您需要在模型中添加一个额外的数据作为选定值，然后在选择选择器视图时将该值设置为文本字段

you need to add a extra data into model as selected value then set that value to textfield when selecting picker view

class QuestionCollectionViewController: UICollectionViewController,UITextFieldDelegate {

        // Mark: - Properties

        let reuseIdentifier = "QuestionCell"

        let survey: Survey? = UserDefaults.getCodable(.survey)

        // number of cells is based on the
        override func collectionView(_ collectionView: UICollectionView,
                                     numberOfItemsInSection section: Int) -> Int {
            return survey?.questions.count ?? 0
        }

        override func collectionView(_ collectionView: UICollectionView,
                                     cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
            let cell = collectionView.dequeueReusableCell(withReuseIdentifier: reuseIdentifier,
                                                          for: indexPath) as! QuestionViewCell
            let data = survey?.questions[indexPath.item]
            cell.questionResponse.delegate = self
            cell.questionResponse.tag = indexPath.item
            cell.questionResponse.text = data.selectedValue
            return cell
        }


        func textFieldDidBeginEditing(_ textField: UITextField) {
           let index = IndexPath(item: textField.tag, section: 0)
           constructQuestionViewCell(cell,withQuestion:survey?.questions[index.item])
        }



        private func constructQuestionViewCell(_ cell: QuestionViewCell, withQuestion question: SurveyQuestion? = nil) {
            cell.questionTitle.text = question?.title
            cell.questionTitle.numberOfLines = 0
            cell.questionTitle.sizeToFit()

            cell.questionResponse.frame.origin.y = cell.questionTitle.frame.maxY + 7
            cell.questionResponse.inputAccessoryView = doneToolbar()
            cell.questionResponse.layer.borderColor = UIColor.lightGray.cgColor
            cell.questionResponse.layer.borderWidth = 1.0
            cell.questionResponse.layer.cornerRadius = 5.0

            // TODO refactor and remove else if keying off of "ratepain" once survey questions have been updated in the api
            if (question?.type == "number_list") {
                let options = question?.values ?? [" ", "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10"]
                let picker = CustomPickerView(frame: .zero, textView: cell.questionResponse, options: options)
                //cell.questionResponse.inputView = picker
                question?.selectedValue = picker.value
                picker.reloadAllComponents()
            }
            else if (question?.key == "ratepain") {
                let options = [" ", "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10"]
                let picker = CustomPickerView(frame: .zero, textView: cell.questionResponse, options: options)
                //cell.questionResponse.inputView = picker
                question?.selectedValue = picker.value
            }

            cell.sizeToFit()

        }