Paytm付款网关中的回调网址

Question

我已经在我的Android应用程序中集成了Paytm Payment Gateway。但是他们的文档中提到的生产模式的回调URL并未将我重定向到带有响应的应用程序。 它只是打开一个页面，显示重定向到我的应用程序，然后什么也没有发生，并且在按返回按钮时会弹出一个对话框，询问是否取消交易，即使交易成功也是如此。 他们的文档中提到的url在下面给出，这是行不通的。还有其他一些回调URL可以使用吗？

https://securegw-stage.paytm.in/theia/paytmCallback?ORDER_ID=$orderid

使用的代码是：

     RequestQueue requestQueue= Volley.newRequestQueue(UpiPayment.this);

            StringRequest stringRequest=new StringRequest(Request.Method.POST, url, new Response.Listener<String>() {
                @Override
                public void onResponse(String response) {

                    try {
                        JSONObject jsonObject=new JSONObject(response);
                        if(jsonObject.has("CHECKSUMHASH")){
                            String CHECKSUMHASH=jsonObject.getString("CHECKSUMHASH");

                            PaytmPGService paytmPGService=PaytmPGService.getProductionService();

                            HashMap<String, String> paramMap = new HashMap<String,String>();
                            paramMap.put( "MID" , mid);
                            paramMap.put( "ORDER_ID" , orderId);
                            paramMap.put( "CUST_ID" , customerId);
                            paramMap.put( "CHANNEL_ID" , "WAP");
                            paramMap.put( "TXN_AMOUNT" , amount);
                            paramMap.put( "WEBSITE" , "DEFAULT");
                            paramMap.put( "INDUSTRY_TYPE_ID" , "Retail");
                            paramMap.put( "CALLBACK_URL", callbackUrl);
                            paramMap.put("CHECKSUMHASH",CHECKSUMHASH);

                            PaytmOrder order=new PaytmOrder(paramMap);
                            paytmPGService.initialize(order,null);

                            paytmPGService.startPaymentTransaction(UpiPayment.this, true, true, new PaytmPaymentTransactionCallback() {
                                @Override
                                public void onTransactionResponse(Bundle inResponse) {
                                    Toast.makeText(UpiPayment.this, "Payment Transaction response " + inResponse.toString(), Toast.LENGTH_LONG).show();

                                    if(inResponse.getString("STATUS").equals("TXN_SUCCESS")){

                                        Toast.makeText(UpiPayment.this, "payment successful", Toast.LENGTH_SHORT).show();
                                    }
                                }

                                @Override
                                public void networkNotAvailable() {
                                    Toast.makeText(getApplicationContext(), "Network connection error: Check your internet connectivity", Toast.LENGTH_LONG).show();
                                }

                                @Override
                                public void clientAuthenticationFailed(String inErrorMessage) {
                                    Toast.makeText(getApplicationContext(), "Authentication failed: Server error" + inErrorMessage.toString(), Toast.LENGTH_LONG).show();
                                }

                                @Override
                                public void someUIErrorOccurred(String inErrorMessage) {
                                    Toast.makeText(getApplicationContext(), "UI Error " + inErrorMessage , Toast.LENGTH_LONG).show();

                                }

                                @Override
                                public void onErrorLoadingWebPage(int iniErrorCode, String inErrorMessage, String inFailingUrl) {
                                    Toast.makeText(getApplicationContext(), "Unable to load webpage " + inErrorMessage.toString(), Toast.LENGTH_LONG).show();
                                }

                                @Override
                                public void onBackPressedCancelTransaction() {
                                    Toast.makeText(getApplicationContext(), "Transaction cancelled" , Toast.LENGTH_LONG).show();
                                }

                                @Override
                                public void onTransactionCancel(String inErrorMessage, Bundle inResponse) {
                                    Toast.makeText(getApplicationContext(), "Unable to load webpage " + inResponse.toString(), Toast.LENGTH_LONG).show();
                                }
                            });



                        }


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

                }
            }, new Response.ErrorListener() {
                @Override
                public void onErrorResponse(VolleyError error) {
                    Toast.makeText(UpiPayment.this, "Something went wrong", Toast.LENGTH_SHORT).show();
                }
            }){
                @Override
                protected Map<String, String> getParams() throws AuthFailureError {


                    Map<String, String> paramMap = new HashMap<String,String>();
                    paramMap.put( "MID" , mid);
                    paramMap.put( "ORDER_ID" , orderId);
                    paramMap.put( "CUST_ID" , customerId);
                    paramMap.put( "CHANNEL_ID" , "WAP");
                    paramMap.put( "TXN_AMOUNT" , amount);
                    paramMap.put( "WEBSITE" , "DEFAULT");
                    paramMap.put( "INDUSTRY_TYPE_ID" , "Retail");
                    paramMap.put( "CALLBACK_URL", callbackUrl);

                    return paramMap;

                }
            };

            requestQueue.add(stringRequest);