swift not updating textfield.text using UIDatePicker - ios

Question

In swift, I have a textField programmatically declared.
override func viewDidLoad() {
super.viewDidLoad()
textField3.delegate = self
textField3.returnKeyType = UIReturnKeyType.Next;
datePicker.datePickerMode = UIDatePickerMode.Date
datePicker.addTarget(self, action: Selector("handleDatePicker:"), forControlEvents: UIControlEvents.ValueChanged)
textField3.inputView = datePicker
}
func handleDatePicker(sender: UIDatePicker) {
textField3.text = dateFormatter.stringFromDate(sender.date)
}
All the other questions I've found similar to this deal with interface builder, and haven't helped. How would i fix this programmatically?

Answer 1

Xcode 9 • Swift 4
#objc func handleDatePicker(_ datePicker: UIDatePicker) {
textField3.text = datePicker.date.formatted
}
override func viewDidLoad() {
super.viewDidLoad()
datePicker.addTarget(self, action: #selector(handleDatePicker), forControlEvents: .valueChanged)
}
extension Date {
static let formatter: DateFormatter = {
let formatter = DateFormatter()
formatter.dateFormat = "EEEE, dd MMM yyyy HH:mm:ss Z"
return formatter
}()
var formatted: String {
return Date.formatter.string(from: self)
}
}

Answer 2

Swift 3 version of #Leo Dabus answer:
func handleDatePicker(sender: UIDatePicker) {
textField3.text = datePicker.date.formatted
}
override func viewDidLoad() {
super.viewDidLoad()
datePicker.addTarget(self, action: #selector(handleDatePicker(sender:)), for: UIControlEvents.valueChanged)
}
extension Date {
var formatted: String {
let formatter = DateFormatter()
formatter.dateFormat = "EEEE, dd MMM yyyy HH:mm:ss Z"
return formatter.string(from: self as Date)
}
}

Answer 3

In, Swift 4
confirm to UITableViewDelegate
make txtFChequeDate.delegate = self
func textFieldDidBeginEditing(_ textField: UITextField) {
let datePickerView = UIDatePicker()
datePickerView.datePickerMode = .date
txtFChequeDate.inputView = datePickerView
datePickerView.addTarget(self, action: #selector(handleDatePicker(sender:)), for: .valueChanged)
if txtFChequeDate.text == "" {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "dd MMM yyyy"
txtFChequeDate.text = dateFormatter.string(from: Date())
}
}
#objc func handleDatePicker(sender: UIDatePicker) {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "dd MMM yyyy"
txtFChequeDate.text = dateFormatter.string(from: sender.date)
}