Collection View Header not showing

Question

I am currently implementing infinite scrolling using collectionView by following this link. But I got stuck when I have to add collectionView sectionheader. The header doesn't shows up when I am implemeting the above link custom flow layout, but if I use default UICollectionViewLayout it's been displayed.

Implemented the method : -

func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, referenceSizeForHeaderInSection section: Int) -> CGSize

Have you implemented `numberOfSectionsInCollectionView` for the delegate? It won't show sections if you don't declare them. — Tristan Warner-Smith, Dec 04 '17 at 09:56
@TristanWarner-Smith I have implemented it. Moreover I have written that it's showing header in case of default `UICollectionViewLayout` — Aditya Srivastava, Dec 04 '17 at 09:57
Have you registered the section header as a xib and implemented viewForSupplementaryElementOfKind? — Tristan Warner-Smith, Dec 04 '17 at 10:00

Aman Gupta · Answer 1 · 2018-05-09T07:16:14.310

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func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, referenceSizeForHeaderInSection section: Int) -> CGSize

This function is important for giving the size for collection view section header , and if you using the UICollectionViewLayout functions and pass the attribute layout then "referenceSizeForHeaderInSection" method is not need to implement

layoutAttributesForElements(in rect:)

edited May 09 '18 at 07:16

answered Dec 04 '17 at 10:01

Aman Gupta

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which method you are using "referenceSizeForHeaderInSection" or "layoutAttributesForElements". – Aman Gupta Dec 04 '17 at 10:41
Can you show me how to you registered the section. and i aman19ish@gmail.com – Aman Gupta Dec 04 '17 at 11:14
This answer actually helped me get unstuck from an issue I was having where I was already recalculating the header frame in my flowlayout subclass. Unfortunately I can't upvote it because I think it needs to be improved and expanded on for clarity in order to answer the original question. I'm not sure most people want to be touching something like `layoutAttributesForElements(in rect:)` – bitwit May 08 '18 at 21:09
Thank you for your suggestion bitwit – Aman Gupta May 09 '18 at 07:17

Sanjukta · Answer 2 · 2017-12-04T12:17:54.270

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It works for me please try it hope helps to you

Set the UICollectionViewDelegateFlowLayout delegate

YourViewController : UIViewController <UICollectionViewDelegateFlowLayout>

if You want scrolling then you can use this method in didLoad method

self.yourcollectionview.scrollDirection = UICollectionViewScrollDirectionHorizontal

self.yourcollectionview.scrollDirection = UICollectionViewScrollDirectionVertical

edited Dec 04 '17 at 12:17

answered Dec 04 '17 at 12:01

Sanjukta

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have you used the same link for both side scrolling ? – Aditya Srivastava Dec 04 '17 at 12:06
Will You want scrolling ? ( vertically or horizontally) – Sanjukta Dec 04 '17 at 12:12
I want both way – Aditya Srivastava Dec 04 '17 at 12:12

Collection View Header not showing

2 Answers2