Set identifier of table cell view programmatically - cocoa

Question

I have table view like this (in a mac cocoa application):
In the leftmost panel you can see that I have set the identifier of the Table Cell View to "1". That's fine if you just have 2 columns, once the number goes up, this approach will become cumbersome. Can I do this programmatically?
Here is an example:
import Cocoa
class ViewController: NSViewController, NSTableViewDelegate, NSTableViewDataSource {
private var dataModel = DataModel()
private var answer = 0
private var keyData: (Int, [Int]) = (0, []) {
didSet {
tbl.reloadData()
}
}
#IBOutlet weak var questionIndex: NSTextField!
#IBOutlet weak var tbl: NSTableView!
#IBAction func replay(_ sender: Any) {
dataModel = DataModel()
questionIndex.stringValue = "0:"
answer = 0
updateModel()
}
#IBAction func forward(_ sender: NSButton) {
if sender.tag == 1 {
answer += keyData.0
}
updateModel()
}
func updateModel() {
let group = dataModel.nextGroup()
if let g = group {
self.keyData = g
let s = questionIndex.stringValue
questionIndex.stringValue = String(Int(String(s.characters.dropLast()))! + 1) + ":"
return
}
let alert = NSAlert()
alert.messageText = "You did have \(answer) on your mind, didn't you?"
alert.runModal()
}
override func viewDidLoad() {
super.viewDidLoad()
for (n, col) in tbl.tableColumns.enumerated() {
col.identifier = String(n)
}
updateModel()
}
func numberOfRows(in tableView: NSTableView) -> Int {
return keyData.1.count / 8 + 1
}
func tableView(_ tableView: NSTableView, viewFor tableColumn: NSTableColumn?, row: Int) -> NSView? {
let colId = tableColumn!.identifier
let colIndex = Int(colId)!
let index = (row * 8) + colIndex
let cell = tbl.make(withIdentifier: colId, owner: self) as! NSTableCellView
if 0 <= index && index < keyData.1.count {
cell.textField!.integerValue = keyData.1[index]
} else {
cell.textField!.stringValue = ""
}
return cell
}
override var representedObject: Any? {
didSet {
// Update the view, if already loaded.
}
}
}
I have assigned the cell identifiers by hand, and made them identical the corresponding column index, so as to creating a mapping between the cell id and the 2D array (which is the underlying data model) column index. The app is running fine, I just don't like assigning these IDs by click-and-point.
The full project can be found here: https://github.com/kindlychung/MysteriousNum

Answer 1

Create custom cell and add init to it using following lines.
override init(style: UITableViewCellStyle, reuseIdentifier: String?) {
super.init(style: style, reuseIdentifier: reuseIdentifier)
}
and register this cell class as.
self.tableView.register(CustomCell.self, forCellReuseIdentifier: "customCell")
also dequeueReusableCell using same cell like:
tableView.dequeueReusableCell(withIdentifier: "customCell",for: indexPath) as! CustomCell