我应该如何使用凌空从Android中的sourceJson获取数据？

如何解决我应该如何使用凌空从Android中的sourceJson获取数据？

下面是我正在得到的响应，我想从“ SourceJson”获取数据，我无法理解为什么我在源json中得到“”，请帮助我

{
    "incomingOrder": [
        {
            "Namw": 8510,"Surname": "00","mob": "00","phone": "000","SourceJson": "{\"cart_gst\":30.21,\"instructions\":\"\",\"order_packing_charges\":30,\"cart_igst_percent\":0,\"cart_sgst\":15.1038,}","test": "NotSynced","test": "DPA",}]}

解决方法

尝试此代码：

requestQueue = Volley.newRequestQueue(this);
        JsonObjectRequest obreq = new JsonObjectRequest(Request.Method.GET,JsonURL,// The third parameter Listener overrides the method onResponse() and passes
                //JSONObject as a parameter
                new Response.Listener<JSONObject>() {

                    // Takes the response from the JSON request
                    @Override
                    public void onResponse(JSONObject response) {
                        try {
                            JSONArray jsonArray = response.getJSONArray("incomingOrder");

                            JSONObject jsonObject = jsonArray.getJSONObject(0);

                            JSONObject objSourceJson=jsonObject.getJSONObject("SourceJson");

                            Log.i("IvaSourceJson",objSourceJson.toString());

                            String cart_gst=objSourceJson.getString("cart_gst");
                            String instructions=objSourceJson.getString("instructions");
                        }
                        // Try and catch are included to handle any errors due to JSON
                        catch (JSONException e) {
                            // If an error occurs,this prints the error to the log
                            e.printStackTrace();
                        }
                    }
                },// The final parameter overrides the method onErrorResponse() and passes VolleyError
                //as a parameter
                new Response.ErrorListener() {
                    @Override
                    // Handles errors that occur due to Volley
                    public void onErrorResponse(VolleyError error) {
                        Log.e("Volley","Error");
                    }
                }
        );
        // Adds the JSON object request "obreq" to the request queue
        requestQueue.add(obreq);

,

由于JSONArray数据是列表类型，因此最好不要使用jsonArray.getJSONObject(0);。
将此代码用于多个结果，

StringRequest request = new StringRequest(Request.Method.GET,"",new Response.Listener<String>() {
        @Override
        public void onResponse(String response) {
            Log.d("Response",response);
            try {
                JSONObject object = new JSONObject(response);

                JSONArray array = object.getJSONArray("incomingOrder");
                for (int i = 0; i < array.length(); i++){
                    JSONObject object1 = array.getJSONObject(i);
                    String name = object1.getString("Namw");
                    String surname = object1.getString("Surname");
                    String mob = object1.getString("mob");
                    String phone = object1.getString("phone");
                    String sourceJson = object1.getString("SourceJson");
                    String test = object1.getString("test");
                    String test1 = object1.getString("test");
                }
            } catch (JSONException e) {
                e.printStackTrace();
            }
        }
    },new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error) {
            Log.d("Error",error.getMessage());
        }
    });
    Context context;
    RequestQueue queue = Volley.newRequestQueue(getApplicationContext());
    queue.add(request);  

在任何方法中对此进行编码，并在需要执行操作的地方调用该方法。