PikerView with ToolBar Demo

//  ViewController.swift

//  PikerViewToolBarPractice

import UIKit

class ViewController: UIViewController,UIPickerViewDataSource,UIPickerViewDelegate,UIToolbarDelegate {

    @IBOutlet var txtCITY: UITextField!

    

    let Pikerview = UIPickerView()

    

    var arrPiker = [String] ()

    

    var citydata = String()

    

    override func viewDidLoad() {

        super.viewDidLoad()

        Pikerview.delegate = self

        Pikerview.dataSource = self

        // Do any additional setup after loading the view, typically from a nib.

         arrPiker.append("aa")

         arrPiker.append("bb")

         arrPiker.append("cc")

         arrPiker.append("dd")

         arrPiker.append("ee")

         arrPiker.append("ff")

         arrPiker.append("gg")

        

        PikerValueChanged()

        

    }

    override func didReceiveMemoryWarning() {

        super.didReceiveMemoryWarning()

        // Dispose of any resources that can be recreated.

    }

    

    func numberOfComponents(in pickerView: UIPickerView) -> Int {

        return 1

    }

    func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {

        return arrPiker.count

    }

    

    func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {

        return arrPiker[row]

    }

    

    func PikerValueChanged()

    {

        let toolbar = UIToolbar()

        toolbar.sizeToFit()

        

        let spaceButton = UIBarButtonItem(barButtonSystemItem: .flexibleSpace, target: nil, action: nil)

        

        let DoneButton = UIBarButtonItem(title: "Done", style: .done, target: self, action: #selector(DonebuttonPressed))

        

        let CandsleButton = UIBarButtonItem(title: "Cansle", style: .plain, target: self, action: #selector(CansleButtonPressed))

        

        let lblTitle = UILabel()

        lblTitle.frame = CGRect(x: 0, y: 0, width: 150, height: 30)

        lblTitle.text = "Select City"

        lblTitle.textAlignment = .center

        lblTitle.backgroundColor = UIColor.gray

        

        

        let titleButton = UIBarButtonItem(customView: lblTitle)

        

        toolbar.setItems([CandsleButton,spaceButton,titleButton,spaceButton,DoneButton], animated: true)

        txtCITY.inputView = Pikerview

        txtCITY.inputAccessoryView = toolbar

        

    }

    func DonebuttonPressed()

    {

       txtCITY.text = citydata

    txtCITY.resignFirstResponder()

    }

    

    func CansleButtonPressed ()

    {

        txtCITY.resignFirstResponder()

    }

    func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int)

    {

        citydata = arrPiker[row]

    }

}