How to properly set ImageView in a UITableViewCell with SDWebImage in Swift 3

Question

I'm new to Swift and iOS and have a situation where I would like to take an array of URL strings and populate a ImageView within a UITableViewCell, which I have made an appropriate class for, called MyTableViewCell.

It's crashing and I am getting the error:

"fatal error: unexpectedly found nil while unwrapping an Optional value"

Which I can see is happening in the viewDidLoad() when the line imageTableView.datasource = self runs.

I am setting the data and delegate in the view as so:

override func viewDidLoad() {
    super.viewDidLoad()
    imagesTableView.dataSource = self
    imagesTableView.delegate = self
}

Below, imageUrls is an array of Strings.

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

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

    cell.imageView.sd_setImage(with: URL(string: imageUrls[indexPath.row]))

    return cell
}

I have an outlet to the cell like so in the class:

@IBOutlet var imagesTableView: UITableView!

My question is, what is the proper way to do this with swift 3 and SDWebImage, and why/where is the nil value from the imagesTableView occurring?

It may be worth noting that I have also tried hard-coding some string URL values into the imageUrls to ensure that that was not the problem (I get the same error with hardcoded values).

Answer 1

It turns out that although I had an outlet connected, it somehow lost the reference - I deleted the whole tableview and subviews and recreated and connected them, and the error was gone. Something funky must have happened when I drag and dropped for the outlet previously.