LoginSignup
21

More than 5 years have passed since last update.

UnityのJsonUtilityでJSON配列を処理する

Last updated at Posted at 2016-10-11

本Qiitaについて

JSONの配列をJsonUtilityで処理する方法について記載

関連Qiita

JsonUtility

{[
{a:11,b:12},
{a:21,b:22},
{a:31,b:32},
]}

は処理できない。

{Items:[
{a:11,b:12},
{a:21,b:22},
{a:31,b:32},
]}

は処理できる。

Livedoorのお天気WebAPIを使ってサンプルを作る

会津若松の天気のJSON
http://weather.livedoor.com/forecast/webservice/json/v1?city=070030

"forecasts" :の配列を取得し格納してみる

JsonHelper.cs

using System;
using UnityEngine;
using System.Collections;

public static class JsonHelper
{
    public static T[] FromJson<T>(string json)
    {
        Wrapper<T> wrapper = UnityEngine.JsonUtility.FromJson<Wrapper<T>>(json);
        return wrapper.forecasts;
    }

    [Serializable]
    private class Wrapper<T>
    {
        public T[] forecasts;
    }
}

RestClient.cs

using UnityEngine;
using System.Collections;
using UnityEngine.Networking;
using System.Text;

[System.Serializable]
public class tenki
{
    public string dateLabel;
    public string telop;
    public string date;
}

public class RestClient : MonoBehaviour {

    public tenki[] tenkiInstance;

    // Use this for initialization
    void Start () {

    }

    // Update is called once per frame
    void Update () {
        if (Input.GetKeyUp("g"))
        {
            Debug.Log ("GET");
            StartCoroutine(Get("http://weather.livedoor.com/forecast/webservice/json/v1?city=070030"));
        }
    }

    public IEnumerator Get (string url) {
        Debug.Log ("GET");

        var request = new UnityWebRequest();
        request.downloadHandler = new DownloadHandlerBuffer();
        request.url = url;
        request.SetRequestHeader("Content-Type", "application/json; charset=UTF-8");
        request.method = UnityWebRequest.kHttpVerbGET;
        yield return request.Send();

        if(request.isError) {
            Debug.Log(request.error);
        }
        else {
            if (request.responseCode == 200) {
                Debug.Log ("success");
                Debug.Log ("--------------------------------");
                Debug.Log(request.downloadHandler.text);
                Debug.Log ("--------------------------------");
                tenkiInstance = JsonHelper.FromJson<tenki>(request.downloadHandler.text);

                for (int i = 0; i < tenkiInstance.Length; i++) {
                    Debug.Log (tenkiInstance [i].dateLabel);
                    Debug.Log (tenkiInstance [i].telop);
                    Debug.Log (tenkiInstance [i].date);
                }
            } else {
                Debug.Log ("failed");
            }
        }
    }
}

ToDo

入れ子の配列の処理.

Register as a new user and use Qiita more conveniently

  1. You get articles that match your needs
  2. You can efficiently read back useful information
  3. You can use dark theme
What you can do with signing up
21