UIImage and UILabel disappearing after doing UIRefreshControl - swift

Question

UIImages and UILabel are disappearing in some collectionViews after refreshing inside my app.
here is my code. You can see what is wrong in the picture, the left image is before refreshing and there is a discount price label and after refreshing the simulator, it is gone. getProductLatestData(), getBestSellingData() are the Alamofire get request for API.
//For Refresh Controller
//----------------------
var player : AVAudioPlayer
var refreshController : UIRefreshControl = {
let refreshController = UIRefreshControl()
refreshController.addTarget(self, action: #selector(updateData), for: .valueChanged)
return refreshController
}()
//----------------------
//For Update Data when scroll to top
//----------------------------------
#objc func updateData(){
//To play sound when scroll top
//-----------------------------
let pathToSound = Bundle.main.path(forResource: "Flick", ofType: "wav")
let url = URL(fileURLWithPath: pathToSound!)
do {
player = try AVAudioPlayer(contentsOf: url)
player?.play()
} catch let error {
print(error.localizedDescription)
}
//-----------------------------
//Fetch Latest Products Data
getProductLatestData(pageNumber: 0, pageSize: 0)
//Fetch BestSelling Products Data
getBestSellingData(pageNumber: 0, pageSize: 0)
//Fetch Promotion Products Data
getPromotionProductsData(pageNumber: 0, pageSize: 0)
//Fetch Products By Category
getProductsByCat(pageNumber: 0, pageSize: 0)
//Fetch Reward Products
getRewardProducts()
self.refreshController.endRefreshing()
}
if collectionView == latestItemCV {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "latestItemCell", for: indexPath) as! PromotionItemsCollectionViewCell
if let percent = latestItemData[indexPath.row].promotePercent {
if percent != 0 {
cell.percentOff.isHidden = false
cell.percentOff.text = " \(percent) % Off "
cell.percentOffBackground.isHidden = false
}
else{
cell.percentOff.isHidden = true
cell.percentOffBackground.isHidden = true
}
}
if let name = latestItemData[indexPath.row].name {
cell.itemsName.text = name
}
else{
cell.itemsName.text = "-"
}
if let url = latestItemData[indexPath.row].url {
cell.itemsImageView.sd_setImage(with: URL(string: url), placeholderImage: UIImage(named: "placeholder"))
}
//----------------------------------

Answer 1

Thanks to #larme I recheck the code here is how I fixed it, I added those disappeared labels isHidden = false also as I did isHidden = true for them.
if let promotionPrice = latestItemData[indexPath.row].promotePrice {
if promotionPrice != 0 {
cell.originalItemsPrice.text = "\(setCommaForPrice(price: Int(promotionPrice))) Ks"
cell.promotionPercent.isHidden = false
cell.promotionLine.isHidden = false
}
else{
if let orPrice = latestItemData[indexPath.row].originalPrice {
cell.originalItemsPrice.text = "\(setCommaForPrice(price: Int(orPrice))) Ks"
}
cell.promotionPercent.isHidden = true
cell.promotionLine.isHidden = true
}
}