how to convert a collection view to circular icarousel in swift - ios

Question

I want to show cells in collection view like in circular list, means that after the last cell of the collection view, on scrolling the collection view shows the first cell again, like circular linklist
I have tried using icrousel, but as icarosuel deals with views only, I don't want to finish the collection view completely and start again with icarousel, so is there any way I can make me collection view circular
this is my collectionView code
func collectionView(_ collectionView: UICollectionView,
cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell =
collectionView.dequeueReusableCell(withReuseIdentifier:
"CellName", for: indexPath as IndexPath) as! CellName
let gigModel = self.datasoruce?[indexPath.row]
cell.lblTitle.text = gigModel?.title
cell.btnPrice.setTitle(gigModel?.getPriceAccordingToGigType(),
for: .normal)
cell.itemImageView.sd_setImage(with: URL(string:
(gigModel?.getPhotoPath())!), placeholderImage:
UIImage.init(named: "place_holder"))
cell.itemImageView.layer.cornerRadius = 10.0
if Utilities.isValidString(object: gigModel?.adminId as
AnyObject) {
cell.btnStar.isHidden = false
}
else {
cell.btnStar.isHidden = true
}
return cell
}
and I want this to be circular list.

Answer 1

I tried to create sample project and it was pretty simple, here is example code how you can implement "infinite" scroll
class ViewController: UIViewController, UICollectionViewDelegate, UICollectionViewDataSource {
var array: [Any] = [0,1,2,3,4,5,6,7,8,9]
override func viewDidLoad() {
super.viewDidLoad()
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return Int(Int16.max) // Int.max cause crash
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath) as! MyCell
let correctIndex = indexPath.row >= array.count ? indexPath.row % array.count : indexPath.row
cell.nameLabel.text = "\(array[correctIndex])"
return cell
}
}
Hope it will help you

Answer 2

//Use Below code to get next cell.
func scrollToNextCell(){
//get Collection View Instance
let collectionView:UICollectionView;
//get cell size
let cellSize = CGSizeMake(self.view.frame.width, self.view.frame.height);
//get current content Offset of the Collection view
let contentOffset = collectionView.contentOffset;
//scroll to next cell
collectionView.scrollRectToVisible(CGRectMake(contentOffset.x + cellSize.width, contentOffset.y, cellSize.width, cellSize.height), animated: true);
}