android - 在 Android Studio 中使用 GET 方法和 Volley 解析 JSON

Question

我得到了这个 json array:

  {
   "conferences": [
   {
    "id": 1,
    "name": "Conferencia Magistral",
    "description": "Conferencia bien chingona lalala",
    "speaker": "Jorge",
    "biography": "bioo",
    "place": {
     "name": "Auditorio",
     "description": "Presentacion de peliculas y documentales"
   },
   "date": "31/10/2015",
   "time": "16:00"
}
]
}

这是我在 Android Studio 中的代码:

 queue = Volley.newRequestQueue(this);

    JsonArrayRequest JsonRequest = new JsonArrayRequest(Request.Method.GET, url, new Response.Listener<JSONArray>() {
        @Override
        public void onResponse(JSONArray response) {

            try {

                for (int i = 1, count = response.length(); i < count; i++) {

                    EventInfo eventInfo = new EventInfo();
                    eventInfo.name = response.getJSONObject(i).getString("name");
                    eventInfo.date =   response.getJSONObject(i).getString("date");
                    eventInfo.hour_event =   response.getJSONObject(i).getString("time");
                    eventInfo.link="http://www.tallertoa.com/v1/files/gimgs/7_botanico-lamina-21.jpg";
                    eventInfo.description = response.getJSONObject(i).getString("description");
                    eventInfos.add(eventInfo);


                }
                  recList.setAdapter(adapter);
                Log.e("JSON", response.toString());

            } catch (JSONException e) {
                showErrorDialog("error Json parser", "error al parsear objeto Json Evento");
                Log.e("json error",e.toString());
            }

        }

    }, new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error) {

        }
    });
    queue.add(JsonRequest);

}

所以，我无法解析这个 Json 数组，我已经完成了，但是使用了 POST 方法，所以我想知道你们中是否有人可以告诉我如何使用 volley 来完成此操作

Answer 1

{
    "conferences": [
        {
            "id": 1,
            "name": "Conferencia Magistral",
            "description": "Conferencia bien chingona lalala",
            "speaker": "Jorge",
            "biography": "bioo",
            "place": {
                "name": "Auditorio",
                "description": "Presentacion de peliculas y documentales"
            },
            "date": "31/10/2015",
            "time": "16:00"
        }
    ]
}

首先，这是一个 JSONObject，而不是 JSONArray。你可以去here和 here了解更多信息

JSONObject: ...A string beginning with { (left brace) and ending with } (right brace).

JSONArray: ...A string that begins with [ (left bracket) and ends with ] (right bracket).

因此，您可以使用 JsonObjectRequest 而不是 JsonArrayRequest

希望这对您有所帮助!