ios – Loading Picture into Assortment View cell in swift

I’m making an attempt to load the picture from url and present it into assortment view cell. I’m following MVVM . Right here is the URL return single picture https://picsum.photographs/200 . I’ve set the cell with delegate and knowledge supply , I’m not capable of finding out why the picture will not be reddening into assortment view.

Right here is the code for community layer..

import Basis
import UIKit

enum ImageFetchingError: Error {
    case timeout
    case unknown
}

protocol CatImageCellModel {
    func fetchCatImage(completion: @escaping (Consequence) -> Void)
}

class NetworkLayer: CatImageCellModel  {

    
    func fetchCatImage(completion: @escaping (Consequence) -> Void) {
        
        
        let url = "https://picsum.photographs/200"
        guard let _url = URL(string: url) else {
            return
        }
        
        URLSession.shared.dataTask(with: _url) { knowledge, response, error in
            guard
                let knowledge = knowledge,
                let picture = UIImage(knowledge: knowledge),
                let response = response as? HTTPURLResponse,
                response.statusCode >= 200 && response.statusCode < 300 else {
                completion(.failure(.unknown))
                return
            }
            completion(.success(picture))
        }.resume()
    }
}

Right here is the code for view mannequin..

import Basis
import UIKit

class ViewModel {
    
    non-public let networkLayer: NetworkLayer
    public var picture: UIImage = UIImage()
    
    init(networkLayer: NetworkLayer = NetworkLayer()) {
        self.networkLayer = networkLayer
    }
    
    func fatchImage() {
        networkLayer.fetchCatImage { [weak self] end in
            change consequence {
            case .success(let picture):
                self?.picture = picture
                print(picture)
            case .failure(let error):
                print(error.localizedDescription)
            }
        }
    }
}

Right here is the code for view..

import UIKit

class ViewController: UIViewController, UICollectionViewDataSource, UICollectionViewDelegate {
    
    @IBOutlet weak var collectionView: UICollectionView!
    non-public var viewModel = ViewModel()
    
   
    override func viewDidLoad() {
       viewModel.fatchImage()
        collectionView.delegate = self
        collectionView.dataSource = self
        collectionView.reloadData()
    }
    
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection part: Int) -> Int {
         1
    }
    
    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        //
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "myCell", for: indexPath) as! CollectionViewCell
        // return card
        let picture = viewModel.picture
        cell.imageView.picture = picture
        return cell
    }
}

Right here is the cell code ..

import UIKit

class CollectionViewCell: UICollectionViewCell {
    
    @IBOutlet weak var imageView: UIImageView!
    
    override func prepareForReuse() {
        imageView = nil
        imageView?.alpha = 0.5
    }
}

Right here is the consequence after I run the app which is clean..

screenshot…
(https://i.sstatic.web/v8nKFZIo.png)