How to add header to each column in Collectionview - ios

Question

I have created a collectionview that has different data in each column. But to seperate them I need to add header . I can add only one header. My code for this is:
- (UICollectionReusableView *)collectionView:(UICollectionView *)collectionView viewForSupplementaryElementOfKind:(NSString *)kind atIndexPath:(NSIndexPath *)indexPath
{
UICollectionReusableView *reusableview = nil;
UILabel *lblHeader;
if (kind == UICollectionElementKindSectionHeader) {
RePrecioHeader *headerView = [collectionView dequeueReusableSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:#"CollectionHeaderView" forIndexPath:indexPath];
NSArray *cellsInSection = self.ClassesArr[indexPath.section];
float collectionWidth = self.view.bounds.size.width;
int cellsInSectionCount = cellsInSection.count;
float cellWidth = (collectionWidth) / cellsInSectionCount;
cellWidth -= 10* (cellsInSectionCount -1);
for(int i=0;i<self.ClassesArr.count; i++){
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(85/self.ClassesArr.count,-5, cellWidth, 40)];
view.backgroundColor = [UIColor grayColor];
UILabel *lbl = [[UILabel alloc] initWithFrame:CGRectMake(10, 10, 100, 14)];
lbl.textColor = [UIColor whiteColor];
lbl.font = [UIFont systemFontOfSize:12.0f];
lbl.backgroundColor = [UIColor clearColor];
lbl.text = [[[self.ClassesArr objectAtIndex:i]objectAtIndex:0]objectForKey:#"textoClase"];
[view addSubview:lbl];
[self.collectionView addSubview:view];
}
reusableview = headerView;
}
return reusableview;
}
The column number should be like the number of ClassesArr..

Answer 1

I have fixed my problem. Thanks.
RePrecioHeader *headerView = [collectionView dequeueReusableSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:#"CollectionHeaderView" forIndexPath:indexPath];
UILabel *lblHeader=(UILabel *)[headerView viewWithTag:MY_HEADER_LABEL_TAG];
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(5,0, 80, 30)];
view.backgroundColor = [UIColor grayColor];
lblHeader = [[UILabel alloc] initWithFrame:CGRectMake(2,3, 60, 10)];
lblHeader.backgroundColor = [UIColor clearColor];
lblHeader.textColor=[UIColor whiteColor];
lblHeader.font = [UIFont systemFontOfSize:11.0f];
lblHeader.numberOfLines=2;
lblHeader.textAlignment=NSTextAlignmentCenter;
lblHeader.text =[[[self.ClassesArr objectAtIndex:indexPath.section]objectAtIndex:0]objectForKey:#"textoClase"];
[view addSubview:lblHeader];
[headerView addSubview:view];