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

make sure to remove register class if you are using storyboard as it will overwrite the storyboard and all the outlink associated with it

please check https://stackoverflow.com/a/26350795/4453583

it works for me =)

Answer 2

what I did for making that working is something like this:

class MainViewController: UIViewController {

    // ...

    @IBOutlet var tableView: UITableView

    override func viewDidLoad() {
        super.viewDidLoad()

        self.tableView.registerNib(UINib(nibName: "UICustomTableViewCell", bundle: nil), forCellReuseIdentifier: "UICustomTableViewCell")

        // ...
    }

    // ...

}

NOTE: If I use the –registerClass(_: forCellReuseIdentifier:) method, the xib file won't be loaded, therefore the actual custom interface will not appear unless you add the content programatically to the cell. if you'd like to load the interface from a nib file, you need to register the cell with its nib.

---

conforming the essential protocols:

extension MainViewController: UITableViewDataSource {
    
    func tableView(tableView: UITableView!, numberOfRowsInSection section: Int) -> Int {
        return 3
    }
    
    func tableView(tableView: UITableView!, cellForRowAtIndexPath indexPath: NSIndexPath!) -> UITableViewCell! {
        let cell: UICustomTableViewCell = tableView.dequeueReusableCellWithIdentifier(UICustomTableViewCell.reuseIdentifier) as UICustomTableViewCell
        println(cell)
        return cell;
    }
    
}

//

extension MainViewController: UITableViewDelegate {
    
    func tableView(tableView: UITableView!, heightForRowAtIndexPath indexPath: NSIndexPath!) -> CGFloat {
        return 44.0
    }
    
}

---

and the custom cell class was a very generic one with a meaningful name as UICustomTableViewCell:

class UICustomTableViewCell: UITableViewCell {

    class var reuseIdentifier: String {
        get {
            return "UICustomTableViewCell"
        }
    }
    
    override func awakeFromNib() {
        super.awakeFromNib()
        // Initialization code
    }

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

        // Configure the view for the selected state
    }
    
}

---

with a quite random interface:

and these settings of custom class and reuse identifier:

---

and the final result on my screen is as I expected with 3 rows:

NOTE: for further customisation of the custom cells you may need extend the code above.

UPDATE

with UISearchBar, the final result would be like this:

Answer 3

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

Answer 4

You must remember to register the cell for any tableView that use it -- including searchDisplayController.tableView.

Answer 5

Adding self before tableView fixes the issues:

var cell = self.tableView.dequeueReusableCellWithIdentifier(kCellIdentifier, forIndexPath: indexPath) as MyCell!