如何从 django rest api 获取 android 中没有 json 数组名称的 json 数据？

Question

private void jsonParse() {

String url = "http://127.0.0.1:8000/products/products/";

JsonObjectRequest request = new JsonObjectRequest(Request.Method.GET, url, null,
        new Response.Listener<JSONObject>() {
            @Override
            public void onResponse(JSONObject response) {
                try {
                    JSONArray jsonArray = response.getJSONArray("");

                    for (int i = 0; i < jsonArray.length(); i++) {
                        JSONObject o = jsonArray.getJSONObject(i);
                        int id = o.getInt("id");
                        String title = o.getString("title");

                        String description = o.getString("description");
                        String price = o.getString("price");
                        mTextViewResult.append(title + ", " + String.valueOf(id) + ", "+price +"," + description + "\n\n");
                    }
                } catch (JSONException e) {
                    e.printStackTrace();
                }
            }
        }, new Response.ErrorListener() {
    @Override
    public void onErrorResponse(VolleyError error) {
        error.printStackTrace();
    }
});

mQueue.add(request);}

这是我的安卓代码

 [  {
"id": 1,
"title": "t-shirt",
"description": "this is a good t-shirt",
"price": "39.99"

},

{
"id": 2,
"title": "Jeans",
"description": "this is a jean",
"price": "89.99"}]

这是我的 json 数据

如何获取没有 json 数组名称的 json 数据。 在我的 android 中，我需要有 json 数组名称来解析 json 数据。但是我的 django rest api 生成没有 json 数组名称的 json 数据。

Answer 1

响应是一个 json 列表。你需要一个JSONArrayRequest 对象来获取JSONArray。

示例：

String url = "http://127.0.0.1:8000/products/products/";

JsonArrayRequest request = new JsonArrayRequest(url,
    new Response.Listener<JSONArray>() {
        @Override
        public void onResponse(JSONArray response) {
            try {
                // `response` is the JSONArray that you need to iterate
                for (int i = 0; i < response.length(); i++) {
                    JSONObject o = response.getJSONObject(i);
                    int id = o.getInt("id");
                    String title = o.getString("title");

                    String description = o.getString("description");
                    String price = o.getString("price");
                    mTextViewResult.append(title + ", " + String.valueOf(id) + ", "+price +"," + description + "\n\n");
                }
            } catch (JSONException e) {
                e.printStackTrace();
            }
        }
    }, new Response.ErrorListener() {
      @Override
      public void onErrorResponse(VolleyError error) {
        error.printStackTrace();
      }
});