How to post params inside JsonObject using Volley

Question

I want to send Params in particular format to the server.

This is the format:

{
                   "institute": {
                       "name": $scope.formData.institute_name,
                       "state": $scope.formData.state,
                       "city": $scope.formData.city,
                       "pin_code": $scope.formData.pincode,
                       "nature": $scope.formData.nature,
                   },
                   "user": {
                       "role": $scope.formData.role,
                       "user_id": $scope.user_id
                   }
               };

And I can send in this format but the problem is a value inside institute and user is going as String. And I want value inside it also go as key and value.

So I need to return params like Map<String,Map<String,String>> this

I tried this but it didn't work

 @Override
        protected Map<String, String> getParams() throws AuthFailureError {

            Map<String, String> instituteParams = new HashMap<>();
            instituteParams.put("name", institute);
            instituteParams.put("state", state);
            instituteParams.put("city", city);
            instituteParams.put("pin_code", pincode);
            instituteParams.put("nature", nature);

            JSONObject objectInstitute = new JSONObject(instituteParams);

            Map<String, String> userParams = new HashMap<>();
            userParams.put("role", role);
            userParams.put("user_id", userid);

            JSONObject objectUser = new JSONObject(userParams);

            Map<String, String> params = new HashMap<>();
            params.put("institute", objectInstitute.toString());
            params.put("user", objectUser.toString());
            return params;
        }

did you tried setting those values directly to json object instead of passing them via map? — karan, Feb 15 '19 at 06:20
Yes I tried to put JSONObject of institute and user directly into params Map<> but it also doesn't work. @KaranMer — Ajay Gohel, Feb 15 '19 at 06:23
I am telling to replace map with using json directly. like setting `objectInstitute.put("name", institute);` and so on. — karan, Feb 15 '19 at 06:29

score 0 · Answer 1 · answered Feb 15 '19 at 07:43

@Ajay there are many way to do so. We can parse from custom user Object using gson library or Map (approach you follow) or directly create JSONObject.

I had created 2 versions of the method, although ver2 seems best if your result won;t be heavy enough and also its very descriptive.

private JSONObject getParamsVer1() throws JSONException {
    Map<String, String> instituteParams = new HashMap<>();
    instituteParams.put("name", "");
    instituteParams.put("state", "");
    instituteParams.put("city", "");
    instituteParams.put("pin_code", "");
    instituteParams.put("nature", "");

    JSONObject objectInstitute = new JSONObject(instituteParams);

    Map<String, String> userParams = new HashMap<>();
    userParams.put("role", "");
    userParams.put("user_id", "");

    JSONObject objectUser = new JSONObject(userParams);

    Map<String, JSONObject> params = new HashMap<>();
    params.put("institute", objectInstitute);
    params.put("user", objectUser);

    return new JSONObject(params);
}

private JSONObject getParamsVer2() throws JSONException {
    JSONObject jsonObject = new JSONObject() {
        {
            put("institute", new JSONObject(){
                {
                    put("name", "");
                    put("state", "");
                    put("city", "");
                    put("pin_code", "");
                    put("nature", "");
                }
            });
            put("user", new JSONObject(){
                {
                    put("role", "");
                    put("user_id", "");
                }
            });
        }
    };
    return jsonObject;
}

Try to figure out your mistake on ver1 of the method. But again i'll say ver2 is best fit in this scenario and very neat, hierarchical method.

How to post params inside JsonObject using Volley

1 Answers1