Unity刷新JSON聊天功能C＃

Question

我目前正在开发聊天功能，它从服务器上的JSON文件中获取消息和消息信息，并以UI文本显示它们。当应用程序启动时，它会完美地显示消息，但是当一条新消息被POST到服务器时，我无法弄清楚如何更新UI文本中显示的消息。

有人知道如何做到这一点或者能指出我正确的方向吗？以下是我的聊天脚本。

由于

   using UnityEngine;
 using System.Collections;
 using System.IO;
 using System;
 using LitJson;
 using System.Collections.Generic;
 using UnityEngine.UI;
 using System.Text;
 using System.Linq;

 public class Message
 {
     public string messageId { get; set; }
     public string messageContent { get; set; }
     public string messageUsername { get; set; }
     public string messageDate { get; set; }
     public string messageTime { get; set; }
 }

 public class ChatJSON : MonoBehaviour {

     //vars for textbox, displaying chat and submit button
     public InputField input;
     public InputField.SubmitEvent se;
     public Text chatOutputText;

     //urls
     private string chatGETUrl = "Server URL";
     private string chatPOSTUrl = "Server URL";


     //JSOn
     private string chatJSONString;
     private JsonData chatStringData;
     public string chatOutput;
     public string newText;
     public List<Message> chatList = new List<Message>();
     public string chatNewString;
     int messageCount;

     public string displayTextString = "";

     void Start()
     {

         StartCoroutine(GETChatJSON());
         //GetChatText();
     }

      public IEnumerator GETChatJSON()
     {
         WWW chatwww = new WWW(chatGETUrl); 
         yield return chatwww;
         if (chatwww.error == null)
         {

             Debug.Log("Connection is good to: " + chatGETUrl);

         }
         else
         {
             Debug.Log("ERROR: " + chatwww.error);
         }

         chatJSONString = chatwww.text;
         chatStringData = JsonMapper.ToObject(chatJSONString);

         GetChatText();



     }

     public void GetChatText()
     {
         string msgID;
         string msgContent;
         string msgUsername;
         string msgDate;
         string msgTime;


         for (int i = 0; i < chatStringData["messages"].Count; i++)
         {
             msgID = chatStringData["messages"][i]["chat_message_id"].ToString();
             msgContent = chatStringData["messages"][i]["msg_content"].ToString();
             msgUsername = chatStringData["messages"][i]["username"].ToString();
             msgDate = chatStringData["messages"][i]["msg_date"].ToString();
             msgTime = chatStringData["messages"][i]["msg_time"].ToString();


             string hoursToConvert = msgTime.Substring(0, 2);
             string minsToConvert = msgTime.Substring(3, 2);
             int hoursToInt = int.Parse(hoursToConvert) + 1;
             string newtime = hoursToInt.ToString() + ":" + minsToConvert;

             string newYear = msgDate.Substring(0, 4);
             string newMonth = msgDate.Substring(5, 2);
             string newDay = msgDate.Substring(8, 2);

             string newDate = newDay + "/" + newMonth + "/" + newYear;

             //displayTextString = "User: " + msgUsername + "      " + "Message: " + msgContent +
             //    "\n Date: " + msgDate + " - " + msgTime;

             chatList.Add(new Message { messageId = msgID, messageContent = msgContent, messageUsername = msgUsername, 
                 messageDate = newDate, messageTime = newtime });
             messageCount = i;

         }
         DisplayMessage();
     }


     void DisplayMessage()
     {
         chatOutputText.text = "";
         IEnumerable<Message> sortedMessages =
              from Message in chatList
              select Message;

         foreach (Message msg in sortedMessages)
         {

             chatNewString = chatNewString + msg.messageUsername + ": " + msg.messageContent + "\n" 
                 + msg.messageTime + " - " + msg.messageDate +  "\n\n";
         }
         chatOutputText.text = chatNewString;
     }
 }