Crash on Calling Collection Reload

[Hamza Imran]

Hi , i have used ur library in my collection view, i have mad my custom collection view have a single image on cell. I have passed all the data source and delegate this is my code,
//Collection View Reload self.knowledgeCollectionView.collectionViewLayout = CardsCollectionViewLayout() self.knowledgeCollectionView.isPagingEnabled = true self.knowledgeCollectionView.showsHorizontalScrollIndicator = false self.knowledgeCollectionView.reloadData()

` override func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return cardsArray.count
}

override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    
    let cell = knowledgeCollectionView.dequeueReusableCell(withReuseIdentifier: "knowledgeCell", for: indexPath) as! KnowledgeCVC
    
    cell.cardImage.image = cardsArray[indexPath.row]
    
    return cell
}`

But when i call my VC the app crashes on a delegate written in ur library,
` // MARK: - UICollectionViewDelegateFlowLayut

@objc open func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAtIndexPath indexPath: IndexPath) -> CGSize {
    guard let cellWidthValue = cachedCellWidths?[indexPath.row] else {
        fatalError("cachedCellWidths for \(indexPath.row) must not be nil")
    }
    return CGSize(width: cellWidthValue, height: collectionView.frame.size.height)
}`

Error is Thread 1: Fatal error: Index out of range . How i can get rid of this?

[Filipp Fediakov]

Hi @Hamza123Imran,

Are you sure that you are speaking about the code from my library?
My library only includes CardsCollectionViewLayout.swift and there are no lines of code that you have mentioned.