hide custom header in tableview in iphone - iphone

Question

I am using custom header in category tableview. So, in accordance to that condition, I have to hide header and it's detail. So, I used following code for displaying header with condition.
- (UIView *) tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
UIView *aView =[[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 30)];
if(section==0)
{
if(![appDelegate.purchase_requisitions_preference isEqualToString:#"0"] && ![appDelegate.purchase_requisitions_preference isEqualToString:#"null"])
{
UIButton *btn=[UIButton buttonWithType:UIButtonTypeCustom];
[btn setFrame:CGRectMake(0, 0, 320, 30)];
btn.backgroundColor = [UIColor colorWithRed:39.0/255.0 green:131.0/255.0 blue:33.0/255.0 alpha:1.0f];
[btn setTag:section+1];
UILabel *label1 = [[UILabel alloc]init];
label1.frame = CGRectMake(20, 0, 320, 30);
label1.backgroundColor = [UIColor clearColor];
label1.textColor = [UIColor whiteColor];
label1.font = [UIFont boldSystemFontOfSize:16];
label1.text = #"Purchase Order Requisitions";
[label1 setTag:section+1];
[btn addSubview:label1];
[aView addSubview:btn];
[btn addTarget:self action:#selector(sectionTapped:) forControlEvents:UIControlEventTouchDown];
}
else
{
return nil;
}
}
else if(section==1)
{
if(![appDelegate.hr_vacancies_preference isEqualToString:#"0"] && ![appDelegate.hr_vacancies_preference isEqualToString:#"null"])
{
UIButton *btn=[UIButton buttonWithType:UIButtonTypeCustom];
[btn setFrame:CGRectMake(0, 0, 320, 30)];
btn.backgroundColor = [UIColor colorWithRed:39.0/255.0 green:131.0/255.0 blue:33.0/255.0 alpha:1.0f];
[btn setTag:section+1];
UILabel *label1 = [[UILabel alloc]init];
label1.frame = CGRectMake(20, 0, 320, 30);
label1.backgroundColor = [UIColor clearColor];
label1.textColor = [UIColor whiteColor];
label1.font = [UIFont boldSystemFontOfSize:16];
label1.text = #"Human Resource Vacancies";
[label1 setTag:section+1];
[btn addSubview:label1];
[aView addSubview:btn];
[btn addTarget:self action:#selector(sectionTapped:) forControlEvents:UIControlEventTouchDown];
}
else
{
return nil;
}
}
else if(section==2)
{
if(![appDelegate.hr_offers_preference isEqualToString:#"0"] && ![appDelegate.hr_offers_preference isEqualToString:#"null"])
{
NSLog(#"in offer");
UIButton *btn=[UIButton buttonWithType:UIButtonTypeCustom];
[btn setFrame:CGRectMake(0, 0, 320, 30)];
btn.backgroundColor = [UIColor colorWithRed:39.0/255.0 green:131.0/255.0 blue:33.0/255.0 alpha:1.0f];
[btn setTag:section+1];
UILabel *label1 = [[UILabel alloc]init];
label1.frame = CGRectMake(20, 0, 320, 30);
label1.backgroundColor = [UIColor clearColor];
label1.textColor = [UIColor whiteColor];
label1.font = [UIFont boldSystemFontOfSize:16];
label1.text = #"Human Resource Job Offers";
[label1 setTag:section+1];
[btn addSubview:label1];
[aView addSubview:btn];
[btn addTarget:self action:#selector(sectionTapped:) forControlEvents:UIControlEventTouchDown];
}
else
{
return nil;
}
}
return aView;
}
If my condition is false, then I want to hide my header as well as it's detail. Its detail is getting hide but header is still displaying there.

Answer 1

return 0 in heightForHeaderInSection: method if your Data is nil otherwise return 30( just example) like bellow..
-(CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section{
if(section==0)
{
if(![appDelegate.purchase_requisitions_preference isEqualToString:#"0"] && ![appDelegate.purchase_requisitions_preference isEqualToString:#"null"])
{
return 30;// any height which you want
}
else{
return 0;
}
}
// and so on
}

Answer 2

you need to set Height of Header Section,
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section{
if(section==0 | section==1 |section==2)
return 30;
else
return 0;
}