CollectionView cellForItemAt indexPath does deque cells but cell's view is nil

Question

guard let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "identifier", for: indexPath) as? MYVerticalCell else {
  fatalError("Couldn't deque `Vertical Cell`")
}

cell.view.backgroundColor = .black
return cell

view outlet is connected with cell

Throws unexpectedly found nil while unwrapping an optional value

Answer 1

First create xib of custom cell with identifier,

Register cell before use, using below example,

tableView.register(UINib(nibName: "custCell", bundle: nil), forCellReuseIdentifier: "custCell")

And then use below in "func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell"

var cell = tableView.dequeueReusableCell(withIdentifier: "custCell") as? CustCell

if (cell == nil) {
    cell = CustCell(style: UITableViewCellStyle.default, reuseIdentifier: "custCell"
}