array of images from json in to the CollectionView Custom cell swift4 - ios

Question

I want to pass the data from my JSON Url to my collection view cell, so after parsing my json I have got array of URL links, the question is how to send it to cell imageView?
here is my code
import UIKit
class ItemsListViewController: UIViewController, UICollectionViewDelegate, UICollectionViewDataSource{
var myItems = [Item]()
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return myItems.count
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CollectionViewCell", for: indexPath) as! CollectionViewCell
cell.itemPriseLabel.text = myItems[indexPath.row].currentPrice
let imageUrl = myItems[indexPath.row].productImageUrl
print(imageUrl)
cell.itemImage.image? = imageUrl[indexPath.row]
return cell
}
var category1: Categories?
#IBOutlet weak var colectionViewVariable: UICollectionView!
override func viewDidLoad() {
super.viewDidLoad()
downloadJSON3 {
self.colectionViewVariable.reloadData()
}
colectionViewVariable?.dataSource = self
colectionViewVariable?.delegate = self
// Do any additional setup after loading the view.
}
}

Answer 1

func getDataFromUrl(url: URL, completion: #escaping (Data?, URLResponse?, Error?) -> ()) {
URLSession.shared.dataTask(with: url) { data, response, error in
completion(data, response, error)
}.resume()
}
func downloadImage(url: URL) {
print("Download Started")
getDataFromUrl(url: url) { data, response, error in
guard let data = data, error == nil else { return }
print(response?.suggestedFilename ?? url.lastPathComponent)
print("Download Finished")
DispatchQueue.main.async() {
self.imageView.image = UIImage(data: data)
}
}
}
Duplicate: Answer found HERE I've stacked it into one concise answer but you should definitely read the answer as it is in the link as it is more complete and better altogether.

Answer 2

func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CollectionViewCell", for: indexPath) as! CollectionViewCell
cell.itemPriseLabel.text = myItems[indexPath.row].currentPrice
if let imageUrl = myItems[indexPath.row].productImageUrl.first {
URLSession.shared.dataTask(with: imageUrl, completionHandler: { (data, response, error) in
guard let data = data, response != nil, error == nil else {return}
DispatchQueue.main.async(execute: { () -> Void in
let image = UIImage(data: data)
if let cell = collectionView.cellForItem(at: indexPath) as? CollectionViewCell {
cell.itemImage.image = image
}
})
}).resume()
}
return cell
}