Issue with displaying tableview cell image with AlamofireImage

Question

I am downloading and showing thumbnails from server with AlamofireImage , the downloading works fine but when I scroll tableivew cell image changes all the time , I have searched and did not find any solution for example prepareForReuse in custom cell calls. Here is my code :

  func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {

        let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath) as! TrendingCell

        let trendingIndex = trendingArray[indexPath.row] as! [String:Any]

        if let media = trendingIndex["thumbnails"] as? [String:Any] {
            if let thumbnail = media["medium"] as? [String:Any] {
                thumbnailURL = String(describing:thumbnail["url"]!)
            }
        }



        Alamofire.request(thumbnailURL).responseImage { response in
            if let image = response.result.value {
                cell.thumbnail.image = image
             }

        }

        return cell
    }

How to avoid image changing when user scrolls tableview ?

https://stackoverflow.com/questions/46199203/downloading-uiimage-via-alamofireimage/46199246#46199246 — Salman Ghumsani, Oct 09 '17 at 15:07
I would suggest using [SDWebImage](https://github.com/rs/SDWebImage) library for images — Srdjan, Oct 09 '17 at 15:09
Your cells are most likely being reused. Try doing `cell.thumbnail.image = nil` after you initialise you `UITableViewCell` — jackchmbrln, Oct 09 '17 at 15:32

score 1 · Answer 1 · answered Oct 09 '17 at 15:43

As Salman Ghumsani mentioned here :

we can use AlamofireImage extension to set a default thumbnail like this :

  //Download and set thumbnail
        if let imageURL = URL(string: thumbnailURL), let placeholder = UIImage(named: "Default") {
            cell.thumbnail.af_setImage(withURL: imageURL, placeholderImage: placeholder) //set image automatically when download compelete.
        }

Now when you scroll table view images did not change.

Issue with displaying tableview cell image with AlamofireImage

1 Answers1