I fill cellTypes array

func fillCellTypes() {
    cellTypes = []
    cellTypes.append(Array(repeating: CellType.vanc, count: self.vancPhotos.count))
    cellTypes.append(Array(repeating: CellType.calg, count: self.calgPhotos.count))
    cellTypes.append(Array(repeating: CellType.mon, count: self.monPhotos.count))
    cellTypes.append(Array(repeating: CellType.ott, count: self.ottPhotos.count))
    cellTypes.append(Array(repeating: CellType.tor, count: self.torPhotos.count))
    self.collectionView.reloadData()
    print(cellTypes)
}

My CellType enum

enum CellType {
    case vanc
    case calg
    case ott
    case tor
    case mon
}

var cellTypes: [[CellType]] = []

in config I fill all photos arrays

var vancPhotos: [PhotoModel] = []
var calgPhotos: [PhotoModel] = []
var ottPhotos: [PhotoModel] = []
var torPhotos: [PhotoModel] = []
var monPhotos: [PhotoModel] = []
var photos: [PhotoModel] = []

func configCollectionView() {
        photoViewModel.getPhotos()
        photos = photoViewModel.photos
        vancPhotos = photoViewModel.vancPhotos
        calgPhotos = photoViewModel.calgPhotos
        ottPhotos =  photoViewModel.ottPhotos
        torPhotos =  photoViewModel.torPhotos
        monPhotos =  photoViewModel.monPhotos

Inside cellForItemAt I get index out of range at switch.

extension WeatherDetailVC: UICollectionViewDelegate, UICollectionViewDataSource, UICollectionViewDelegateFlowLayout {
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return cellTypes.count
    }
    
    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        switch cellTypes[indexPath.section][indexPath.row] {
        case .tor: return configureTorontoCell(indexPath: indexPath)
        ...
        }
    }
    
    func configureTorontoCell(indexPath: IndexPath) -> PhotoCollectionViewCell  {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: PhotoCollectionViewCell.identifier, for: indexPath) as? PhotoCollectionViewCell
        cell?.setup(photoViewModel.torPhotos[indexPath.row])
        return cell!
    }

return cellTypes.count is 3 so my arrays are filled but cellforitem is some how wrong.

CodePudding user response：

You would need to implement this differently you need multiple sections as your data consists of an array of arrays:

func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
    cellTypes[section].count
}

and add this function:

func numberOfSections(in collectionView: UICollectionView) -> Int {
    cellTypes.count
}