William Robinson William Robinson - 7 months ago 55
Swift Question

Label Outlet On Custom UICollectionViewCell In Swift Causing Optional.None Crash

I have a collectionViewController that I want to display a bunch of custom UICollectionViewCells with some labels on them. Unfortunately whenever I try and access the custom UICollectionViewCell's label it causes a crash with:

Console


fatal error: Can't unwrap Optional.None


Window


Thread1: EXC_BAD_INSTRUCTION(code=EXC_1386_INVOP, subcode=0x0)


I'm trying to access the label like so:

cell.name.text = names[indexPath!.item]


Perhaps this comes from my outlet label being nil? But looking around for answers nothing has worked, and because I'm not really sure what the issue is adding ?/! in my code isn't really helping.

MyCustomUICollectionViewController

class ScrambledTextCollectionViewController: UICollectionViewController {

var names: String[] = ["Anna", "Alex", "Brian", "Jack"]

override func viewDidLoad() {
super.viewDidLoad()

// Register cell classes
self.collectionView.registerClass(MyCustomCollectionViewCell.self, forCellWithReuseIdentifier: reuseIdentifier)

}

override func numberOfSectionsInCollectionView(collectionView: UICollectionView?) -> Int {
return 1
}

override func collectionView(collectionView: UICollectionView?, numberOfItemsInSection section: Int) -> Int {
return names.count
}

override func collectionView(collectionView: UICollectionView?, cellForItemAtIndexPath indexPath: NSIndexPath?) -> UICollectionViewCell? {
var cell = collectionView?.dequeueReusableCellWithReuseIdentifier("Cell", forIndexPath: indexPath) as MyCustomCollectionViewCell

cell.name.text = names[indexPath!.item]

return cell
}
}


MyCustomCollectionViewCell

class MyCustomCollectionViewCell: UICollectionViewCell {

@IBOutlet var name: UILabel
init(frame: CGRect) {
super.init(frame: frame)
}
}

Answer

Found the answer here

Remove, self.collectionView.registerClass(MyCustomCollectionViewCell.self, forCellWithReuseIdentifier: reuseIdentifier)

Read link for detailed reason why