Text change notification for an NSTextField

Question

I would like to use the code from the answer to this question: How to observe the value of an NSTextField on an NSTextField in order to observe changes on the string stored

Answer 1

You should use NSTextFieldDelegate and implement controlTextDidChange. Test in macOS 10.14 and Swift 4.2

import Cocoa

class ViewController: NSViewController, NSTextFieldDelegate {

  @IBOutlet weak var textField: NSTextField!

  override func viewDidLoad() {
    super.viewDidLoad()

    textField.delegate = self
  }

  func controlTextDidChange(_ obj: Notification) {
    let textField = obj.object as! NSTextField
    print(textField.stringValue)
  }
}