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:

ViewDidLoad:

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

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

Matt Gibson · Accepted Answer · 2014-06-12 09:18:36Z

17

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

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

answered Jun 12, 2014 at 9:18

Matt Gibson

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2 Comments

ICL1901 Over a year ago

Thanks! Progress, Now I get an "use of unimplemented initializer 'init(frame:)", but I'm getting there!

ICL1901 Over a year ago

That this solves.. init(frame: CGRect) { super.init(frame: frame) } Thank you again.

Jibin Jose · Accepted Answer · 2014-10-30 11:42:35Z

3

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

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

edited Oct 30, 2014 at 11:42

answered Oct 30, 2014 at 11:36

Jibin Jose

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Comments

ppalancica · Accepted Answer · 2015-04-01 10:03:55Z

3

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

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

answered Apr 1, 2015 at 10:03

ppalancica

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Comments

PREMKUMAR · Accepted Answer · 2014-06-12 09:36:59Z

1

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.
}
}

edited Jun 12, 2014 at 9:36

user3733309

answered Jun 12, 2014 at 9:24

PREMKUMAR

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2 Comments

ICL1901 Over a year ago

Thanks, but I prefer to stick with registerClass rather than registerNib.

ICL1901 Over a year ago

But I'll keep this for next time.. +1

user2545330 · Accepted Answer · 2014-06-12 10:30:57Z

1

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

edited Jun 12, 2014 at 10:30

answered Jun 12, 2014 at 8:06

user2545330

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1 Comment

ICL1901 Over a year ago

Thanks for answering.. Changing as you suggest results in the following console output: 0x1001bffeb: leaq 0x16067(%rip), %rax ; "Swift dynamic cast failed" 0x1001bfff2: movq %rax, 0x77c67(%rip) ; gCRAnnotations + 8 0x1001bfff9: int3 0x1001bfffa: nopw (%rax,%rax)

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