iOS Swift, Update UITableView custom cell label outside of tableview CellForRow using tag

Question

Setup (Swift 1.2 / iOS 8.4):

I have UITableView custom cell (identifier = Cell) inside UIViewController. Have two buttons (increment/decrement count) and a label (di

Answer 1

Use tableView.reloadData() to reload your tableView content each time you click a button.

let text = "something"
 func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {

    let cell:FoodTypeTableViewCell = self.tableView!.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath) as! FoodTypeTableViewCell

    cell.addBtn.tag = indexPath.row // Button 1
    cell.addBtn.addTarget(self, action: "addBtn:", forControlEvents: .TouchUpInside)

    cell.subBtn.tag = indexPath.row // Button 2
    cell.subBtn.addTarget(self, action: "subBtn:", forControlEvents: .TouchUpInside)

    cell.countLabel.text = something
    return cell
}

func addBtn(sender: AnyObject) -> Int {
    let button: UIButton = sender as! UIButton
    count = 1 + count
    println(count)
    something = "\(count)"
    self.tableView.reloadData()
    return count
}

func subBtn(sender: AnyObject) -> Int {
    let button: UIButton = sender as! UIButton
    if count == 0 {
        println("Count zero")
    } else {
        count = count - 1
    }
    println(count)
    something = "\(count)"
    self.tableView.reloadData()
    return count
}

Update1

After your comments ... you have an array (one value for each food) like this, and whenever you click on a button, you take the index of the row the contains that button, then use that index to retrive the value of count from your array, then reload the table view content.