在Swift中将用户输入的数据放入数组更新UIPickerView时出现问题

import UIKit

class ViewController: UIViewController, UIPickerViewDelegate, UIPickerViewDataSource {
    @IBOutlet weak var pickerView: UIPickerView!
    @IBOutlet weak var textField: UITextField!
    
    var data: [String] = []
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        pickerView.delegate = self
        pickerView.dataSource = self
    }
    
    @IBAction func addButtonTapped(_ sender: UIButton) {
        if let text = textField.text, !text.isEmpty {
            data.append(text)
            pickerView.reloadAllComponents()
        }
    }
    
    // MARK: - UIPickerViewDataSource
    
    func numberOfComponents(in pickerView: UIPickerView) -> Int {
        return 1
    }
    
    func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
        return data.count
    }
    
    // MARK: - UIPickerViewDelegate
    
    func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
        return data[row]
    }
}