CODEWITHSUNDEEP
swiftcocoamacos-sierra
qed
qed

Reputation: 23134

TableView is not rendering data

Here is the code:

import Cocoa

class ViewController: NSViewController, NSTableViewDataSource, NSTableViewDelegate {

    let data = [
        [1, 2, 3, 4],
        [5, 6, 7, 8],
        [1, 2, 3, 4],
        [5, 6, 7, 8],
    ]

    @IBOutlet weak var tbl: NSTableView!
    override func viewDidLoad() {
        print("init")
        super.viewDidLoad()
        tbl.delegate = self
        tbl.dataSource = self
        tbl.target = self
        tbl.reloadData()
        print("end init")
    }

    override var representedObject: Any? {
        didSet {
            tbl.reloadData()
        }
    }

    func tableView(_ tableView: NSTableView, viewFor tableColumn: NSTableColumn?, row: Int) -> NSView? {
        if let cell = tbl.make(withIdentifier: tableColumn!.identifier, owner: nil) as? NSTableCellView {
            if let col = Int(tableColumn!.identifier) {
                print("col id: ", tableColumn!.identifier)
                print(row, col)
                cell.textField?.stringValue = String(data[row][col])
                return cell
            }
        }
        return nil
    }

    func tableView(_ tableView: NSTableView, objectValueFor tableColumn: NSTableColumn?, row: Int) -> Any? {
        if let col = tableColumn {
            if let colIndex = Int(col.identifier) {
                print(data[row][colIndex])
                return data[row][colIndex] as Any
            }
        }
        return nil
    }

    func numberOfRows(in tableView: NSTableView) -> Int {
        return data.count
    }
}

I am just trying to load a matrix into the table view, but it is blank when the app runs. What went wrong here? Judging from the debug info, the functions tableView were never invoked.

Upvotes: 0

Views: 212

Answers (1)

Jeff
Jeff

Reputation: 56

I see you set the delegate of the tableView, but I don't see where you set the data source of the tableView.

Upvotes: 2

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