Some error occuered

[bharatkumaremani]

I have called this PHP to hash generation and the sdk throws (some error occuered ) toast. hash generation used by me. https://gist.github.com/mayur19/26417eeba02f5e5ced8138f4d9040d6a

            RequestQueue requestQueue = Volley.newRequestQueue(this);
            String URL = "https://www.myappdemo.com/payumoney/payUmoneyHashGenerator.php";
            StringRequest stringRequest = new StringRequest(Request.Method.POST, URL, new com.android.volley.Response.Listener<String>() {

                @Override
                public void onResponse(String response) {

                    Log.e("VOLLEY", response);

                    try {
                        JSONObject result = new JSONObject(response.toString());
                        String merchantHash=result.getString("result");
                        payNowButton.setEnabled(true);

                        if (merchantHash.isEmpty() || merchantHash.equals("")) {
                            Toast.makeText(MainActivity.this, "Could not generate hash", Toast.LENGTH_SHORT).show();
                        } else {
                            mPaymentParams.setMerchantHash(merchantHash);

                            if (AppPreference.selectedTheme != -1) {
                                PayUmoneyFlowManager.startPayUMoneyFlow(mPaymentParams, MainActivity.this, AppPreference.selectedTheme, mAppPreference.isOverrideResultScreen());
                            } else {
                                PayUmoneyFlowManager.startPayUMoneyFlow(mPaymentParams, MainActivity.this, R.style.AppTheme_default, mAppPreference.isOverrideResultScreen());
                            }
                        }
                    }

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

            }, new com.android.volley.Response.ErrorListener() {
                @Override
                public void onErrorResponse(VolleyError error) {

                }
            }) {

                @Override
                public Map<String, String> getHeaders() throws AuthFailureError {

                    AppEnvironment appEnvironment = ((BaseApplication) getApplication()).getAppEnvironment();
                    Map<String, String> params = new HashMap<String, String>();
                    params.put("key",appEnvironment.merchant_Key() );
                    params.put("txnId", txnId);
                    params.put("amount", String.valueOf(amount));
                    params.put("productInfo",productName);
                    params.put("firstName", firstName);
                    params.put("email", email);
                    params.put("udf1","");
                    params.put("udf2","");
                    params.put("udf3","");
                    params.put("udf4","");
                    params.put("udf5","");
                    return params;
                }

                @Override
                protected com.android.volley.Response<String> parseNetworkResponse(NetworkResponse response) {

                    String parsed;
                    try {
                        parsed = new String(response.data, HttpHeaderParser.parseCharset(response.headers));
                    } catch (UnsupportedEncodingException e) {
                        parsed = new String(response.data);
                    }
                    return com.android.volley.Response.success(parsed, HttpHeaderParser.parseCacheHeaders(response));

                }
            };

            requestQueue.add(stringRequest);

this is my code

[MNGsulochana]

Better dont prefer String.valueOf(amount) while giving params,better convert before and put