Custom UITableViewCell register class in Swift

Question

In my application, I fill the table on the basis of the array. The table uses custom UITableViewCell. Everything works fine, table is filled. Then I add Search Display Contr

Answer 1

As error suggest you are getting your cell or UITestField nil and Swift doesn't support method call on nil object that's why you are getting crash. you can prevent crash by checking the object is nil or not as bellow

if var label = cell.cellMyCity{
    label.text = cellText
}

EDIT

I think I got what is the problem here...

You have drag-n-drop UISearchBar in your storyboard, So by defaults all data source and delegate set to your Controller say, ViewController(class in which you override UITableView DataSource methods) and in that ViewController you register MyCell class as your customize class. So your tableView displays perfect but when you type something to UISearchBar, same DataSource methods (ViewController) called and there as well, you registers MyCell for searchResultsTableView (UISearchDisplayController tableView thats display search result), but that doesn't know about MyCell and that's why cell.cellMyCity is coming as nil in case of search, that means searchResultsTableView expect the default UITableViewCell and you are not setting anything for default cell like -

cell.textLabel.text = countryList[indexPath.row]

this whole scenario you can observe by changing you DataSource methods as bellow

    override func tableView(tableView: UITableView!, cellForRowAtIndexPath indexPath: NSIndexPath!) -> UITableViewCell! {

    var cell = tableView.dequeueReusableCellWithIdentifier(kCellIdentifier) as MyCell!
    if cell == nil {
        //tableView.registerNib(UINib(nibName: "UICustomTableViewCell", bundle: nil), forCellReuseIdentifier: "UICustomTableViewCell")
        tableView.registerClass(MyCell.classForCoder(), forCellReuseIdentifier: kCellIdentifier)

        cell = MyCell(style: UITableViewCellStyle.Default, reuseIdentifier: kCellIdentifier)
    }
    if var label = cell.cellMyCity{
        label.text = countryList[indexPath.row]
    }
    else{
        cell.textLabel.text = countryList[indexPath.row]
    }
    return cell
}

As far as Solution is concern, there could be two possible solution..

A). Don't use searchResultsTableView (provided by UISearchDisplayController) and display your search results in the same tableView that you have in your ViewController. For that what you can do is - listen to the UISearchBar delegates when user type some thing in UISearchBar get your result datasource (May be in different array) by Predicates and Display results in the same UITableView.

B). Customize UISearchDisplayController and use your custom cell (i.e MyCell) in searchResultsTableView