Hi,

Step's required to use collectionView in Swift

1- Add collection View in your project

2- Set the delegate for collection view in controller

3- Collection view has a prototype cell, you can design accordingly you want.

4- Create a subclass of UICollectionViewCell (You can name it as - MyCollectionViewCell).

5- Assign class to prototype cell

6- Create the outlet for the CollectionViewCell elements

7- set an identifier for the cell (For Example - "CollectionCellID")

8- Implement the following code in your ViewController Class

also, Assign a value to

let reuseIdentifier = "CollectionCellID"

9- Create an array for element like
 

var arrayOfelement : NSMutableArray = []
for  i in 1...15 {
            arrayOfelement.addObject(i)
            
        }

//MARK : DELEGATE METHOD FOR COLLECTION VIEW
//These method are in ViewController.swift class

func numberOfSectionsInCollectionView(collectionView: UICollectionView) -> Int {
        return 1
    }
    
    func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        
    return arrayOfelement.count
    }
    
    func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCellWithReuseIdentifier(reuseIdentifier, forIndexPath: indexPath) as! MyCollectionViewCell
        cell.setCellData(String(arrayOfelement.objectAtIndex(indexPath.row))
        return cell
    }
    
    func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) {
        print("selected item == \(indexPath.row)")
    }

10 - In your MyCollectionVIewCell create a method setCellData (Here i have a lable in my Cell , So here i am setting the text to my Lable)

11 - Here is the code for my MyCollectionViewCell Class

class MyCollectionViewCell: UICollectionViewCell {
    @IBOutlet weak var txtlbl : UILabel?
    
    
    func setCellData(text:String) -> Void {
        print("Hello sdat == \(text)")
        txtlbl?.text = text
        
    }
}