Sending POST Request to Server with Volley Android

Question

I have a login screen in my app. I want to retrieve the phone number from the input field and send it to my backend server as a post request with volley. The backend server is structured this way:

"user": { "phone": 909099999 }

I have tried this block of code:

final String phone = login_phoneTET.getText().toString(); Map<String, String> params = new HashMap<>(); params.put("phone", phone); JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Request.Method.POST, Constants.TING_OTP_ENDPOINT, new JSONObject(params), new Response.Listener<JSONObject>() { @Override public void onResponse(JSONObject response) { Log.d(TAG, "Success"); } }, new Response.ErrorListener() { @Override public void onErrorResponse(VolleyError error) { Log.d(TAG, "Failed with an Error" + error.getMessage()); error.printStackTrace(); } } ) { @Override public Map<String, String> getHeaders() throws AuthFailureError { HashMap<String, String> headers = new HashMap<>(); headers.put("Content-Type", "application/json; charset=utf-8"); return headers; } }; jsonObjectRequest.setRetryPolicy(new DefaultRetryPolicy(20000, 0, DefaultRetryPolicy.DEFAULT_BACKOFF_MULT)); VolleySingleton.getVolleySingleton(this).addToRequestQueue(jsonObjectRequest);

and also tried using a string request. I keep getting this error in logcat:

E/Volley: [22489] BasicNetwork.performRequest: Unexpected response code 500 for https://:):)/api/user/generateOTP

Am I making this request properly or is there a better way to do it? Thanks.

Mafujul · Accepted Answer · 2017-09-19 04:02:12Z

2

It's a server side error. So i think you need to be concern about your server.

answered Sep 19, 2017 at 4:02

Mafujul

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2 Comments

Anand Rajput Over a year ago

Ok, thanks. Could it be int to string or vice versa type conversion error?

Mafujul Over a year ago

May be not. Actually it's quite difficult to answer without seeing code. If you post here related code then it will be easy to try to answer.

Iñaki Pedroche Aramburu · Accepted Answer · 2017-09-19 06:37:16Z

Please, use https://jsonlint.com/ to validate your json's(the one you send, and the one you get back).

if the JSON you wrote, is the one you are sending:

"user": { "phone": 909099999}

then its not a valid JSON, and there is your error:

Error: Parse error on line 1: "user": { "phone": 909099 ------^ Expecting 'EOF', '}', ',', ']', got ':'

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