在运行时动态地将值添加到UIPickerView

import UIKit

class ViewController: UIViewController, UIPickerViewDataSource, UIPickerViewDelegate {
    @IBOutlet weak var pickerView: UIPickerView!
    
    var data: [String] = []
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        pickerView.dataSource = self
        pickerView.delegate = self
        
        // 添加初始数据
        data = ["Option 1", "Option 2", "Option 3"]
        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]
    }
    
    // 在需要动态添加值的时候，调用以下方法
    func addOption(option: String) {
        data.append(option)
        pickerView.reloadAllComponents()
    }
}