코루틴 콜백 받기

using UnityEngine;

using System.Collections;

 

public class Test : MonoBehaviour {

 

    // Use this for initialization

    IEnumerator Start () {

 

        //for Lambda

        StartCoroutine(ReturnValue( (x) =>

        {

            Debug.Log(x);

        }

        ));

 

         //for local value

        int a = 0;

        yield return StartCoroutine(ReturnValue( (x) =>

        {

            a = x;

        }

        ));

        Debug.Log(a);

    }

  

    IEnumerator ReturnValue(System.Action<int> callback)

    {

        yield return null;

        callback(10);

    }

}

*네트워크에 위의 개념을 사용

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Networking;

public class ConnectServer : MonoBehaviour {

   string url;
   private MusicInfo musicInfo;
   
   
   void Start() {
      
      quiz_1(0,0);
   }

   void quiz_1(int genre, int order) {
      WWWForm form = new WWWForm();
      form.AddField("genre", "0");
      form.AddField("order", "0");
      
      //코루틴으로 서버에 접속하고 완료 시, 콜백으로 받아온다
      StartCoroutine(postToServer(form, "/quiz_1", (www) => {
            musicInfo = JsonUtility.FromJson<MusicInfo>(www.downloadHandler.text);
            Debug.Log("콜백: " + musicInfo.title);
         }
      ));
   }
   
   //서버로 데이터를 post하는 코루틴
   IEnumerator postToServer(WWWForm form, string path, Action<UnityWebRequest> callback) {

      UnityWebRequest www = UnityWebRequest.Post(GlobalScript.serverPath + path, form);
      yield return www.SendWebRequest();
      
      if(www.isNetworkError || www.isHttpError) {
         Debug.Log("[Error]:" + www.error);
      }else {
         Debug.Log("Form upload complete!");
      }
      
      callback(www);
   }
   
}