How can I put 2 collectionViews in a single ViewController? - ios

Question

I have this code to make a UICollectionView with in another ViewController:
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return tvSeries.count
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let identifier = "Item"
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: identifier, for: indexPath) as! SeriesCollectionViewCell
cell.itemLabel.text = tvSeries[indexPath.row]
cell.itemImage.image = UIImage.init(imageLiteralResourceName: tvSeries[indexPath.row])
return cell
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
let item = sender as? UICollectionViewCell
let indexPath = collectionView.indexPath(for: item!)
let detailVC = segue.destination as! DetailViewController
detailVC.detailName = tvSeries[(indexPath?.row)!]
}
I want to have a ViewController with 2 CollectionViews like in this picture:

Answer 1

In your collectionView functions such as numberOfItemsInSection, check if the collectionView argument is equal to one or the other collection view and then return the number as required.
For example, if you had the following IBOutlets:
#IBOutlet weak var collectionViewOne: UICollectionView!
#IBOutlet weak var collectionViewTwo: UICollectionView!
then your numberOfItemsInSection would change to:
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
if collectionView == collectionViewOne {
return itemSource1.count
}
else {
return itemSource2.count
}
}
Do the same for the rest of the collectionView functions.