How to get resultCode and requestCode in UPI payment gateway using Android Studio and Java?

My issue is to get the proper response for the UPI payment gateway like "Payment Success" or "Error". I tried a little bit, but this returns 0 as "resultCode" and "1" as "requestCode". But I need "resultCode" as -1. While using this code payment gets successful and also amount gets transferred but the response only not coming exactly. Kindly help me to clear this issue...

final int UPI_PAYMENT = 0;

payUsingUpi("TESTNAME", "testname@123","testing", "1");

public void payUsingUpi(  String name,String upiId, String note, String amount) {
        Log.e("main ", "name "+name +"--up--"+upiId+"--"+ note+"--"+amount);
        Uri uri = Uri.parse("upi://pay").buildUpon()
                .appendQueryParameter("pa", upiId)
                .appendQueryParameter("pn", name)
                .appendQueryParameter("tn", note)
                .appendQueryParameter("am", amount)
                .appendQueryParameter("cu", "INR")
                .build();
        Intent upiPayIntent = new Intent(Intent.ACTION_VIEW);
        upiPayIntent.setData(uri);
        Intent chooser = Intent.createChooser(upiPayIntent, "Pay with");
        if(null != chooser.resolveActivity(getPackageManager())) {
            startActivityForResult(chooser, UPI_PAYMENT);
        } else {
            Toast.makeText(FinalFormActivity.this,"No UPI app found, please install one to continue",Toast.LENGTH_SHORT).show();
        }
    }

@Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        Log.e("main ", "response resultCode :  "+resultCode );
        Log.e("main ", "response requestCode :  "+requestCode );
        Log.e("main ", "data : "+data );
        switch (requestCode) {
            case UPI_PAYMENT:
                if ((RESULT_OK == resultCode) || (resultCode == 11)) {
                    if (data != null) {
                        String trxt = data.getStringExtra("response");
                        Log.e("UPI", "onActivityResult: " + trxt);
                        ArrayList<String> dataList = new ArrayList<>();
                        dataList.add(trxt);
                        upiPaymentDataOperation(dataList);
                    } else {
                        Log.e("UPI", "onActivityResult: " + "Return data is null");
                        ArrayList<String> dataList = new ArrayList<>();
                        dataList.add("nothing");
                        upiPaymentDataOperation(dataList);
                    }
                } else {
                    Log.e("UPI", "onActivityResult: " + "Return data is null with back button");
                    ArrayList<String> dataList = new ArrayList<>();
                    dataList.add("nothing");
                    upiPaymentDataOperation(dataList);
                }
                break;
        }
    }

private void upiPaymentDataOperation(ArrayList<String> data) {
        if (isConnectionAvailable(FinalFormActivity.this)) {
            String str = data.get(0);
            Log.e("UPIPAY", "upiPaymentDataOperation: "+str);
            String paymentCancel = "";
            if(str == null) str = "discard";
            String status = "";
            String approvalRefNo = "";
            String response[] = str.split("&");
            for (int i = 0; i < response.length; i++) {
                String equalStr[] = response[i].split("=");
                if(equalStr.length >= 2) {
                    if (equalStr[0].toLowerCase().equals("Status".toLowerCase())) {
                        status = equalStr[1].toLowerCase();
                    }
                    else if (equalStr[0].toLowerCase().equals("ApprovalRefNo".toLowerCase()) || equalStr[0].toLowerCase().equals("txnRef".toLowerCase())) {
                        approvalRefNo = equalStr[1];
                    }
                }
                else {
                    paymentCancel = "Payment cancelled by user.";
                }
            }
            if (status.equals("success")) {
                Toast.makeText(FinalFormActivity.this, "Transaction successful.", Toast.LENGTH_SHORT).show();
                Log.e("UPI", "payment successfull: "+approvalRefNo);
            }
            else if("Payment cancelled by user.".equals(paymentCancel)) {
                Toast.makeText(FinalFormActivity.this, "Payment cancelled by user.", Toast.LENGTH_SHORT).show();
                Log.e("UPI", "Cancelled by user: "+approvalRefNo);
            }
            else {
                Toast.makeText(FinalFormActivity.this, "Transaction failed.Please try again", Toast.LENGTH_SHORT).show();
                Log.e("UPI", "failed payment: "+approvalRefNo);
            }
        } else {
            Log.e("UPI", "Internet issue: ");
            Toast.makeText(FinalFormActivity.this, "Internet connection is not available. Please check and try again", Toast.LENGTH_SHORT).show();
        }
    }
    public static boolean isConnectionAvailable(Context context) {
        ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        if (connectivityManager != null) {
            NetworkInfo netInfo = connectivityManager.getActiveNetworkInfo();
            if (netInfo != null && netInfo.isConnected()
                    && netInfo.isConnectedOrConnecting()
                    && netInfo.isAvailable()) {
                return true;
            }
        }
        return false;
    }