如何删除空的标题标题

Question

我有一个表格视图，因为我有标题标题，它们运行良好，但是标题标题值的总和变为 null，我想在我的表格视图中隐藏那个 null 标题标题。我该怎么做这个过程。请帮我编码。

- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
{
return [reverseOrder1 objectAtIndex:section];
}
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section
{
  return 60;
}
-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
UIView *headerView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, tableView.bounds.size.width, 75)];
UILabel *headerTitile =[[UILabel alloc]initWithFrame:CGRectMake(20, -5, tableView.bounds.size.width-20, 75)];
headerTitile.text = [reverseOrder1 objectAtIndex:section];

headerTitile.textColor = [UIColor whiteColor];
headerTitile.TextAlignment=NSTextAlignmentCenter;
[headerView addSubview:headerTitile];
headerTitile.font = [UIFont fontWithName:@"Arial" size:16.0f];

headerView.backgroundColor = [UIColor colorWithRed:48/255.0f green:119/255.0f blue:21/255.0f alpha:1];
return headerView;
}

我越来越像上图了，我不想隐藏空值标题。

Answer 1

在heightForHeaderInSection 中进行更改如果没有对象则返回 0

- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section
{
   //Note use your main array which defines section's row and according to each section it may be dictionary or array use accordingly
   NSArray *arrObjects = yourSectionsRowData[section];
   if([arrObjects count]>0])
      return 60.0;
   else
      return 0.0;
}

如果在viewForHeaderInSection 中找不到任何对象，也返回视图 nil

-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
   //Note use your main array which defines section's row and according to each section it may be dictionary or array use accordingly
   NSArray *arrObjects = yourSectionsRowData[section];
   if([arrObjects count]>0])
      return nil;
   else
   {
      UIView *headerView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, tableView.bounds.size.width, 75)];
      UILabel *headerTitile =[[UILabel alloc]initWithFrame:CGRectMake(20, -5, tableView.bounds.size.width-20, 75)];
      headerTitile.text = [reverseOrder1 objectAtIndex:section];

      headerTitile.textColor = [UIColor whiteColor];
      headerTitile.TextAlignment=NSTextAlignmentCenter;
      [headerView addSubview:headerTitile];
      headerTitile.font = [UIFont fontWithName:@"Arial" size:16.0f];

      headerView.backgroundColor = [UIColor colorWithRed:48/255.0f green:119/255.0f blue:21/255.0f alpha:1];
      return headerView;
   }
}