UICollectionView error using Swift

Question

I am getting this error, trying to use a UICollectionView in Swift:

NSInternalInconsistencyException', reason: 'attempt to register a cell class which is not a subclass of UICollectionViewCell ((null))

But I think I am registering the cell:

1. ViewDidLoad:

   override func viewDidLoad()
   {
       super.viewDidLoad()
       self.collectionView.registerClass(NSClassFromString("CollectionCell"),forCellWithReuseIdentifier:"CELL")
   }
   

2. cellForItemAtIndexPath:

   func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath:NSIndexPath)->UICollectionViewCell
   {
      var  cell = collectionView.dequeueReusableCellWithReuseIdentifier("CELL", forIndexPath: indexPath) as CollectionCell
   
       cell.titleLabel.text="cellText"
       return cell
   }
   

and the cell class:

    class CollectionCell: UICollectionViewCell
    {

        @IBOutlet var titleLabel : UILabel
        init(coder aDecoder: NSCoder!)
        {
            super.init(coder: aDecoder)

        } 
     }

Any help appreciated

Solution 1

You need to pass your sub-class of UICollectionViewCell, in the Swift style, to registerClass:

self.collectionView.registerClass(CollectionCell.self, forCellWithReuseIdentifier:"CELL")

Solution 2

If your are not using any custom class just use in ViewDidLoad

myCollectionView!.registerClass(UICollectionViewCell.self, forCellWithReuseIdentifier: "Cell")

Solution 3

myCollectionView!.registerClass(UICollectionViewCell.classForCoder(), forCellWithReuseIdentifier: "cellID")

is the code recommended. Worked for me. Hope it helps.

Solution 4

Try this: self.collectionView.registerClass(CollectionViewCell.self,forCellWithReuseIdentifier:"CELL")

Solution 5

For your Cell:

class CollectionCell: UICollectionViewCell
{
@IBOutlet var titleLabel : UILabel
init(coder aDecoder: NSCoder!)
{
    super.init(coder: aDecoder)
}
}

For your ViewController:

import UIKit
class NextViewController: UIViewController
{
@IBOutlet var collectionView : UICollectionView
var ListArray=NSMutableArray()
 override func viewDidLoad()
{
super.viewDidLoad()

 var nipName=UINib(nibName: "GalleryCell", bundle:nil)
collectionView.registerNib(nipName, forCellWithReuseIdentifier: "CELL")

for i in 0..70
{
     ListArray .addObject("C: \(i)")
}
}



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

func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath      indexPath:NSIndexPath)->UICollectionViewCell
{
    var  cell = collectionView.dequeueReusableCellWithReuseIdentifier("CELL", forIndexPath: indexPath) as GalleryCell
   cell.titleLabel.text="\(ListArray.objectAtIndex(indexPath.item))"
   return cell
}

func collectionView(collectionView : UICollectionView,layout  collectionViewLayout:UICollectionViewLayout,sizeForItemAtIndexPath indexPath:NSIndexPath) -> CGSize
{
return CGSizeMake(66, 58)
}

override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}

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