-(CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section
{
  return 12;
}
-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
  UIView* headerSection_V = [[UIView alloc]initWithFrame:CGRectMake(ZERODIS, ZERODIS, SCREEN_WIDTH, 12)];
  [headerSection_V setBackgroundColor:COLOR_3];
  return headerSection_V;
}

/**
 * 解决cell分割线距离两边12 居中对齐
 */
- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath
{
  if ([cell respondsToSelector:@selector(setSeparatorInset:)]) {
    [cell setSeparatorInset:UIEdgeInsetsMake(ZERODIS, 12, ZERODIS, 12)];
  }
  if ([cell respondsToSelector:@selector(setLayoutMargins:)]) {
    [cell setLayoutMargins:UIEdgeInsetsMake(ZERODIS, 12, ZERODIS, 12)];
  }
}

//自定义section的头部
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
  UIView *headerView = [[UIView alloc] initWithFrame:CGRectMake(10, 0, 300, 30)];//创建一个视图
  UIImageView *headerImageView = [[UIImageView alloc] initWithFrame:CGRectMake(10, 0, 300, 30)];
  UIImage *image = [UIImage imageNamed:@"4-2.png"];
  [headerImageView setImage:image];
  [headerView addSubview:headerImageView];
  [headerImageView release];
  NSString *createTime = [self.keysArray objectAtIndex:section];
  createTime = [createTime stringByReplacingCharactersInRange:NSMakeRange(4, 1) withString:@"-"];
  createTime = [createTime stringByReplacingCharactersInRange:NSMakeRange(7, 1) withString:@"-"];
  UILabel *headerLabel = [[UILabel alloc] initWithFrame:CGRectMake(130, 5, 150, 20)];
  headerLabel.backgroundColor = [UIColor clearColor];
  headerLabel.font = [UIFont boldSystemFontOfSize:15.0];
  headerLabel.textColor = [UIColor blueColor];
  headerLabel.text = createTime;
  [headerView addSubview:headerLabel];
  [headerLabel release];
  return headerView;
}