iPhone display date picker on UITextField touch

Question

I followed this thread: datepicker by clicking on textfield

I imported both of the following protocols:

@interface ViewController : UIViewController&         


        

Answer 1

Swift 4.2
You can achieve this by writing just one line of code using UITextField Extension.
Credit: http://www.swiftdevcenter.com/

import UIKit

extension UITextField {

    func setInputViewDatePicker(target: Any, selector: Selector) {
        // Create a UIDatePicker object and assign to inputView
        let screenWidth = UIScreen.main.bounds.width
        let datePicker = UIDatePicker(frame: CGRect(x: 0, y: 0, width: screenWidth, height: 216))//1
        datePicker.datePickerMode = .date //2
        self.inputView = datePicker //3

        // Create a toolbar and assign it to inputAccessoryView
        let toolBar = UIToolbar(frame: CGRect(x: 0.0, y: 0.0, width: screenWidth, height: 44.0)) //4
        let flexible = UIBarButtonItem(barButtonSystemItem: .flexibleSpace, target: nil, action: nil) //5
        let cancel = UIBarButtonItem(title: "Cancel", style: .plain, target: nil, action: #selector(tapCancel)) // 6
        let barButton = UIBarButtonItem(title: "Done", style: .plain, target: target, action: selector) //7
        toolBar.setItems([cancel, flexible, barButton], animated: false) //8
        self.inputAccessoryView = toolBar //9

    }

    @objc func tapCancel() {
        self.resignFirstResponder()
    }

}

In your UIViewController class write below code.

class ViewController: UIViewController {

    @IBOutlet weak var myTextField: UITextField!

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        self.myTextField.setInputViewDatePicker(target: self, selector: #selector(tapDone(sender:datePicker1:))) //1
    }

    //2
    @objc func tapDone(sender: Any, datePicker1: UIDatePicker) {
        print(datePicker1)
        if let datePicker = self.myTextField.inputView as? UIDatePicker { // 2.1
            let dateformatter = DateFormatter() // 2.2
            dateformatter.dateStyle = .medium // 2.3
            self.myTextField.text = dateformatter.string(from: datePicker.date) //2.4
        }
        self.myTextField.resignFirstResponder() // 2.5
    }

}

For more detail visit: http://www.swiftdevcenter.com/uidatepicker-as-input-view-to-uitextfield-swift/