CollectionView sizeForitemAt method not working for ios 9

Question

I'm having weird issue and I'm not sure why this happening.As you can see this both images one is of ios 9 running ipad and another is ios11 running ipad. for ios9 running ipad cell is not resizing. I search a lot but did't get a answer. Please help me with this and i also attached code.

 func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: reuseIdentifier, for: indexPath) as! WalkthroughCollectionViewCell

    let walkObject = walkObjects[indexPath.row]

    cell.walkImageView.image = walkObject.image
    cell.walkHeader.text = walkObject.Header
    cell.walkDetails.text = walkObject.Details
    cell.getStartedButton.addTarget(self, action: #selector(getStarted(sender:)), for: .touchDown)

    if (indexPath.row + 1) == walkObjects.count {
        cell.getStartedButton.isHidden = false
    }else{
        cell.getStartedButton.isHidden = true
    }

    return cell
}


func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
    return CGSize(width: collectionView.frame.width, height: collectionView.frame.height)
}


func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumLineSpacingForSectionAt section: Int) -> CGFloat {
    return 0.0
}

func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumInteritemSpacingForSectionAt section: Int) -> CGFloat {
    return 0.0
}

you are required to implement UICollectionViewDelegateFlowLayout — Vikky, Dec 13 '17 at 06:27
I already added **extension WalkthroughCollectionView: UICollectionViewDelegate,UICollectionViewDataSource,UICollectionViewDelegateFlowLayout** — jay patel, Dec 13 '17 at 06:31

score 24 · Answer 1 · answered Jun 17 '20 at 12:49

24

In my case, I changed Estimate Size from Automatic to None and using:

 collectionView(_ collectionView: UICollectionView, layout
 collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath:
 IndexPath) -> CGSize

answered Jun 17 '20 at 12:49

Senocico Stelian

1,378
15
23

2

You saved my day – Asi Givati Jul 22 '20 at 14:44
1

Wow. ... Just... wow. When has it become normal that code which is being called is no longer the source of truth? A storyboard setting overrides code, that is terrible. Thank you, this works. – iOS Blacksmith May 27 '21 at 06:27

score 0 · Answer 2 · answered Dec 13 '17 at 06:33

0

OK, I don't why but it's working now. i just set NavigationBarHidden false. it started working.

answered Dec 13 '17 at 06:33

jay patel

238
2
14

1

Yes, Because i don't want to show navigation bar in this view that's why i set hidden and but now i think i need to show it for older version only. – jay patel Dec 13 '17 at 06:44

CollectionView sizeForitemAt method not working for ios 9

2 Answers2