使用tableView的UITableViewStyleGrouped样式时

它是由两部分组成的，上一个section的footer和下一个section的header。通过以下代码就很明显

-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{

    UIView *view = [[UIView alloc]init];
    view.frame = CGRectMake(0, 0, ScreenW, 20);

    UILabel *label = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, ScreenW, 20)];
    label.center = CGPointMake(ScreenW/2, 20/2);
    label.font = [UIFont systemFontOfSize:12];
    label.backgroundColor = [UIColor redColor];
    label.textAlignment = NSTextAlignmentCenter;
    [view addSubview:label];
    if (section == 0) {
        label.text =  @"最后更新时间：";
    }else
    {

 

        label.text =@"配置信息";
    
    }
    
    
    
    return view;

}
-(UIView *)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section
{
    UIView *view = [[UIView alloc]init];
    view.frame = CGRectMake(0, 0, ScreenW, 20);
    
    UILabel *label = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, ScreenW, 20)];
    label.center = CGPointMake(ScreenW/2, 20/2);
    label.font = [UIFont systemFontOfSize:12];
    label.backgroundColor = [UIColor blueColor];
    label.textAlignment = NSTextAlignmentCenter;
    [view addSubview:label];
    return view;
}

若想去掉section的footer，仅设置：应将其高度设为比1小很多，但不为0的值，才会有效果

-(CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section
{

    return 0.001f;

}