which method is called when selecting a cell in the NSTableView in Cocoa OS X?

Question

I have a NSTableView , i want to get the value present in the cell. I am having only one column so , i just need the row number

i can use this [tableView selectedRo

Answer 1

full guide In Swift 5:

    override func viewDidLoad() {
        super.viewDidLoad()

        NotificationCenter.default.addObserver(self, selector: #selector(ViewController.didSelectRow(_:)), name: NSTableView.selectionDidChangeNotification, object: tableView)
    }



    @objc
    func didSelectRow(_ noti: Notification){
        guard let table = noti.object as? NSTableView else {
            return
        }
        let row = table.selectedRow
        print(row)
    }


    deinit {
        NotificationCenter.default.removeObserver(self)
    }

Answer 2

What is tableViewController object? Only NSTableView instances respond to selectedRow. You can get current table view (the one that sent the notification) from notification's object property:

Objective-C:

-(void)tableViewSelectionDidChange:(NSNotification *)notification{
    NSLog(@"%d",[[notification object] selectedRow]);
}

Swift:

func tableViewSelectionDidChange(notification: NSNotification) {
    let table = notification.object as! NSTableView
    print(table.selectedRow);
}

Answer 3

my 2 cents for Xcode 10/swift 4.2

  func tableViewSelectionDidChange(_ notification: Notification) {
        guard let table = notification.object as? NSTableView else {
            return
        }
        let row = table.selectedRow
        print(row)
    }

Answer 4

Swift 3 (from Eimantas' answer):

func tableViewSelectionDidChange(_ notification: NSNotification) {
    let table = notification.object as! NSTableView
    print(table.selectedRow);
}

Answer 5

You should addObserver Notification like this

[[NSNotificationCenter defaultCenter] addObserver:self
                                         selector:@selector(tableViewSelectionDidChangeNotification)
                                             name:NSTableViewSelectionDidChangeNotification object:nil];

It will action when tableView selected row

good luck