Getting JSON exception while uploading

Question

This is program but getting JSON exception.

private void uploadImage(){

    String uploadUrl = "http://...........";
    StringRequest stringRequest = new StringRequest(Request.Method.POST, uploadUrl, new Response.Listener<String>() {
        @Override
        public void onResponse(String response) {
            try {
                JSONObject jsonObject = new JSONObject(response);
                String Response = jsonObject.getString("response");
                Toast.makeText(MainActivity.this,Response,Toast.LENGTH_SHORT).show();
                mImage.setImageResource(0);
                mImage.setVisibility(View.GONE);
                mName.setText("");
                mName.setVisibility(View.GONE);
            } catch (JSONException e) {
                e.printStackTrace();
            }
        }
    }, new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error) {

        }
    })

    {
        @Override
        protected Map<String, String> getParams() throws AuthFailureError {
            Map<String, String> params = new HashMap<>();
            params.put("photo_one",imageString(bitmap));
            params.put("mobile",mName.getText().toString().trim());

            return params;
        }
    };
    MySingleton.getInstance(MainActivity.this).addToRequestQue(stringRequest);

}

This is the error I am getting.

org.json.JSONException: End of input at character 0 of at org.json.JSONTokener.syntaxError(JSONTokener.java:449) at org.json.JSONTokener.nextValue(JSONTokener.java:97) at org.json.JSONObject.(JSONObject.java:156) at org.json.JSONObject.(JSONObject.java:173) at com.example.athis.practiceproject4.MainActivity$1.onResponse(MainActivity.java:93)

Which is JSONObject jsonObject = new JSONObject(response); line. What is wrong?

check your response .

IntelliJ Amiya
– IntelliJ Amiya

2017-08-23 06:58:56 +00:00
Commented Aug 23, 2017 at 6:58 — IntelliJ Amiya
– IntelliJ Amiya, Commented Aug 23, 2017 at 6:58
is your response valid ? and is it json object/array ?

Manohar
– Manohar

2017-08-23 07:00:14 +00:00
Commented Aug 23, 2017 at 7:00 — Manohar
– Manohar, Commented Aug 23, 2017 at 7:00
what is the value of response string

Ramz
– Ramz

2017-08-23 07:01:14 +00:00
Commented Aug 23, 2017 at 7:01 — Ramz
– Ramz, Commented Aug 23, 2017 at 7:01

Gabriele Mariotti · Accepted Answer · 2017-08-23 07:03:02Z

2

org.json.JSONException: End of input at character 0 of at

You are getting an empty response.

answered Aug 23, 2017 at 7:03

Gabriele Mariotti

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Comments

Nikhil Jadhav · Accepted Answer · 2017-08-23 07:03:16Z

1

check you response as error org.json.JSONException: End of input at character 0 of at indicates that your response string is null or 0, kindly check for your response string first.

answered Aug 23, 2017 at 7:03

Nikhil Jadhav

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Comments

Vishal Vaishnav · Accepted Answer · 2017-08-23 07:01:51Z

0

Try using below code;

  HashMap<String, String> params = new HashMap<>();
  params.put("photo_one",imageString(bitmap));
  params.put("mobile",mName.getText().toString().trim());

    final ProgressDialog progressDialog = new ProgressDialog(LoginActivity.this);
    progressDialog.setMessage("Fetching Data....");
    progressDialog.show();

    JsonObjectRequest req = new JsonObjectRequest(uploadUrl, new JSONObject(params),
            new Response.Listener<JSONObject>() {
                @Override
                public void onResponse(JSONObject response) {
                    progressDialog.dismiss();

                    String success = (String) response.opt("success");
                    if (success.equals("1") )
                    {

                        // Do your Task here....

                    }
                    else
                    {
                        Toast.makeText(getApplicationContext(),"Invalid Username & Password...",Toast.LENGTH_LONG).show();
                    }
                }
            }, new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error) {

            progressDialog.dismiss();

        }
    });
    RequestQueue requestQueue = Volley.newRequestQueue(this);
    requestQueue.add(req);

answered Aug 23, 2017 at 7:01

Vishal Vaishnav

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3 Comments

R.H Over a year ago

What should i write in // Do your Task here... ? I just want to upload one image and text, which i think params.put is already done.

Vishal Vaishnav Over a year ago

Simply put Toast there for successfully image uploaded

R.H Over a year ago

Getting D/Volley: [46298] BasicNetwork.logSlowRequests: HTTP response for request=<[ ] Whats wrong?

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