App crashed on cell initialisation

Question

This is the custom class for my cell:

class showSugTableViewCell: UITableViewCell {


override init(style: UITableViewCellStyle, reuseIdentifier: String!) {
    super.init(style: .Default, reuseIdentifier: "showSug")
}

required init?(coder aDecoder: NSCoder) {
    fatalError("init(coder:) has not been implemented")
}

override func awakeFromNib() {
    super.awakeFromNib()


    let categoryLbl = UILabel()
    categoryLbl.frame = CGRectMake(20, 10, 100, 20)
    categoryLbl.text = "Text"
    contentView.addSubview(categoryLbl)



}

override func setSelected(selected: Bool, animated: Bool) {
    super.setSelected(selected, animated: animated)


}

}

And here's the code from cellForRowAtIndexPath :

   let cell = tableView.dequeueReusableCellWithIdentifier("showSug") as! showSugTableViewCell


        return cell

The problem is that my app crashes on the cell initialisation, and the log says:

fatal error: unexpectedly found nil while unwrapping an Optional value

How can I solve this?

EDIT:

I changed my code to this:

   let cellTemp = self.sugTableView.dequeueReusableCellWithIdentifier("showSug")
        var cell = cellTemp as? showSugTableViewCell!

        if cell == nil {
            self.sugTableView.registerNib(UINib(nibName: "showSugTableViewCell", bundle: nil), forCellReuseIdentifier: "showSug")
            self.sugTableView.registerClass(showSugTableViewCell.classForCoder(), forCellReuseIdentifier: "showSug")

            cell = showSugTableViewCell(style: UITableViewCellStyle.Default, reuseIdentifier: "showSug")
        }


        return cell!

However, the app now crashed on the return statement.

Answer 1

Try following case to confirm the issue - I strongly believe following 2 issues might be your problem

if let retCell = tableView.dequeueReusableCellWithIdentifier("showSug") {
    if let cell = retCell as? showSugTableViewCell {
        //use the cell object
    }else {
        //1. cell may not be of type showSugTableViewCell so filing t convert
//If it is the case check in identifier you set in nib
    }
}else {
    //2. tableView.dequeueReusableCellWithIdentifier may not be returning for "showSug"
//Check class type it return table cell
}