Aula 6.3

O meu programa compila, porém quando vou adicionar um novo item(nome e caloria) o novo nome não aparece na lista inicial de refeição do meu programa. Alguém pode me ajudar?

Segue abaixo o código da minha ViewController:

import UIKit
protocol AddAMealDelegate{
    func add(meal:Meal)
}

class ViewController: UIViewController, UITableViewDataSource, UITableViewDelegate, AddAnItemDelegate {

   @IBOutlet var nameField:UITextField?
   @IBOutlet var happinessField:UITextField?
    @IBOutlet var tableView :UITableView?
    var delegate:AddAMealDelegate?
    var items = [
        Item(name: "Strogonoff", calories:400),
        Item(name: "Batata Palha", calories:100),
        Item(name: "Cookie", calories:220),
        Item(name: "Coconut Oil", calories:125),
        Item(name: "Chocolate Frosting", calories:559),
        Item(name: "Chocolate Chip", calories:431)
                ]
    override func viewDidLoad() {
       let newItemButton = UIBarButtonItem(title: "new item",
            style: UIBarButtonItemStyle.Plain,
            target: self,
            action: Selector("showNewItem"))
        navigationItem.rightBarButtonItem = newItemButton
    }

    func add(item: Item) {
        items.append(item)
        if tableView == nil{
            return
        }
        tableView!.reloadData()
    }

    func showNewItem() {
        let newItem = NewItemViewController(delegate: self)
        newItem.delegate = self
        if let navigation = navigationController {
            navigation.pushViewController(newItem, animated: true)
        }
    }
    var selected = Array<Item>()
    func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return items.count
    }
    func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
        let row = indexPath.row
        let item = items[row]
        let cell = UITableViewCell(style: UITableViewCellStyle.Default, reuseIdentifier: nil)
        cell.textLabel!.text = item.name
        return cell
    }
    func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
    let cell = tableView.cellForRowAtIndexPath(indexPath)
        if cell == nil {
            return
        }
        var item = items[indexPath.row]
        if cell!.accessoryType == UITableViewCellAccessoryType.None{
        cell!.accessoryType = UITableViewCellAccessoryType.Checkmark
        selected.append(item)
        }
        else{
            cell!.accessoryType = UITableViewCellAccessoryType.None
            if let position = selected.indexOf(items[indexPath.row]) {
                selected.removeAtIndex(position)
            }
        }
    }

    @IBAction func add(){
        if nameField == nil || happinessField == nil{
            return
        }

        let name = nameField!.text
        let happiness = Int (happinessField!.text!)

        if happiness == nil{
            return
        }
        let meal = Meal(name: name!,happiness:happiness!)
        meal.items = selected
        print("eaten \(meal.name) \(meal.happiness) \(meal.items)")

        if delegate == nil{
            return
        }
        delegate!.add(meal)
        if let navigation = self.navigationController{
            navigation.popToRootViewControllerAnimated(true)
        }
    }

}