使用JSON填充廣告資源界面，我的代碼出了什麼問題？

Question

我在Unity 5中使用JSON和LitJSON來填充遊戲的廣告資源UI。問題是，我的代碼沒有返回任何東西，除了來自id：0項目的信息。在這一點上，我只有兩個項目在我的JSON。我在Unity中的代碼會認識到，只有id：0和id：1的項目，因爲如果我在其中放入其他內容，我會在參數外獲得一個錯誤，但它仍然只將信息打印到控制檯的id： 0。

這裏是我的JSON：

[ 
    { 
     "id": 0, 
     "title": "Stun Gun", 
     "value": 6, 
     "stats": { 
      "power": 100, 
      "defense": 4, 
      "vitality": 2 
     }, 
     "description": "Testing the Stun Gun.", 
     "stackable": false, 
     "rarity": 2, 
     "slug": "stun_gun" 
    }, 

    { 
    "id": 1, 
     "title": "The Great Gun", 
     "value": 500, 
     "stats": { 
      "power": 700, 
      "defense": 10, 
      "vitality": 10 
     }, 
     "description": "The Great Gun is great.", 
     "stackable": true, 
     "rarity": 6, 
     "slug": "the_great_gun" 
    } 
] 

這裏是我的庫存腳本：

using UnityEngine; 
using UnityEngine.UI; 
using System.Collections; 
using System.Collections.Generic; 

public class Inventory : MonoBehaviour { 
    GameObject inventoryPanel; 
    GameObject slotPanel; 
    ItemDatabase database; 
    public GameObject inventorySlot; 
    public GameObject inventoryItem; 

    int slotAmount; 
    public List<Item> items = new List<Item>(); 
    public List<GameObject> slots = new List<GameObject>(); 

    void Start() 
    { 
     database = GetComponent<ItemDatabase>(); 

     slotAmount = 8; 
     inventoryPanel = GameObject.Find ("Inventory Panel"); 
     slotPanel = inventoryPanel.transform.FindChild ("Slot Panel").gameObject; 
     for (int i = 0; i < slotAmount; i++) 
     { 
      items.Add(new Item()); 
      slots.Add(Instantiate(inventorySlot)); 
      slots[i].transform.SetParent(slotPanel.transform); 
     } 

     AddItem(0); 
     AddItem(1); 

     Debug.Log(items[1].Slug); 
    } 

    public void AddItem (int id) 
    { 
     Item itemToAdd = database.FetchItemByID(id); 
     for (int i = 0; i < items.Count; i++) 
     { 
      if (items[i].ID == -1) 
      { 
       items[i] = itemToAdd; 
       GameObject itemObj = Instantiate(inventoryItem); 
       itemObj.transform.SetParent(slots[i].transform); 
       itemObj.transform.position = Vector2.zero; 
       itemObj.GetComponent<Image>().sprite = itemToAdd.Sprite; 
       itemObj.name = itemToAdd.Title; 

       break; 
      } 
     } 
    } 
} 

，這裏是我的ItemDatabase腳本：

using UnityEngine; 
using System.Collections; 
using LitJson; 
using System.Collections.Generic; 

using System.IO; 

public class ItemDatabase : MonoBehaviour { 
    private List<Item> database = new List<Item>(); 
    private JsonData itemData; 

    void Start() 
    { 
     itemData = JsonMapper.ToObject(File.ReadAllText(Application.dataPath + "/StreamingAssets/Items.json")); 
     ConstructItemDatabase(); 

     Debug.Log (FetchItemByID(0).Description); 
    } 

    public Item FetchItemByID (int id) 
    { 
     for (int i = 0; i < database.Count; i++) 
      if(database[id].ID == id) 
       return database[i]; 
     return null; 
    } 

    void ConstructItemDatabase() 
    { 
     for (int i = 0; i < itemData.Count; i++) 
     { 
      database.Add(new Item((int)itemData[i]["id"], itemData[i]["title"].ToString(), (int)itemData[i]["value"], 
       (int)itemData[i]["stats"]["power"], (int)itemData[i]["stats"]["defense"], (int)itemData[i]["stats"]["vitality"], 
       itemData[i]["description"].ToString(), (bool)itemData[i]["stackable"], (int)itemData[i]["rarity"], 
       itemData[i]["slug"].ToString())); 
     } 
    } 
} 

public class Item { 
    public int ID { get; set; } 
    public string Title { get; set; } 
    public int Value { get; set; } 

    public int Power { get; set; } 
    public int Defense { get; set; } 
    public int Vitality { get; set; } 
    public string Description { get; set; } 
    public bool Stackable { get; set; } 
    public int Rarity { get; set; } 
    public string Slug { get; set; } 
    public Sprite Sprite { get; set; } 

    public Item (int id, string title, int value, int power, int defense, int vitality, string description, bool stackable, int rarity, string slug) 
    { 
     this.ID = id; 
     this.Title = title; 
     this.Value = value; 
     this.Power = power; 
     this.Vitality = vitality; 
     this.Description = description; 
     this.Stackable = stackable; 
     this.Rarity = rarity; 
     this.Slug = slug; 
     this.Sprite = Resources.Load<Sprite>("Sprites/Items/" + slug); 
    } 

    public Item() 
    { 
     this.ID = -1; 
    } 
} 

我得到正確的號碼的插槽，以及正確數量的填充與空插槽（2），但兩個插槽都填充了「stun_gun」。任何幫助將非常感激。我是Unity/C＃的新手。

Answer 1

它不應該是

public Item FetchItemByID (int id) 
{ 
    for (int i = 0; i < database.Count; i++) 
     if(database[i].ID == id) // i rather than id 
      return database[i]; 
    return null; 
}