如何使用Volley库解析android中的嵌套json数组 [英] How to parse nested json array in android using volley library

问题描述

我以以下格式嵌套了json数组.我正在使用凌空资料库进行JSON解析.

I have nested json array in below format.I am using volley liabrary for JSON Parsing.

{
"City": [{
        "name": "Mumbai",
        "Mumbai": [{
            "area": "andheri",

            "diler": [{
                "DName": "yuvraj"
            }]
        }, {
            "area": "jogeshwari"
        }, {
            "area": "goregaon"
        }]
    },

    {

        "name": "Nashik",
        "Nashik": [{
            "area": "clg rd",
            "diler": [{
                "DName": "yuvraj"
            }]
        }, {
            "area": "GP RD",
            "diler": [{
                "DName": "Roshan"
            }]
        }, {
            "area": "CBS",
            "diler": [{
                "DName": "Deepak"
            }]
        }]

    }, {
        "name": "Bengaluru"
    }
]}

下面是我在android中编写的代码.

Below is the code which i have write in android.

   jsonURL = "http://192.168.1.11/cycle_webservices/testing.json";

    buttonReq.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            JsonArrayRequest jsonArrayRequest = new JsonArrayRequest(
                    jsonURL,
                    new Response.Listener<JSONArray>() {
                        @Override
                        public void onResponse(JSONArray response) {
                            try {
                                for (int i = 0; i < response.length(); i++) {
                                    JSONObject jsonObject = response.getJSONObject(i);
                                    String name = jsonObject.getString("name");
                                    String area = jsonObject.getString("area");
                                    String diler = jsonObject.getString("diler");

                                    textView.append("\nCity: " + name + "\nArea: " + area + "\nDealer: " + diler +   "\n");
                                }
                            } catch (JSONException e) {
                                e.printStackTrace();
                                Toast.makeText(getApplicationContext(), "Error: " + e.getMessage(), Toast.LENGTH_LONG).show();
                            }
                        }
                    },
                    new Response.ErrorListener() {
                        @Override
                        public void onErrorResponse(VolleyError error) {
                            Log.e("VOLLEY", "ERROR");
                            Toast.makeText(getApplicationContext(), error.getMessage(), Toast.LENGTH_SHORT).show();
                        }
                    }
            );
            requestQueue.add(jsonArrayRequest);
        }
    });

但是在Android中解析它时出现错误. 错误是-JSONObject无法转换为JSONArray

But i am getting Errors while parsing it in Android. The error is- JSONObject can not be converted to JSONArray

任何人都可以提供示例代码来解析此json数组.

Can anyone please provide sample code to parse this json Array.

预先感谢

推荐答案

这是您的问题解决方案，请使用以下代码

Here is your problem solution, use below code

 try {
        JSONObject jsonObject = new JSONObject("response");
        JSONArray jsonArray = jsonObject.getJSONArray("City");
        for (int i = 0; i < jsonArray.length(); i++) {
            JSONObject object = jsonArray.getJSONObject(i);
            String name = object.getString("name");
            if (object.length() != 0) {
                Iterator<String> key = object.keys();
                while (key.hasNext()) {
                    String cityname = key.next();
                    JSONArray ja = object.getJSONArray(cityname);
                    for (int j = 0; j < ja.length(); j++) {
                        JSONObject object1 = ja.getJSONObject(j);
                        String area = object1.getString("area");

                    }
                }
            }

        }
    } catch (Exception e) {
        e.printStackTrace();
    }

并尝试使您的JSON格式相同.

And try to make your JSON format same.

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