UIPickerView for each text field with different arrays (Swift/Firebase)

Question

I am trying to create a form in which each text field has a UIPickerView which the user can use to select the option needed. I need a to use a different array of information

Answer 1

you can assign your selected value to particular text field by using textField delegate methods which is textFieldDidBeginediting which is called when textField did started begin editing

like

take one variable

var textFieldSelected = UITextField()

and then in

func textFieldDidBeginEditing(_ textField: UITextField) {
    textFieldSelected = textField
}

by doing this you will get you selected textField

and when you done choosing from picker

func doneSelection(){
    if textFieldSelected == yourTextField(in which you want to enter your data)
    {
        yourTextField.text = data you want to enter from picker
    }
}

Answer 2

Your code is almost right. I would just store a class attribute with the UIPickerView so you can reload the components upon textField editing status change. For that purpose, you have also to set the textField delegates.

Here a working example with the adjustments I just commented:

import UIKit

class ViewController: UIViewController, UIPickerViewDataSource, UIPickerViewDelegate, UITextFieldDelegate {


    @IBOutlet weak var gameTextField: UITextField!
    @IBOutlet weak var activityTextField: UITextField!
    @IBOutlet weak var consoleTextField: UITextField!
    @IBOutlet weak var skillTextField: UITextField!
    @IBOutlet weak var communicationTextField: UITextField!
    @IBOutlet weak var lfglfmTextField: UITextField!

    var games = ["Assassin's Creed Origins", "Battlefield 1", "Call of Duty: Advanced Warfare", "Call of Duty: Black Ops III", "Call of Duty: Ghosts", "Call of Duty: Infinite Warfare", "Call of Duty: Modern Warfare Remastered", "Call of Duty: WWII", "Destiny", "Destiny 2", "Fifa 16", "Fifa 17", "Fifa 18", "Rocket League"]
    var console = ["Xbox One", "Xbox 360", "Playstation 4", "Playstation 3"]
    var skill = ["Achiever", "Explorer", "Killer", "Socializer"]
    var communication = ["Mic", "No Mic"]
    var lfglfm = ["LFG", "LFM"]

    var itemSelected = ""

    weak var pickerView: UIPickerView?

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.

        //remove margin / padding from textview
        //        self.descriptionTextView.textContainerInset = .zero
        //        self.descriptionTextView.contentInset = UIEdgeInsetsMake(0, -5, 0, 0)

        //allow tap on screen to remove text field input from screen
        self.view.addGestureRecognizer(UITapGestureRecognizer(target: self.view, action: #selector(UIView.endEditing(_:))))

        //UIPICKER
        let pickerView = UIPickerView()
        pickerView.delegate = self
        pickerView.dataSource = self

        gameTextField.delegate = self
        consoleTextField.delegate = self
        skillTextField.delegate = self
        communicationTextField.delegate = self
        lfglfmTextField.delegate = self

        gameTextField.inputView = pickerView
        consoleTextField.inputView = pickerView
        skillTextField.inputView = pickerView
        communicationTextField.inputView = pickerView
        lfglfmTextField.inputView = pickerView

        //It is important that goes after de inputView assignation
        self.pickerView = pickerView

    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    func textFieldDidBeginEditing(_ textField: UITextField) {
        self.pickerView?.reloadAllComponents()
    }

    func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
        if gameTextField.isFirstResponder{
            return games.count
        }else if consoleTextField.isFirstResponder{
            return console.count
        }else if skillTextField.isFirstResponder{
            return skill.count
        }else if communicationTextField.isFirstResponder{
            return communication.count
        }else if lfglfmTextField.isFirstResponder{
            return lfglfm.count
        }
        return 0
    }

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

    func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
        if gameTextField.isFirstResponder{
            return games[row]
        }else if consoleTextField.isFirstResponder{
            return console[row]
        }else if skillTextField.isFirstResponder{
            return skill[row]
        }else if communicationTextField.isFirstResponder{
            return communication[row]
        }else if lfglfmTextField.isFirstResponder{
            return lfglfm[row]
        }
        return nil
    }

    func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
        if gameTextField.isFirstResponder{
            let itemselected = games[row]
            gameTextField.text = itemselected
        }else if consoleTextField.isFirstResponder{
            let itemselected = console[row]
            consoleTextField.text = itemselected
        }else if skillTextField.isFirstResponder{
            let itemselected = skill[row]
            skillTextField.text = itemselected
        }else if communicationTextField.isFirstResponder{
            let itemselected = communication[row]
            communicationTextField.text = itemselected
        }else if lfglfmTextField.isFirstResponder{
            let itemselected = lfglfm[row]
            lfglfmTextField.text = itemselected
        }
    }



    /*
     // MARK: - Navigation

     // In a storyboard-based application, you will often want to do a little preparation before navigation
     override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
     // Get the new view controller using segue.destinationViewController.
     // Pass the selected object to the new view controller.
     }
     */

}

EDITED:

You don't need the updatePicker method. It does nothing indeed. I've deleted the createPostTapped method for the purpose of this simple example.