlighted问题

[tableView setDelaysContentTouches:NO];

 for (UIView *currentView in tableView.subviews) {

        if ([currentView isKindOfClass:[UIScrollView class]]) {
            ((UIScrollView *)currentView).delaysContentTouches = NO;
            break;
        }

    }