Swift 3 | Xcode update datePicker UItextField

Question

This code allows you to update textField with datePicker for Xcode 7, but when I try to implement it in Xcode 8 and Swift 3, the application crashes and throws a SIGABRT error in the AppDelegate.swift file. I check all my @IBs and I have no different connections to remove. Any guidance would be greatly appreciated.

 import UIKit class ViewController: UIViewController, UITextFieldDelegate { @IBOutlet var eventStartText: UITextField! override func viewDidLoad() { super.viewDidLoad() eventStartText.delegate = self // Do any additional setup after loading the view. } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be recreated. } // MARK: TextField Delegate func datePickerChanged(sender: UIDatePicker) { let formatter = DateFormatter() formatter.dateStyle = .full eventStartText.text = formatter.string(from: sender.date) print("Try this at home") } func textFieldDidBeginEditing(_ textField: UITextField) { let datePicker = UIDatePicker() textField.inputView = datePicker datePicker.addTarget(self, action: (Selector(("datePickerChanged:"))), for: .valueChanged) print("This Worked") } func textFieldShouldReturn(_ textField: UITextField) -> Bool { eventStartText.resignFirstResponder() return true } // MARK: Helper Methods func closekeyboard() { self.view.endEditing(true) } // MARK: Touch Events override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) { closekeyboard() } /* // MARK: - Navigation // In a storyboard-based application, you will often want to do a little preparation before navigation override func prepare(for segue: UIStoryboardSegue, sender: Any?) { // Get the new view controller using segue.destinationViewController. // Pass the selected object to the new view controller. } */ } 

Answer 1

The problem is with selector syntax, from Swift 3 you need to specify the name of the first parameter inside selector , so change the selector syntax as follows.

 datePicker.addTarget(self, action: #selector(datePickerChanged(sender:)), for: .valueChanged)