Android Studio Volley JSON REST API 解析

Question

编写Android应用程序，需要解析嵌套的JSON数据 下面是从http收到的实际数据。

目前使用 Volley，

JSONArray dataJSONArray = response.getJSONArray("data");

需要示例代码来解析和显示来自下面提到的 JSON 数据的数据

{"data":[{"counting_area_id":3,"name":"Utilization","parking_area_id":1, "free":3,"total":200,"location_latitude":null,"location_longitude":null,"places":10, "children":[{"counting_area_id":1,"name":"Basement 1","parking_area_id":1, "free":0,"total":116,"location_latitude":null,"location_longitude":null,"places":0, "children":[]},{"counting_area_id":73,"name":"Basement 2","parking_area_id":1, "free":3,"total":121,"location_latitude":null,"location_longitude":null,"places":3, "children":[]}]}]}

Answer 1

您需要将data传递给JSONArray并使用for loop解析它，如下面的代码：

 JSONArray jsonArray = response.getJSONArray("data");//getting array
            for (int i = 0; i < jsonArray.length(); i++) {
             JSONObject jsonobject= jsonArray.getJSONObject(i);//getting first element 
           String id= jsonobject.getString("counting_area_id");//value of counting_area_id ,get all value in same way i.e location,places etc.
          System.out.println(id);
             JSONArray jsonObject1= object.getJSONArray("children"); //getting children array
     for (int j = 0; j < jsonObject1.length(); j++) {
         JSONObject object1 = jsonObject1.getJSONObject(j);
           String id= object1.getString("counting_area_id");//same as before

        }
        }