How to Set UITableViewCellStyleSubtitle and dequeueReusableCell in Swift?

Question

I\'d like a UITableView with subtitle-style cells that use dequeueReusableCellWithIdentifier.

My original Objective-C code was

Answer 1

Basically the same as other answers, but I get around dealing with nasty optionals (you can't return nil from -tableView:cellForRow:atIndexPath: in Swift) by using a computed variable:

Swift 3

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

    let cell: UITableViewCell = {
        guard let cell = tableView.dequeueReusableCell(withIdentifier: "UITableViewCell") else {
            // Never fails:
            return UITableViewCell(style: UITableViewCellStyle.value1, reuseIdentifier: "UITableViewCell")
        }
        return cell
    }()

    // (cell is non-optional; no need to use ?. or !)

    // Configure your cell:
    cell.textLabel?.text       = "Key"
    cell.detailTextLabel?.text = "Value"

    return cell
}

---

Edit:

Actually, it would be better to dequeue the cell using: tableView.dequeueReusableCell(withIdentifier:for:) instead.

This later variant of the function automatically instantiates a new cell if no one is available for reusing (exactly what my code does explicitly above), and therefore never returns nil.

Answer 2

If you'd rather avoid optionality, you can make a subclass of UITableViewCell that looks something like this:

class SubtitleTableViewCell: UITableViewCell {

    override init(style: UITableViewCellStyle, reuseIdentifier: String?) {
        super.init(style: .subtitle, reuseIdentifier: reuseIdentifier)
    }

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

Then register it using:

override func viewDidLoad() {
    super.viewDidLoad()
    self.tableView.register(SubtitleTableViewCell.self, forCellReuseIdentifier: reuseIdentifier)
}

This allows your cell customization code to be really nice:

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

    let cell = tableView.dequeueReusableCell(withIdentifier: reuseIdentifier, for: indexPath)

    cell.textLabel?.text = "foo"
    cell.detailTextLabel?.text = "bar"

    return cell
}

Answer 3

Make sure that you are not registering any cell to the tableview.

If you did so, dequeueReusableCellWithIdentifier will always give a non optional cell so UITableViewCellStyle.Subtitle will never initiate.

Answer 4

If you are not using your own Custom Cell. Simply register UITableViewCell through code. Then you can prefer code.

Else select storyboard, select your TableViewCell -> Goto Attribute Inspector and choose the desired style as shown below.

Answer 5

Just building upon memmons' answer by cleaning it up Swift 2 style...

let cell = tableView.dequeueReusableCellWithIdentifier(reuseIdentifier) ?? UITableViewCell(style: UITableViewCellStyle.Subtitle, reuseIdentifier: reuseIdentifier)

cell.detailTextLabel?.text = "some text"

return cell

Swift 3:

let cell = tableView.dequeueReusableCell(withIdentifier: cellIdentifier) ?? UITableViewCell(style: .subtitle, reuseIdentifier: cellIdentifier)

cell.detailTextLabel?.text = ""

return cell

Answer 6

Perfect as suggested by Michael G. Emmons, but in Xcode 6.1 using

if !cell { .....

I get this error:

Optional type '@|value UITableViewCell?' cannot be used as boolean ; test for '!= nil' instead

The accepted syntax is:

if cell == nil { ...