UICollectionView: How to get the header view for a section?

Question

There is a method to get a cell by indexPath (UICollectionView cellForItemAtIndexPath:). But I can\"t find a method to get one of the supplementary vie

Answer 1

First thing you have to do is check the box "Section Header" in the collection view's attribute inspector. Then add a collection reusable view just like you added your cell to the collection view, write an identifier and make a class for it if you need to. Then implement the method:

- (UICollectionReusableView *)collectionView:(UICollectionView *)collectionView viewForSupplementaryElementOfKind:(NSString *)kind atIndexPath:(NSIndexPath *)indexPath

From there do exactly like you did with cellForItemAtIndexPath Its also important to specify if its a header or footer you are coding about:

if([kind isEqualToString:UICollectionElementKindSectionHeader])
{
    Header *header = [collectionView dequeueReusableSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:@"headerTitle" forIndexPath:indexPath];
    //modify your header
    return header;
}

else
{

    EntrySelectionFooter *footer = [collectionView dequeueReusableSupplementaryViewOfKind:UICollectionElementKindSectionFooter withReuseIdentifier:@"entryFooter" forIndexPath:indexPath];
    //modify your footer
    return footer;
}

use indexpath.section to know what section this is in also note that Header and EntrySelectionFooter are custom subclasses of UICollectionReusableView that I made