nil label for custom UICollectionCell - ios

Question

EDIT: seems like same question as this
I made collection view with custom layout and cell but my cell's positions were a little off so I decided to number them so that I could debug it easier. I followed this guy's answer to number my cell using labels. Somehow myLabel was nil and caused my app to crash.
I believe I have connected the outlets correctly but maybe someone could provide a list for me to check if I am doing anything wrong.
ViewController
import UIKit
class ViewController: UIViewController, UICollectionViewDataSource, UICollectionViewDelegate {
#IBOutlet var gridView: UICollectionView!
private let reuseIdentifier = "DesignCell"
private let numberOfSections = 1
private let numberOfCircles = 48
override func viewDidLoad() {
super.viewDidLoad()
self.gridView.registerClass(MyCell.self, forCellWithReuseIdentifier: reuseIdentifier)
}
func numberOfSectionsInCollectionView(collectionView: UICollectionView) -> Int {
return numberOfSections
}
func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return numberOfCircles
}
func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCellWithReuseIdentifier(reuseIdentifier, forIndexPath: indexPath) as! MyCell
cell.myLabel.text = String(indexPath.item) // myLabel is nil and causes a crash
return cell
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
}
GridLayout (my custom layout)
import UIKit
import Darwin
class GridLayout: UICollectionViewLayout {
private let numberOfColumns = 12
private let numberOfRows = 4
private var cache = [UICollectionViewLayoutAttributes]()
private var contentHeight: CGFloat = 0
private var contentWidth: CGFloat {
let insets = collectionView!.contentInset
return CGRectGetWidth(collectionView!.bounds) - insets.left - insets.right
}
override func prepareLayout() {
// some calculation i did for my cells
}
override func collectionViewContentSize() -> CGSize {
return CGSize(width: contentWidth, height: contentHeight)
}
override func layoutAttributesForElementsInRect(rect: CGRect) -> [UICollectionViewLayoutAttributes]? {
var layoutAttributes = [UICollectionViewLayoutAttributes]()
for attr in cache {
if CGRectIntersectsRect(attr.frame, rect) {
layoutAttributes.append(attr)
}
}
return layoutAttributes
}
}
MyCell
import UIKit
class MyCell : UICollectionViewCell {
#IBOutlet weak var myLabel: UILabel!
}

Answer 1

Try to remove this line within viewDidLoad() in your ViewController class:
self.gridView.registerClass(MyCell.self, forCellWithReuseIdentifier: reuseIdentifier)
It's not needed since you have created your UICollectionView in Storyboard, connected to your dataSource and delegate, and you have added all the required methods:
numberOfItemsInSection
cellForItemAtIndexPath