Я хочу сделать сборщик еды для своего приложения, но когда я запускаю симулятор, он просто показывает кучу (?,?,?)

Question

код

import UIKit

class Second_part: UIViewController,UIPickerViewDataSource, UIPickerViewDelegate {

    @IBOutlet weak var wachuLike: UILabel!
    @IBOutlet weak var FoodPicker: UIPickerView!

    let foods = ["Indian", "Asian", "Mexican", "American", "Black"]

    func numberOfComponents(in pickerView: UIPickerView) -> Int
    {
        return 1
    }
    func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String?
    {
         return foods[row]
    }

    func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
        return foods.count
    }
    func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
        wachuLike.text = foods[row]
    }

    override func viewDidLoad()
    {
       super.viewDidLoad()
    }
}