reloadData() fatal error: unexpectedly found nil while unwrapping an Optional value

Question

The app crashes at the line

class ImageValueCell: UITabl         


        

Answer 1

If you are calling addImagesValue before the awakeFromNib is called, then your code will empty the array. I don't think that is what you want. Here is a better solution:

class ImageValueCell: UITableViewCell, UITableViewDelegate, UITableViewDataSource {

    @IBOutlet weak var imagesList: UITableView!
    var imageArray: NSArray = NSArray() {
        didSet {
            // whenever the imageArray changes, reload the imagesList
            if let imagesList = imagesList {
                imagesList.reloadData()
            }
        }
    }

    override func awakeFromNib() {
        // why isn't the below done from inside the nib file? That's how I would do it.
        imagesList.delegate = self
        imagesList.dataSource = self
        imagesList.reloadData()
    }

    func addImagesValue(objectList: NSMutableArray, machine: WIFIMachine){
        imageArray = objectList
    }

}