获取文本字段输入并将其插入到swift 5.1中的选择器中

import UIKit

class ViewController: UIViewController, UITextFieldDelegate, UIPickerViewDataSource, UIPickerViewDelegate {
    var textField: UITextField!
    var pickerView: UIPickerView!
    var data: [String] = ["Option 1", "Option 2", "Option 3"]
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 创建文本字段
        textField = UITextField(frame: CGRect(x: 50, y: 100, width: 200, height: 30))
        textField.borderStyle = .roundedRect
        textField.delegate = self
        self.view.addSubview(textField)
        
        // 创建选择器
        pickerView = UIPickerView(frame: CGRect(x: 50, y: 150, width: 200, height: 200))
        pickerView.dataSource = self
        pickerView.delegate = self
        self.view.addSubview(pickerView)
    }
    
    // 监听文本字段的输入变化
    func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {
        let newText = (textField.text as NSString?)?.replacingCharacters(in: range, with: string)
        // 将输入值作为选择器的数据源
        data.append(newText ?? "")
        pickerView.reloadAllComponents()
        return true
    }
    
    // 选择器的列数
    func numberOfComponents(in pickerView: UIPickerView) -> Int {
        return 1
    }
    
    // 选择器的行数
    func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
        return data.count
    }
    
    // 选择器的每行显示的内容
    func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
        return data[row]
    }
}