Index out of range : UICollectionView inside a UITableViewCell - swift

Question

I'm trying to put a UICollectionView in a UITableViewCell, but I guess I'm doing wrong...
So here is my code :
PanierMenuCell is UITableViewCell
extension PanierMenuCell : UICollectionViewDataSource, UICollectionViewDelegate {
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return listProduit.count
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cellIdentifier = "PanierCollectionCell"
guard let cell = collectionView.dequeueReusableCell(withReuseIdentifier: cellIdentifier, for: indexPath) as? PanierCollectionCell else {
fatalError("erreur de conversion !!")
}
cell.ONom.text = listProduit[indexPath.row].nomProduct
cell.OQtt.text = "x\(listProduit[indexPath.row].nbProduct)"
cell.OImage.image = UIImage(named: "test")
cell.backgroundColor = .gray
cell.layer.borderWidth = 1
cell.layer.borderColor = UIColor.lightGray.cgColor
cell.layer.cornerRadius = 5
return cell
}
}
Here is my class calling the UITableViewCell :
extension PanierVC : UITableViewDataSource, UITableViewDelegate {
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return listPanierProduct.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cellIdentifier = "PanierMenuCell"
guard let cell = tableView.dequeueReusableCell(withIdentifier: cellIdentifier, for: indexPath) as? PanierMenuCell else {
fatalError("erreur de conversion !!")
}
let produit = listPanierProduct[indexPath.row].product as! Menu
let listProduit = produit.getListProducts()
cell.listProduit = listProduit
cell.OTotal.text = "Total: \(produit.prix)0€"
cell.ONomMenu.text = "Menu : \(produit.nom)"
cell.backgroundColor = .gray
return cell
}
So here is the problem :
When I'm using several cell with collectionView inside without scrolling the tableview, that's working well, the problem is when I need to scroll down the tableView (the tableview is so reloading the cell), that's causing an error : "Thread 1: Fatal error: Index out of range" in
cell.ONom.text = listProduit[indexPath.row].nomProduct
The item insides the UICollectionView are king of mixed together, I mean that a tableviewcell will take some items which are suppose to be in other tableviewcell, like if the cell.listproduit was mixed... Don't know how clear I was, but I can explain more if needed.
Any ideas on how I should solve this ?
Thank's a lot

Answer 1

You need to reload your UICollectionView after changing the data source. This will update the number of items in the collection view.
So after this line:
cell.listProduit = listProduit
Add this line (Assuming you have a property referencing your UICollectionView):
cell.collectionView.reloadData()