UIDatePicker with default nil value - iOS

I have searched a lot but found no solution. Anyone can you please help me to find out how to set UIDatePicker initial value as empty textfield??

import UIKit
import Alamofire
import KVNProgress

class EditProfileVC: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate

@IBOutlet var datePickerView: UIView!
@IBOutlet var datePicker: UIDatePicker!


@IBOutlet var birthdayText: UnderLineTextField!
@IBOutlet var bioText: UnderLineTextField!

@IBOutlet var scrollView: UIScrollView!
var imagePicker = UIImagePickerController()

var photoFlag = -1

let activityView = UIActivityIndicatorView(activityIndicatorStyle: .whiteLarge)

var singleTonInstance = SingleTon.sharedDataContainer

var email = ""
var token = ""

override func viewDidLoad()

super.viewDidLoad()

self.birthdayText.text = ""
if #available(iOS 11.0, *)

navigationController?.navigationBar.prefersLargeTitles = false

else

// Fallback on earlier versions


SwiftyPlistManager.shared.getValue(for: "access_token", fromPlistWithName: "AccountDetails") (result, err) in

if err == nil

self.token = (result as? String)!



activityView.color = UIColor.blue
activityView.center = self.view.center

self.view.addSubview(activityView)

self.datePickerView.isHidden = true

self.genderTxt.isUserInteractionEnabled = false
self.birthdayText.isUserInteractionEnabled = false

imagePicker.delegate = self

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

self.getProfileDetails()




@objc func savePressed()

self.activityView.isHidden = false
self.activityView.startAnimating()

let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "MMMM dd, YYYY"
let date = dateFormatter.date(from: self.birthdayText.text!)
dateFormatter.dateFormat = "dd-MM-yyyy"
let dob = dateFormatter.string(from: date!)

let appDelegate = UIApplication.shared.delegate as! AppDelegate

let urlString = appDelegate.serverUrl + "edit_profile?full_name=(self.fullNameText.text!)&dob=(dob)&gender=(self.genderTxt.text!)&bio_data=(self.bioText.text!)&location=(self.locationText.text!)&web_site=(self.webTextField.text!)&token=(self.token)"





@objc func datePickerChanged(sender: UIDatePicker)

let formatter = DateFormatter()
formatter.dateFormat = "MMMM dd, YYYY"
birthdayText.text = formatter.string(from: sender.date)

override func didReceiveMemoryWarning()

super.didReceiveMemoryWarning()

func getProfileDetails()

self.activityView.isHidden = false
self.activityView.startAnimating()

let appDelegate = UIApplication.shared.delegate as! AppDelegate

let urlString = appDelegate.serverUrl + "view_profile?token=(self.token)"



}

@IBAction func birthdayTapped(_ sender: Any)

self.datePickerView.isHidden = false

}


The above code is my whole viewcontroller class code anyone can you please help me to find out the solution please.I assign the value of birthdayText as nil I ViewController but no use.

2 Answers
2

A UITextField's text property is empty by default. So the following code works as expected. Compare it to your code:

UITextField

text

class ViewController: UIViewController

private let textField: UITextField =
let tf = UITextField()
tf.borderStyle = .roundedRect
tf.placeholder = "Choose date and time"
tf.text = "" // not even necessary
return tf
()

lazy private var datePicker: UIDatePicker =
let dp = UIDatePicker()
dp.addTarget(self, action: #selector(datePickerValueChanged), for: .valueChanged)
return dp
()

lazy private var dateFormatter: DateFormatter =
let df = DateFormatter()
df.dateStyle = .short
df.timeStyle = .short
return df
()

@objc private func datePickerValueChanged(datePicker: UIDatePicker)
textField.text = dateFormatter.string(from: datePicker.date)


override func viewDidLoad()
super.viewDidLoad()

let stackView = UIStackView(arrangedSubviews: [textField, datePicker])
stackView.axis = .vertical

view.addSubview(stackView)
stackView.translatesAutoresizingMaskIntoConstraints = false
NSLayoutConstraint.activate([
stackView.topAnchor.constraintEqualToSystemSpacingBelow(view.safeAreaLayoutGuide.topAnchor, multiplier: 1),
stackView.leadingAnchor.constraintEqualToSystemSpacingAfter(view.safeAreaLayoutGuide.leadingAnchor, multiplier: 1),
view.safeAreaLayoutGuide.trailingAnchor.constraintEqualToSystemSpacingAfter(stackView.trailingAnchor, multiplier: 1)
])





Results in:

Update:

Your problem seems to be that you call self.getProfileDetails() at the end of viewDidLoad. In that method you have the line self.birthdayText.text = dateFormatter.string(from: date!) that sets the text.

self.getProfileDetails()

viewDidLoad

self.birthdayText.text = dateFormatter.string(from: date!)

i didnt try this in my xcode try this

@objc func datePickerChanged(sender: UIDatePicker)

let formatter = DateFormatter()
formatter.dateFormat = "MMMM dd, YYYY"
birthdayText.text = ""



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