AddSubview to ScrollView - swift

Question

I am trying to add MultipleAnswerView to the main VC scrollview if the picker's first value is selected. But so far it does not add or do anything to VC. the value of picker is working correctly and I can go through .addSubview but after this line, it does not go inside MultipleAnswerView
class AddQuestionViewController: BaseViewController {
var pickerView = UIPickerView()
#IBOutlet weak var scrollView: UIScrollView!
override func viewDidLoad() {
super.viewDidLoad()
self.setupDefaultViews()
}
extension AddQuestionViewController: UIPickerViewDelegate, UIPickerViewDataSource {
func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
surveyTypeTextField.text = surveyTypes[row]
surveyTypeTextField.resignFirstResponder()
setupDefaultViews()
setupViews()
}
}
private func setupViews() {
if surveyTypeTextField.text == surveyTypes[0] {
if let view = multipleAnswerView as MultipleAnswerView? {
view.parentVC = self
self.scrollView.addSubview(view)
}
}
}
This is MultipleAnswerView which I try to add to VC with .addSubview
class MultipleAnswerView: UIView, SurveyAnswerViewDelegate, UITextFieldDelegate {
var parentVC: AddQuestionViewController!
public var delegate: SurveyAnswerViewDelegate?
#IBOutlet weak var answerLabel: UILabel!
public var nib = UINib(nibName: "MultipleAnswerView", bundle: Bundle.main)
override func awakeFromNib() {
setupMultipleAnswerView()
}
override init(frame: CGRect) {
super.init(frame: frame)
}
public convenience init(nib: UINib) {
self.init()
self.nib = nib
setupMultipleAnswerView()
}
required public init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
}
override func layoutSubviews() {
super.layoutSubviews()
//manually set subview frames here
}
func setupMultipleAnswerView() {
self.answerLabel.label(textStr: "Cevaplar",...
}