如何在UIPickerView中保存所选选项

import UIKit

class ViewController: UIViewController, UIPickerViewDataSource, UIPickerViewDelegate {
    
    var selectedOption: String = "" // 保存所选选项的变量
    
    let options = ["Option 1", "Option 2", "Option 3"] // 选项数组
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        let pickerView = UIPickerView()
        pickerView.dataSource = self
        pickerView.delegate = self
        
        // 将选择器添加到视图中
        // ...
    }
    
    // 设置选择器的列数
    func numberOfComponents(in pickerView: UIPickerView) -> Int {
        return 1
    }
    
    // 设置每列的行数
    func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
        return options.count
    }
    
    // 设置每行的标题
    func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
        return options[row]
    }
    
    // 选择器选择了某一行时调用
    func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
        selectedOption = options[row]
    }
    
    // 在需要保存所选选项的地方使用selectedOption变量
    // ...
}