PayUmoney Android integration (using php as backend)

Hello guys,

             Hope u all are doing good.Our today's tutorial is PayUmoney Android integration. As we all know PayUmoney is a payment gateway it work electronic payment service to your website through its various partnerships with banks and payment instrument companies. Through PayUmoney , your clients would be able to make electronic payments through credit card, debit card and online net banking account.

Steps to integrate with the PayUmoney Android SDK –

1.Download PayUmoney Android SDK from PayUmoney site.
2.Create new android project named PayMoneyDemo.(or whattever you want)
3.Import PayUmoney SDK as a module or Gradle Project-

         a. Go to Project Structure under file in the Android Studio.

b. Click on New Module (+ sign).

c. Select ‘Import Gradle Project’.(img)

d. Browse and select the PayUmoney SDK folder from PayUmoney Android SDK download . Now       click on Next.(img)

4. Add PayUmoney SDK as a dependency in your project.
       a. Go to Project Structure under file in the Android Studio.
       b. Click on your app and then select the Dependencies tab on the top.
           Then click on Add (+ sign) on the top right corner and click on Module Dependency.
           After this, select PayUmoney SDK.This will add PayUmoney SDK as a dependency to app.

Android PayUmoney integration coding

            Once you add the SDK as module you will need to call the some PayUmoney functions from app when the user clicks on Pay Now button on your app.

 1. In your activity_main.layout file add following lines.
 //activity_main.layout
 <?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    tools:context="com.myworldweb.payumoneydemo.MainActivity">

    <EditText

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:hint="Amount"

        android:id="@+id/edit_amount"

        android:layout_centerHorizontal="true"

        android:layout_alignParentTop="true" />

    <Button

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="PAY NOW"

        android:id="@+id/button_pay"

        android:layout_below="@+id/edit_amount"

        android:layout_centerHorizontal="true"

        android:layout_marginTop="47dp"

        android:onClick="makePayment"/>

</RelativeLayout>

 2.In your MainActivity.java add following code

//MainActivity.java

package com.myworldweb.payumoneydemo;

import android.content.DialogInterface;

import android.content.Intent;

import android.support.v7.app.AlertDialog;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.util.Log;

import android.view.View;

import android.widget.Button;

import android.widget.EditText;

import android.widget.Toast;

import com.android.volley.AuthFailureError;

import com.android.volley.NoConnectionError;

import com.android.volley.Request;

import com.android.volley.Response;

import com.android.volley.VolleyError;

import com.android.volley.toolbox.StringRequest;

import com.android.volley.toolbox.Volley;

import com.payUMoney.sdk.PayUmoneySdkInitilizer;

import com.payUMoney.sdk.SdkConstants;

import com.payUMoney.sdk.utils.SdkHelper;

import org.json.JSONArray;

import org.json.JSONException;

import org.json.JSONObject;

import java.security.MessageDigest;

import java.security.NoSuchAlgorithmException;

import java.util.HashMap;

import java.util.Map;

public class MainActivity extends AppCompatActivity {

    EditText amt = null;

    Button pay = null;

    String txnId;

    public static final String TAG = "PayUMoneySDK Sample";

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        amt = (EditText) findViewById(R.id.edit_amount);

        pay = (Button) findViewById(R.id.button_pay);

    }

    private boolean isDouble(String str) {

        try {

            Double.parseDouble(str);

            return true;

        } catch (NumberFormatException e) {

            return false;

        }

    }

    private double getAmount() {

        Double amount = 10.0;

        if (isDouble(amt.getText().toString())) {

            amount = Double.parseDouble(amt.getText().toString());

            return amount;

        } else {

            Toast.makeText(getApplicationContext(), "Paying Default Amount ₹10", Toast.LENGTH_LONG).show();

            return amount;

        }

    }

    public void makePayment(View view) {

        String phone = "8380894057";

        String productName = "purse";

        String firstName = "meera";

         txnId = "0nf7" + System.currentTimeMillis();

        String email="meerag@gmail.com";

        String sUrl = "https://test.payumoney.com/mobileapp/payumoney/success.php";

        String fUrl = "https://test.payumoney.com/mobileapp/payumoney/failure.php";

        String udf1 = "";

        String udf2 = "";

        String udf3 = "";

        String udf4 = "";

        String udf5 = "";

        boolean isDebug = true;  //for live mode make it false

        String key = "dRQuiA";   //for live mode add key given by PayUmoney

        String merchantId = "4928174";  ////for live mode add merchantId given by PayUmoney

        PayUmoneySdkInitilizer.PaymentParam.Builder builder = new PayUmoneySdkInitilizer.PaymentParam.Builder();

        builder.setAmount(getAmount())

                .setTnxId(txnId)

                .setPhone(phone)

                .setProductName(getProductInfo())  //setting ur product information

                .setFirstName(firstName)

                .setEmail(email)

                .setsUrl(sUrl)

                .setfUrl(fUrl)

                .setUdf1(udf1)

                .setUdf2(udf2)

                .setUdf3(udf3)

                .setUdf4(udf4)

                .setUdf5(udf5)

                .setIsDebug(isDebug)

                .setKey(key)

                .setMerchantId(merchantId)

        ;

        PayUmoneySdkInitilizer.PaymentParam paymentParam = builder.build();

//             server side call required to calculate hash with the help of <salt>

//             <salt> is already shared along with merchant <key>

     /*        serverCalculatedHash =sha512(key|txnid|amount|productinfo|firstname|email|udf1|udf2|udf3|udf4|udf5|<salt>)

             (e.g.)

             sha512(FCstqb|0nf7|10.0|product_name|piyush|piyush.jain@payu.in||||||MBgjYaFG)

             9f1ce50ba8995e970a23c33e665a990e648df8de3baf64a33e19815acd402275617a16041e421cfa10b7532369f5f12725c7fcf69e8d10da64c59087008590fc

*/

        // Recommended

       calculateServerSideHashAndInitiatePayment(paymentParam);

//        testing purpose

    /*   String salt = "";

        String serverCalculatedHash=hashCal(key+"|"+txnId+"|"+getAmount()+"|"+productName+"|"

                +firstName+"|"+email+"|"+udf1+"|"+udf2+"|"+udf3+"|"+udf4+"|"+udf5+"|"+salt);

        paymentParam.setMerchantHash(serverCalculatedHash);*/

      //  PayUmoneySdkInitilizer.startPaymentActivityForResult(MainActivity.this, paymentParam);

    }

    public static String hashCal(String str) {

        byte[] hashseq = str.getBytes();

        StringBuilder hexString = new StringBuilder();

        try {

            MessageDigest algorithm = MessageDigest.getInstance("SHA-512");

            algorithm.reset();

            algorithm.update(hashseq);

            byte messageDigest[] = algorithm.digest();

            for (byte aMessageDigest : messageDigest) {

                String hex = Integer.toHexString(0xFF & aMessageDigest);

                if (hex.length() == 1) {

                    hexString.append("0");

                }

                hexString.append(hex);

            }

        } catch (NoSuchAlgorithmException ignored) {

        }

        return hexString.toString();

    }

    private void calculateServerSideHashAndInitiatePayment(final PayUmoneySdkInitilizer.PaymentParam paymentParam) {

        // Replace your server side hash generator API URLString url = "https://test.payumoney.com/payment/op/calculateHashForTest";

        String url = "https://test.payumoney.com/payment/op/calculateHashForTest";

        Toast.makeText(this, "Please wait... Generating hash from server ... ", Toast.LENGTH_LONG).show();

        StringRequest jsonObjectRequest = new StringRequest(Request.Method.POST, url, new Response.Listener<String>() {

            @Override

            public void onResponse(String response) {

                Log.i("Meera", "Server calculated Hash :  " + response);

                try {

                    JSONObject jsonObject = new JSONObject(response);

                    if (jsonObject.has(SdkConstants.STATUS)) {

                        String status = jsonObject.optString(SdkConstants.STATUS);

                        if (status != null || status.equals("1")) {

                            String hash = jsonObject.getString(SdkConstants.RESULT);

                            Log.i("app_activity", "Server calculated Hash :  " + hash);

                            paymentParam.setMerchantHash(hash);

                            PayUmoneySdkInitilizer.startPaymentActivityForResult(MainActivity.this, paymentParam);

                        } else {

                            Toast.makeText(MainActivity.this,

                                    jsonObject.getString(SdkConstants.RESULT),

                                    Toast.LENGTH_SHORT).show();

                        }

                    }

                } catch (JSONException e) {

                    e.printStackTrace();

                }

            }

        }, new Response.ErrorListener() {

            @Override

            public void onErrorResponse(VolleyError error) {

                if (error instanceof NoConnectionError) {

                    Toast.makeText(MainActivity.this,

                            MainActivity.this.getString(R.string.connect_to_internet),

                            Toast.LENGTH_SHORT).show();

                } else {

                    Toast.makeText(MainActivity.this,

                            error.getMessage(),

                            Toast.LENGTH_SHORT).show();

                }

            }

        }) {

            @Override

            protected Map<String, String> getParams() throws AuthFailureError {

               Map<String,String> map=new HashMap<String ,String>();

                return paymentParam.getParams();

            }

        };

        Volley.newRequestQueue(this).add(jsonObjectRequest);

    }

    protected void onActivityResult(int requestCode, int resultCode, Intent data) {

        if (requestCode == PayUmoneySdkInitilizer.PAYU_SDK_PAYMENT_REQUEST_CODE) {

            if(data != null && data.hasExtra("result")){

              String responsePayUmoney = data.getStringExtra("result");

                if(SdkHelper.checkForValidString(responsePayUmoney))

                    showDialogMessage(responsePayUmoney);

            } else {

                showDialogMessage("Unable to get Status of Payment");

            }

            if (resultCode == RESULT_OK) {

                Log.i(TAG, "Success - Payment ID : " + data.getStringExtra(SdkConstants.PAYMENT_ID));

                String paymentId = data.getStringExtra(SdkConstants.PAYMENT_ID);

                showDialogMessage("Payment Success Id : " + paymentId);

            } else if (resultCode == RESULT_CANCELED) {

                Log.i(TAG, "failure");

                showDialogMessage("cancelled");

            } else if (resultCode == PayUmoneySdkInitilizer.RESULT_FAILED) {

                Log.i("app_activity", "failure");

                if (data != null) {

                    if (data.getStringExtra(SdkConstants.RESULT).equals("cancel")) {

                    } else {

                        showDialogMessage("failure");

                    }

                }

                //Write your code if there's no result

            } else if (resultCode == PayUmoneySdkInitilizer.RESULT_BACK) {

                Log.i(TAG, "User returned without login");

                showDialogMessage("User returned without login");

            }

        }

    }

    private void showDialogMessage(String message) {

        AlertDialog.Builder builder = new AlertDialog.Builder(this);

        builder.setTitle(TAG);

        builder.setMessage(message);

        builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {

            @Override

            public void onClick(DialogInterface dialog, int which) {

                dialog.dismiss();

            }

        });

        builder.show();

    }

    public String getProductInfo()

    {

        JSONObject productInfoObj = new JSONObject();

        JSONArray productPartsArr = new JSONArray();

        JSONObject productPartsObj1 = new JSONObject();

        JSONObject paymentIdenfierParent = new JSONObject();

        JSONArray paymentIdentifiersArr = new JSONArray();

        JSONObject paymentPartsObj1 = new JSONObject();

        JSONObject paymentPartsObj2 = new JSONObject();

        try {

            // Payment Parts

            productPartsObj1.put("name", "purse");

            productPartsObj1.put("description", "red colour");

            productPartsObj1.put("value", "1");

            productPartsObj1.put("isRequired", "true");

            productPartsObj1.put("settlementEvent", "EmailConfirmation");

            productPartsArr.put(productPartsObj1);

            productInfoObj.put("paymentParts", productPartsArr);

            // Payment Identifiers

            paymentPartsObj1.put("field", "CompletionDate");

            paymentPartsObj1.put("value", "31/10/2017");

            paymentIdentifiersArr.put(paymentPartsObj1);

            paymentPartsObj2.put("field", "TxnId");

            paymentPartsObj2.put("value", txnId);

            paymentIdentifiersArr.put(paymentPartsObj2);

            paymentIdenfierParent.put("paymentIdentifiers",

                    paymentIdentifiersArr);

            productInfoObj.put("", paymentIdenfierParent);

        } catch (JSONException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

        return productInfoObj.toString();

    }

}

 3. Now run app, when u click pay now button it will go to payUmoney login,create account or log in as guest user,after that for testing you have to use following card details given by payU(for testing purpose only) 

 Test Card Number: 5123456789012346 
 Test CVV: 123
 Test Expiry: May 2017

Changes for Live mode

Still now we have seen coding for test mode for live mode u have to register at payUmoney as merchant. After successfull registration they will provide u key, merchantId and salt.Use those credential for live mode. 

 Live mode make following changes in your MainActivity.java

1. Inside makePayment method- 
    boolean isDebug = false; //for live mode make it false
    String key = "XXXXXX"; //for live mode add key given by PayUmoney
    String merchantId = "XXXXXX"; ////for live mode add merchantId given by PayUmoney

2.Create you own php at server to generate hashes- payUHash.php
    <?php

$key=$_POST["key"];

$salt="XXXXXXXX";
$txnId=$_POST["txnid"];
$amount=$_POST["amount"];
$productName=$_POST["productInfo"];
$firstName=$_POST["firstName"];
$email=$_POST["email"];
$udf1=$_POST["udf1"];ch
$udf2=$_POST["udf2"];
$udf3=$_POST["udf3"];
$udf4=$_POST["udf4"];
$udf5=$_POST["udf5"];

$payhash_str = $key . '|' . checkNull($txnId) . '|' .checkNull($amount)  . '|' .checkNull($productName)  . '|' . checkNull($firstName) . '|' . checkNull($email) . '|' . checkNull($udf1) . '|' . checkNull($udf2) . '|' . checkNull($udf3) . '|' . checkNull($udf4) . '|' . checkNull($udf5) . '|' . $salt;


function checkNull($value) {
            if ($value == null) {
                  return '';
            } else {
                  return $value;
            }
      }


$hash = strtolower(hash('sha512', $payhash_str));
$arr['result'] = $hash;
$arr['status']=0;
$arr['errorCode']=null;
$arr['responseCode']=null;
$arr['hashtest']=$payhash_str;
$output=$arr;


echo json_encode($output);

?>

3. Inside calculateServerSideHashAndInitiatePayment method replace your server side hash        generation php url with payus php url String url = "https://(your domain name)/payUHash.php".

4. Now your payu app is all set to live mode. Run it. Check it for live card credential or netbanking pay option.

Thanks,
Meera