How can i reach of selected item's title and item's value in picker in swift?

Question

Let me describe view controller (page design) side first. I added one picker view, one label and one button, here is my viewController file

import UIKit

class ViewController: UIViewController, UIPickerViewDelegate, UIPickerViewDataSource {
    //var myArray2 = [["Alex", "de Souza", "1977"],["Ariel", "Ortega", "1974"],["Lefter", "KucukAndonyadis", "1925"]]
    //structure of myArray2: name, lastname, bday

    var myArray = ["Alex", "de Souza", "1977"]

    var indexValueOfSelectedItem = 0
    var nameValueOfSelectedItem = ""
    var lastnameValueOfSelectedItem = ""
    var bdateOfSelectedItem = 0

    @IBOutlet weak var lblResult: UILabel!
    @IBOutlet weak var pickerStudent: UIPickerView!
    override func viewDidLoad() {
        super.viewDidLoad()
        pickerStudent.delegate = self
        pickerStudent.dataSource = self
    }

    func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
        return myArray[row]
    }

    func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
        return myArray.count
    }

    func numberOfComponents(in pickerView: UIPickerView) -> Int {
        return 1
    }

    func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
        indexValueOfSelectedItem = row
        //nameValueOfSelectedItem = row
        //lastnameValueOfSelectedItem = row
        //bdateOfSelectedItem = row
    }

    @IBAction func buttonClick(_ sender: Any) {
        lblResult.text = String (indexValueOfSelectedItem)
    }
}

If i use myArray2 instead of myArray, how can i reach name of selected item details, like name, last name etc ? I would like to show name, lastname and bday of selected item in label.

Answer 1

func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
        return myArray2[row][0]
    }

    func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
        return myArray2.count
    }

    func numberOfComponents(in pickerView: UIPickerView) -> Int {
        return 1
    }

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

        print("name: \(myArray2[indexValueOfSelectedItem][0])")
        print("last name: \(myArray2[indexValueOfSelectedItem][1])")
        print("birthdate: \(myArray2[indexValueOfSelectedItem][2])")
    }

Answer 2

you can get value by

@IBAction func buttonClick(_ sender: Any) {
lblResult.text =  myArray[pickerStudent.selectedRow(inComponent: 0)]} }

and for getting selected index you can user

pickerStudent.selectedRow(inComponent: 0)

using delegate method you can get value when user scrolls the picker view but what if user don't scroll and want to select the first data then you can use this method and you don't need any delegate method also

Answer 3

var pickerDataSource = [["Alex", "de Souza", "1977"],["Ariel", "Ortega", "1974"],["Lefter", "KucukAndonyadis", "1925"]]


var selectedModel = ["", "", ""]


@IBOutlet weak var lblResult: UILabel!
@IBOutlet weak var pickerStudent: UIPickerView!
override func viewDidLoad() {
super.viewDidLoad()
pickerStudent.delegate = self
pickerStudent.dataSource = self
}

func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
    return pickerDataSource[row]
}

func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
    return pickerDataSource.count
}

func numberOfComponents(in pickerView: UIPickerView) -> Int {
    return 1
}

func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
    selectedModel = pickerDataSource[row]
}

@IBAction func buttonClick(_ sender: Any) {
    print(selectedModel)
}