How to change UIPickerViewData when I select the different UITextField? - swift

Question

I want to show a UIPickerView when tapping a UITextField.
And I made a 'place' UITextField with a UIPickerView.
But, I don't know how to make another UITextField with a UIPickerView.
I tried to use 'switch', but UITextField was not a value, so I couldn't do it with 'switch'.
I want to change UIPickerViewData when I select the different UITextField.
How can I do?
Here's the codes.
Thank you!
#IBOutlet weak var place: UITextField!
#IBOutlet weak var product: UITextField!
#IBOutlet weak var number: UITextField!
let placeArray = ["A", "B", "C", "D", "E", "F"]
let productArray = ["Apple", "Banana", "Grape"]
let numberArray = ["1", "2", "3", "4", "5", "6"]
var pickerView = UIPickerView()
var textField: UITextField!
func numberOfComponents(in pickerView: UIPickerView) -> Int {
return 1
}
func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
return placeArray.count
}
func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
place.text = placeArray[row]
}
func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
return placeArray[row]
}
override func viewDidLoad() {
super.viewDidLoad()
pickerView.delegate = self
pickerView.dataSource = self
let tapGesture = UITapGestureRecognizer(target: self, action: #selector(displayPickerView))
tapGesture.numberOfTapsRequired = 1
place.addGestureRecognizer(tapGesture)
}
#objc private func displayPickerView() {
if textField == nil {
self.textField = UITextField(frame: .zero)
textField.inputView = self.pickerView
self.view.addSubview(textField)
}
textField.becomeFirstResponder()
}

Answer 1

Very simple way to do this.
var placePickerView = UIPickerView()
var productPickerView = UIPickerView()
var numberPickerView = UIPickerView()
override func viewDidLoad() {
super.viewDidLoad()
placePickerView.delegate = self
placePickerView.dataSource = self
place.inputView = placePickerView
productPickerView.delegate = self
productPickerView.dataSource = self
product.inputView = productPickerView
numberPickerView.delegate = self
numberPickerView.dataSource = self
number.inputView = numberPickerView
}
func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
var numberOfRows: Int = 1
if pickerView == placePickerView {
numberOfRows = placeArray.count
} else if pickerView == productPickerView {
numberOfRows = productArray.count
} else if pickerView == numberPickerView {
numberOfRows = numberArray.count
}
return numberOfRows
}
func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
if pickerView == placePickerView {
place.text = placeArray[row]
} else if pickerView == productPickerView {
productType.text = productArray[row]
} else if pickerView == numberPickerView {
transactionType.text = numberArray[row]
}
}
func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
var title: String?
if pickerView == placePickerView {
title = placeArray[row]
} else if pickerView == productPickerView {
title = productArray[row]
} else if pickerView == numberPickerView {
title = numberArray[row]
}
return title
}