Paytm Integration in Android Example – Accepting Payments with Paytm

January 11, 2018January 11, 2018 by Belal Khan

Paytm is the most popular mobile wallet and payment method used in India. So I thought to publish a Paytm Integration in Android Example.
In this post, we will learn how can we add a Pay with Paytm method in our android application.
There is the official documentation about integrating Paytm at PayWithPaytm/Developer but that is very confusing, and if you are a newbie then you can face troubles. Here I will show you every step in detailed explanation so you can easily integrate Paytm payments in your application.

Table of Contents

1 Getting Credentials from Paytm
2 How to Integrate Paytm Payment into Android Application?
3 Paytm Integration in Android Example
- 3.1 Configuring the Paytm Checksum Kit
- 3.2 Integrating Paytm Payment in Android Project
4 Paytm Integration in Android Example – Source Code
- 4.1 Related

Getting Credentials from Paytm

The first step is getting credential from Paytm. Paytm provides it to all the merchants. So you need to signup as a merchant in Paytm. But the problem is it takes time, and you need to submit some docs like GST, Bank Account details.
But you do not need to worry as the developer can get sandbox access for development purposes.

Go to this link and sign in with your Paytm account.
You do not need to submit any details after Signup just click on Sandbox Access link as shown in the below image.

Now you will see your Sandbox Credential.

You are going to use the above credentials. Now lets integrate the Paytm Payment.

How to Integrate Paytm Payment into Android Application?

Let’s first understand how we add Paytm Payment in our Application. We need to perform these two steps.

Generate CHECKSUM on our server.
Accept Payment with Paytm SDK.

We need to generate the Checksum on our server, so the process requires some server-side implementation as well. And here on the server side, I am going to use PHP with Xampp Server.

And for sending Request from android side I will be using Retrofit.

Paytm Integration in Android Example

Configuring the Paytm Checksum Kit

Now let’s start the real process. We will start with the server-side implementation.

Open XAMPP Server and Start the Server. (Skip this step if you are using a live server).
Then download the Paytm App Checksum Kit. And paste it to your server’s root directory. (For XAMPP it is c:/xampp/htdocs by default)

I have renamed the folder to only paytm to make it short and simple.
Inside the folder we have a file named generateChecksum.php and we need to use it for generating checksum.
But first we need to put our Paytm Merchant Key in the configuration.
Go to config_paytm.php (it is inside the lib folder paytm/lib/config_paytm.php), and put your Paytm Merchant Key.

<?php

//Change the value of PAYTM_MERCHANT_KEY constant with details received from Paytm.

define('PAYTM_MERCHANT_KEY', 'YOUR_MERCHANT_KEY_HERE');

That’s it for the server side implementation, we just need to route to generateChecksum.php file. So it is localhost/paytm/generateChecksum.php.

But remember using localhost will not work you need to find the IP. You can see it using the ipconfig command, and if you are using a live server, then you can use the URL with your domain.

Now, let’s move ahead by creating an Android Studio Project.

Integrating Paytm Payment in Android Project

Creating a New Project

First, we will create a new Android Studio Project. I have create a project named PaytmPaymentSample with an Empty Activity.

Adding Paytm SDK

Now download the Paytm SDK. Inside the SDK you will find a file named PGSDK_V2.1.jar. We need to add this file in our project dependencies.
So first on the project explorer select Project.

Then inside app/lib paste the PGSDK_V2.1.jar that we downloaded.

Now click on File->Project Structure.

Now from the top tabs go to dependency, and from the right green plus icon select jar dependency.

Now select the jar from the lib folder that you added, and hit ok.

That’s it the Paytm SDK is added.

Adding Permissions and Paytm Activity

We need to add INTERNET and ACCESS_NETWORK_STATE permission, and PaytmPGActivity (The activity comes with the Paytm SDK that we already added).
So open AndroidManifest.xml and modify it as below.

<?xml version="1.0" encoding="utf-8"?>

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

package="simplifiedcoding.net.paytmpaymentsample">

<uses-permission android:name="android.permission.INTERNET"/>

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>

<application

android:allowBackup="true"

android:icon="@mipmap/ic_launcher"

android:label="@string/app_name"

android:roundIcon="@mipmap/ic_launcher_round"

android:supportsRtl="true"

android:theme="@style/AppTheme">

<intent-filter>

</intent-filter>

</activity>

<!--

Add this activity to your manifest

it comes with the Paytm SDK

-->

<activity android:name="com.paytm.pgsdk.PaytmPGActivity"

android:screenOrientation="portrait" android:configChanges="keyboardHidden|orientation|keyboard"/>

</application>

</manifest>

Adding Retrofit and Gson

As I told you above that, we are going to use the Retrofit Library for sending network request. So for this, we need to Add Retrofit and Gson.
Come inside your app level build.gradle file and add both libraries.

compile 'com.squareup.retrofit2:retrofit:2.2.0'

compile 'com.squareup.retrofit2:converter-gson:2.2.0'

Defining Constants

Now, we will define all the required constants in a separate class. For this create a new class named Constants.java and define the following inside.
Remember you need to change the first 3 values according to the Paytm Credentials you got.

package simplifiedcoding.net.paytmpaymentsample;

/**

* Created by Belal on 1/10/2018.

public class Constants {

public static final String M_ID = "xxxxxxxx"; //Paytm Merchand Id we got it in paytm credentials

public static final String CHANNEL_ID = "WEB"; //Paytm Channel Id, got it in paytm credentials

public static final String INDUSTRY_TYPE_ID = "Retail"; //Paytm industry type got it in paytm credential

public static final String WEBSITE = "APP_STAGING";

public static final String CALLBACK_URL = "https://pguat.paytm.com/paytmchecksum/paytmCallback.jsp";

}

Creating User Interface

Now we will create a very Simple User Interface. So come inside activity_main.xml and write the following code.

<?xml version="1.0" encoding="utf-8"?>

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

xmlns:app="http://schemas.android.com/apk/res-auto"

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

android:layout_width="match_parent"

android:layout_height="match_parent"

android:padding="8dp"

tools:context="simplifiedcoding.net.paytmpaymentsample.MainActivity">

<ImageView

android:id="@+id/imageView"

android:layout_width="120dp"

android:layout_height="90dp"

android:background="@drawable/macbook_air"

android:padding="4dp" />

<TextView

android:id="@+id/textViewTitle"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_marginLeft="5dp"

android:layout_toRightOf="@id/imageView"

android:text="Apple MacBook Air Core i5 5th Gen - (8 GB/128 GB SSD/Mac OS Sierra)"

android:textAppearance="@style/Base.TextAppearance.AppCompat.Small"

android:textColor="#000000" />

<TextView

android:id="@+id/textViewShortDesc"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_below="@id/textViewTitle"

android:layout_marginLeft="5dp"

android:layout_marginTop="5dp"

android:layout_toRightOf="@id/imageView"

android:text="13.3 Inch, 256 GB"

android:textAppearance="@style/Base.TextAppearance.AppCompat.Small" />

<TextView

android:id="@+id/textViewRating"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_below="@id/textViewShortDesc"

android:layout_marginLeft="5dp"

android:layout_marginTop="5dp"

android:layout_toRightOf="@id/imageView"

android:background="@color/colorPrimary"

android:paddingLeft="15dp"

android:paddingRight="15dp"

android:text="4.7"

android:textAppearance="@style/Base.TextAppearance.AppCompat.Small.Inverse"

android:textStyle="bold" />

<TextView

android:id="@+id/textViewPrice"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_below="@id/textViewRating"

android:layout_marginLeft="5dp"

android:layout_marginTop="5dp"

android:layout_toRightOf="@id/imageView"

android:text="10.00"

android:textAppearance="@style/Base.TextAppearance.AppCompat.Large"

android:textStyle="bold" />

<Button

android:id="@+id/buttonBuy"

android:layout_toRightOf="@id/imageView"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_below="@id/textViewPrice"

android:text="Buy" />

</RelativeLayout>

The above code will generate the following layout.

Make sure you add an image named macbook_air in the drawable folder. Or if the name of your image is different, then change it in the ImageView of your layout.

Creating Retrofit Models and Interface

Creating Models

We need two classes one is for CHECKSUM and other is for storing Paytm payment details.

First create a class named Checksum.java and write the following code.

package simplifiedcoding.net.paytmpaymentsample;

import com.google.gson.annotations.SerializedName;

/**

* Created by Belal on 1/10/2018.

public class Checksum {

@SerializedName("CHECKSUMHASH")

private String checksumHash;

@SerializedName("ORDER_ID")

private String orderId;

@SerializedName("payt_STATUS")

private String paytStatus;

public Checksum(String checksumHash, String orderId, String paytStatus) {

this.checksumHash = checksumHash;

this.orderId = orderId;

this.paytStatus = paytStatus;

}

public String getChecksumHash() {

return checksumHash;

}

public String getOrderId() {

return orderId;

}

public String getPaytStatus() {

return paytStatus;

}

Now create Paytm.java and write the following code.

package simplifiedcoding.net.paytmpaymentsample;

import android.util.Log;

import com.google.gson.annotations.SerializedName;

import java.util.UUID;

/**

* Created by Belal on 1/10/2018.

public class Paytm {

@SerializedName("MID")

String mId;

@SerializedName("ORDER_ID")

String orderId;

@SerializedName("CUST_ID")

String custId;

@SerializedName("CHANNEL_ID")

String channelId;

@SerializedName("TXN_AMOUNT")

String txnAmount;

@SerializedName("WEBSITE")

String website;

@SerializedName("CALLBACK_URL")

String callBackUrl;

@SerializedName("INDUSTRY_TYPE_ID")

String industryTypeId;

public Paytm(String mId, String channelId, String txnAmount, String website, String callBackUrl, String industryTypeId) {

this.mId = mId;

this.orderId = generateString();

this.custId = generateString();

this.channelId = channelId;

this.txnAmount = txnAmount;

this.website = website;

this.callBackUrl = callBackUrl;

this.industryTypeId = industryTypeId;

Log.d("orderId", orderId);

Log.d("customerId", custId);

}

public String getmId() {

return mId;

}

public String getOrderId() {

return orderId;

}

public String getCustId() {

return custId;

}

public String getChannelId() {

return channelId;

}

public String getTxnAmount() {

return txnAmount;

}

public String getWebsite() {

return website;

}

public String getCallBackUrl() {

return callBackUrl;

}

public String getIndustryTypeId() {

return industryTypeId;

}

* The following method we are using to generate a random string everytime

* As we need a unique customer id and order id everytime

* For real scenario you can implement it with your own application logic

* */

private String generateString() {

String uuid = UUID.randomUUID().toString();

return uuid.replaceAll("-", "");

}

Creating Retrofit API Interface

Create a new interface named Api.java.

package simplifiedcoding.net.paytmpaymentsample;

import retrofit2.Call;

import retrofit2.http.Field;

import retrofit2.http.FormUrlEncoded;

import retrofit2.http.POST;

/**

* Created by Belal on 1/10/2018.

public interface Api {

//this is the URL of the paytm folder that we added in the server

//make sure you are using your ip else it will not work

String BASE_URL = "http://192.168.101.1/paytm/";

@FormUrlEncoded

@POST("generateChecksum.php")

Call<Checksum> getChecksum(

@Field("MID") String mId,

@Field("ORDER_ID") String orderId,

@Field("CUST_ID") String custId,

@Field("CHANNEL_ID") String channelId,

@Field("TXN_AMOUNT") String txnAmount,

@Field("WEBSITE") String website,

@Field("CALLBACK_URL") String callbackUrl,

@Field("INDUSTRY_TYPE_ID") String industryTypeId

);

}

If you don’t know anything about using Retrofit you better go through the Retrofit Tutorial first.
Now come to MainActivity.java and write the following code to complete our project.

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package simplifiedcoding.net.paytmpaymentsample;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.TextView;

import android.widget.Toast;

import com.paytm.pgsdk.PaytmOrder;

import com.paytm.pgsdk.PaytmPGService;

import com.paytm.pgsdk.PaytmPaymentTransactionCallback;

import java.util.HashMap;

import java.util.Map;

import retrofit2.Call;

import retrofit2.Callback;

import retrofit2.Response;

import retrofit2.Retrofit;

import retrofit2.converter.gson.GsonConverterFactory;

//implementing PaytmPaymentTransactionCallback to track the payment result.

public class MainActivity extends AppCompatActivity implements PaytmPaymentTransactionCallback {

//the textview in the interface where we have the price

TextView textViewPrice;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

//getting the textview

textViewPrice = findViewById(R.id.textViewPrice);

//attaching a click listener to the button buy

findViewById(R.id.buttonBuy).setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View view) {

//calling the method generateCheckSum() which will generate the paytm checksum for payment

generateCheckSum();

}

});

}

private void generateCheckSum() {

//getting the tax amount first.

String txnAmount = textViewPrice.getText().toString().trim();

//creating a retrofit object.

Retrofit retrofit = new Retrofit.Builder()

.baseUrl(Api.BASE_URL)

.addConverterFactory(GsonConverterFactory.create())

.build();

//creating the retrofit api service

Api apiService = retrofit.create(Api.class);

//creating paytm object

//containing all the values required

final Paytm paytm = new Paytm(

Constants.M_ID,

Constants.CHANNEL_ID,

txnAmount,

Constants.WEBSITE,

Constants.CALLBACK_URL,

Constants.INDUSTRY_TYPE_ID

);

//creating a call object from the apiService

Call<Checksum> call = apiService.getChecksum(

paytm.getmId(),

paytm.getOrderId(),

paytm.getCustId(),

paytm.getChannelId(),

paytm.getTxnAmount(),

paytm.getWebsite(),

paytm.getCallBackUrl(),

paytm.getIndustryTypeId()

);

//making the call to generate checksum

call.enqueue(new Callback<Checksum>() {

@Override

public void onResponse(Call<Checksum> call, Response<Checksum> response) {

//once we get the checksum we will initiailize the payment.

//the method is taking the checksum we got and the paytm object as the parameter

initializePaytmPayment(response.body().getChecksumHash(), paytm);

}

@Override

public void onFailure(Call<Checksum> call, Throwable t) {

}

});

}

private void initializePaytmPayment(String checksumHash, Paytm paytm) {

//getting paytm service

PaytmPGService Service = PaytmPGService.getStagingService();

//use this when using for production

//PaytmPGService Service = PaytmPGService.getProductionService();

//creating a hashmap and adding all the values required

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

paramMap.put("MID", Constants.M_ID);

paramMap.put("ORDER_ID", paytm.getOrderId());

paramMap.put("CUST_ID", paytm.getCustId());

paramMap.put("CHANNEL_ID", paytm.getChannelId());

paramMap.put("TXN_AMOUNT", paytm.getTxnAmount());

paramMap.put("WEBSITE", paytm.getWebsite());

paramMap.put("CALLBACK_URL", paytm.getCallBackUrl());

paramMap.put("CHECKSUMHASH", checksumHash);

paramMap.put("INDUSTRY_TYPE_ID", paytm.getIndustryTypeId());

//creating a paytm order object using the hashmap

PaytmOrder order = new PaytmOrder(paramMap);

//intializing the paytm service

Service.initialize(order, null);

//finally starting the payment transaction

Service.startPaymentTransaction(this, true, true, this);

}

//all these overriden method is to detect the payment result accordingly

@Override

public void onTransactionResponse(Bundle bundle) {

Toast.makeText(this, bundle.toString(), Toast.LENGTH_LONG).show();

}

@Override

public void networkNotAvailable() {

Toast.makeText(this, "Network error", Toast.LENGTH_LONG).show();

}

@Override

public void clientAuthenticationFailed(String s) {

Toast.makeText(this, s, Toast.LENGTH_LONG).show();

}

@Override

public void someUIErrorOccurred(String s) {

Toast.makeText(this, s, Toast.LENGTH_LONG).show();

}

@Override

public void onErrorLoadingWebPage(int i, String s, String s1) {

Toast.makeText(this, s, Toast.LENGTH_LONG).show();

}

@Override

public void onBackPressedCancelTransaction() {

Toast.makeText(this, "Back Pressed", Toast.LENGTH_LONG).show();

}

@Override

public void onTransactionCancel(String s, Bundle bundle) {

Toast.makeText(this, s + bundle.toString(), Toast.LENGTH_LONG).show();

}

Now you can try running your application.

Bingo! it is working fine.

Paytm Integration in Android Example – Source Code

If you are having some problem following this example, then you get my source code from my GitHub Repository. The link is given below.

So that’s all for this Paytm Integration in Android Example friends. I hope you found it useful if you did, please SHARE it with your friends.
And if you are having any query regarding this Paytm Integration in Android Example then don’t hesitate in commenting. Thank You 🙂

Belal Khan

Hi, my name is Belal Khan and I am a Google Developers Expert (GDE) for Android. The passion of teaching made me create this blog. If you are an Android Developer, or you are learning about Android Development, then I can help you a lot with Simplified Coding.

Checkout these tutorials as well:

66 thoughts on “Paytm Integration in Android Example – Accepting Payments with Paytm”

Abdul Khaliq
January 11, 2018 at 12:49 pm
This is the very simple and good.
Reply
- Ankit varshney
  March 30, 2018 at 5:26 am
  After signing sandbox credential, how i get merchant key???
  Reply
vinayak Revankar
January 13, 2018 at 5:12 pm
Hi,
i’m not able to see Sandbox Credential help me out
Reply
Rishab Mehrotra
January 17, 2018 at 10:27 am
followed each of the above mentioned steps but in the payment gateway its says transaction to be made x amount
but as u displayed the part where login/signup for paytm wallet come for payment transaction is not appearing to complete the transaction
Reply
- Belal Khan
  January 19, 2018 at 6:37 am
  Did you check the video tutorial as well?
  Reply
Saurabh Bhatt
January 22, 2018 at 5:29 am
Hey Belal,
How here create a class for Server called that as API,how coonect it with Firebase instead of local server.
Reply
- Jay Patel
  November 3, 2018 at 7:14 am
  Bruh, Its not possible to generate the Checksum from Firebase Hosting as it is used for static purposes only.. Try using it in local server, then use that php file to upload it on the live server as hosting..
  Reply
- Jay Patel
  November 3, 2018 at 6:09 pm
  You cannot use Firebase hosting for checksum generation as it is only used for static purposes. Try generating the checksum on a local server and do check that on a HTTP request client for verifying your checksum. Then copy the file to a live server.
  Reply
Neha Kulkarni
January 25, 2018 at 9:41 am
Hey Belal,
What value should be for WEBSITE variable. As I am implementing this in app, what could be the website?
I used your value for website but it is giving TimeoutError & unable to enqueue request.
please help
Thanks,
Reply
Abdul Khaliq
February 5, 2018 at 7:37 am
This exception occurred as give below while click BUY button is there any solution?
occurred
Reply
Abdul Khaliq
February 5, 2018 at 7:39 am
com.google.gson.stream.MalformedJsonException: Use JsonReader.setLenient(true) to accept malformed JSON at line 1 column 1 path $
Reply
Vinod Patil
February 12, 2018 at 9:20 pm
getting following error when i launch app – android.view.InflateException: Binary XML file line #0: Binary XML file line #0: Error inflating class ImageView
Reply
- Akash Agrawal
  January 24, 2019 at 9:34 am
  reduce your image size or handle it by any third party library
  Reply
braja
February 15, 2018 at 5:13 am
it prompts me total payment to be made to xxxxx rs 10 transaction id xxxxxx .but there is no dialogue checking for login as yours
Reply
braja
February 15, 2018 at 6:21 am
what is your CHANNEL_ID wap or web i had also same problem .mine was WAP but i was sending WEB in Constant class .make this change . it will work as expected
Reply
Ankesh kumar
February 16, 2018 at 7:42 am
which app url a need to submit at Generate Sandbox Credentials
Reply
- Vishal
  March 13, 2018 at 9:45 am
  Pass app url=package name..
  company name=anything
  Reply
pawan soni
February 19, 2018 at 1:06 pm
Hi Bilal !! I am using tomcat server with java. so how can I use the kit with java web service.
Reply
- Suresh
  January 23, 2019 at 7:16 pm
  Try use this checksum kit https://github.com/Paytm-Payments/Paytm_App_Checksum_Kit_JAVA
  Reply
Vikas Kumar
February 27, 2018 at 9:04 am
Hello Bilal,
I have done everything as same as you did. It is not working, When I am debugging the code it is onFailure of “call.enqueue” in the generateChecksum method.
Not able to find why it is not going to success callback.
Reply
Ravi Bhosle
February 27, 2018 at 11:20 am
Am getting this error
“com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected BEGIN_OBJECT but was STRING at line 1 column 1 path $ ‘
I am using PHP kit for checksum with tomcat sever.
my retrofit service call to getnerateChecksum.php function goes in onFailure() and gives above error
REPLY
Reply
Milan chhatralia
March 3, 2018 at 2:15 pm
An issue in creating the sandbox credentials, please help with this.
Reply
Senthil
March 6, 2018 at 11:09 am
Hello Bilal,
I am also getting same error above
“com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected BEGIN_OBJECT but was STRING at line 1 column 1 path $ ‘
I am using PHP kit for checksum with tomcat sever.
my retrofit service call to getnerateChecksum.php function goes in onFailure() and gives above error
I was unable to move forward because of this issue.
Please reply…
Reply
Huda Khan
March 7, 2018 at 8:02 am
Good Afternoon , I have seen your video tutorial and took help from this post as well but there is an error when I compiled , after debugging I observe that after passing all the details onResponse() method is being skipped thus the app crashes .
Help me to recover the error. Reply me with the improvisations.
Thank You.
Reply
HARIHARAN
March 19, 2018 at 6:29 pm
is that the money is sent to any bank account?
bcoz i want to create a wallet like application for my academic project in that i have to add money through paytm gateway so kindly help me with this issue
Reply
Rainy
March 21, 2018 at 12:26 pm
HI,
I followed each and every steps .
Everything just work fine.
Only call back doesn’t work.
Thanks
Reply
Rainy
March 22, 2018 at 6:37 am
Hello Belal,
I checked this post, it is very useful… This is the best i found so far for paytm intergration.
I have a query , i dont want to create sandbox credentials, i want to create live app.
For this also, backend is required?
Where should i set merchant key?
Reply
Aniket
March 29, 2018 at 4:27 am
I get this error after running above code. Please give me solution.
java.net.SocketTimeoutException: failed to connect to /192.168.5.137 (port 80) after 10000ms
Reply
- Preethi
  June 14, 2018 at 4:42 pm
  Is this error resolved? I am also facing same error. Please let me how did you resolve.
  Reply
Darshan Khatri
April 3, 2018 at 6:26 am
Hello there,
For live Merchant id
Callback url,Website should be same Like yours of Different ??
Help plz
Reply
neena
April 3, 2018 at 7:28 am
on button click the generate checksum is not working and the IP address is also not accesable in the browser
Reply
Seminal
April 6, 2018 at 5:13 am
Hi, thank you
I followed every step and implemented successfully.
I’m facing an issue after a successful transaction, I’m calling Transaction status API provided by paytm. But getting Internal processing error. please help
class ConfirmTransactionStatus extends AsyncTask {
@Override
protected String doInBackground(String… params) {
String url =”https://pguat.paytm.com/oltp/HANDLER_INTERNAL/getTxnStatus?JsonData=”;
JSONParser jsonParser = new JSONParser(MainActivity.this);
/*String param;
param=”MID=” + MID+
“&ORDERID=”+ORDERID;*/
Map paramMap = new HashMap();
paramMap.put(“MID”, MID);
paramMap.put(“ORDERID”, ORDERID);
paramMap.put(“CHECKSUMHASH”,CHECKSUMHASH);
JSONObject jsonObject = jsonParser.makeHttpRequest(url,”POST”,paramMap.toString());
Log.e(“CheckSum result >>”,jsonObject.toString());
if(jsonObject != null){
Log.d(“CheckSum result >>”,jsonObject.toString());
try {
CHECKSUMHASH=jsonObject.has(“CHECKSUMHASH”)?jsonObject.getString(“CHECKSUMHASH”):””;
Log.e(“CheckSum result >>”,CHECKSUMHASH);
} catch (JSONException e) {
e.printStackTrace();
}
}
return null;
}
Reply
- harish kumar
  July 16, 2018 at 7:18 pm
  how is this possible bro while paytm sdk is not avialable on github how you can implement by following this step
  Reply
Shikhar Singh Chauhan
April 12, 2018 at 8:56 pm
This example is for accepting the payment from paytm . But what if i want to pay the user who are using my app. how can i implement this thing reply and give solution as soon as possible.Thanks in advance 🙂
Reply
Navin
April 18, 2018 at 4:10 am
I am downloaded your enter source code and added my MID & credential buy is also working but after payment callback is not getting & get “opps” page when i contacted with paytm tech team say “You are missing checksumhash and callback url parameters in checksum generation file. It is mandatory all the parameters in checksum generation file and main activity.java file are same”.
So can you please fix this and send me updated checksum generation file & main activity.java file.?
Reply
Karthikeyan
May 11, 2018 at 11:17 am
Thanks bro !!! It worked great!!!
PS: Use PHP version 5.x version. Don’t use PHP 7.x since the server-side utilities given by paytm uses php_mcrypt.dll which is deprecated in 7.x.
Reply
Hansen D'Silva
June 1, 2018 at 6:27 pm
Hi there,
I really enjoy your videos which has helped me a lot too.
About the integration, after clicking on buy (proceeding to payment), the page redirects to Paytm but the page – You are lost in space.
What could be the reason for it. The order is registered. Is it the callback URL?
Reply
Rohini
June 13, 2018 at 12:36 pm
this code doesn’t work for me .
It doesn’t give any response on button click .Checksum is generated from server but it doesn’t receive it and not console the checksum value on checksum.java file. So can u help me out.
Reply
Mehul Parmar
June 19, 2018 at 5:34 am
hey bro, i have a problem during sdk integration in android , so basically i have a problem while using localhost in generateChecksum.php file it said that getblock size () error what should i do??
Reply
him
July 3, 2018 at 11:15 am
I have downloaded your source code but its not working . On click of buy button it is showing “java.net.SocketTimeoutException” this exception .Retrofit call is going on onFailure .
Could you please help .
P.s: I have also added my merchant id and channel id .
Reply
shantanu jaiswal
July 30, 2018 at 7:43 am
van anyone tell me how to get PGSDK_V2.1.jar file with the help of paytm SDK line
Reply
- Shyam Gosavi
  August 22, 2018 at 12:42 am
  Hello Shantanu
  Please use following url to download PGSDK_V2.1.jar
  https://github.com/Sameer-Jani-201/PayTMDemo/tree/master/app/libs
  Suppose I don’t have server then where should I add that PHP file
  Reply
- Amit Zala
  August 24, 2018 at 6:03 am
  hi please open this link and go to the src/app/libs you will get jar file of paytm sdk
  https://github.com/Sameer-Jani-201/PayTMDemo
  Reply
Sanjana Potnuri
August 7, 2018 at 4:16 pm
Hi, i followed your tutorialsteps….i am able to login …but showing insufficienr balance …even i have balance
Reply
haraxy
August 26, 2018 at 6:55 pm
you have done with PHP with Xampp Server. i want to implement same thing with firebase. so How can i implement this? also how to add Paytm Checksum Kit file in my Firebase server?
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- Belal Khan
  August 30, 2018 at 7:36 am
  If paytm provides javascript sdk then we can do it. Check there docs?
  Reply
  - avinash kumar ravi
    September 18, 2018 at 6:58 am
    hello sir i want make a application that user can get money from merchant account . please provide api details of paytm . please
    Reply
Md Naseem
August 29, 2018 at 3:07 am
everything is working fine but i’m not getting the payment page means no error nothing …………. generatechecksum working fine then why i’m not getting the payment page plzzz help me out
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ravi rocky
September 5, 2018 at 11:21 am
hello sir nice tut but i am unable another page even i cannot find any error logcat hope you will get me out !!!!!!
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Naksh
September 8, 2018 at 4:10 am
How can i contact you …
Want to know the charges…
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jam patel
September 12, 2018 at 3:09 pm
sir my project is done in xampp server and if i click my registered mobile no for payment so there is error is occured as says you are not registered and if i click on terms and condition so it says you are lost in space.
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Ayesha
September 15, 2018 at 10:56 am
My App crashes while running …Can you Please reply me that whats the problem ??
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Nilesh Dhawale
October 1, 2018 at 11:58 am
I want to pay my user, so if user request to pay, amount will get debited form my paytm wallet and get added to users paytm wallet, can you please suggest or guide me any link or sample code for this.
Thanks in advacne
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Anshuman Parashar
October 4, 2018 at 4:18 pm
This way of paytm integration is no longer in use now. Paytm has removed addition of pgsdk.jar file in the whole procedure. Can you please update this blog with the new method and let me know what exactly I have to do. Please help me out.
Reply
Libin
October 9, 2018 at 7:55 am
While trying your code i am getting following error…
“You are lost in space”. How to solve this error?
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Richa
October 11, 2018 at 1:43 pm
Paytm sdk page is not open in my app why?
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shankarvannala
November 12, 2018 at 1:09 pm
1) PaymentOrder order = new PaymentOrder(paramMap); (paramMap) error shows in Android studio .
2) After i added PaymentOrder order = new PaymentOrder((HashMap) paramMap);
I’m getting a force close when clicked on buy button, logcat message :
Nullpointerexception : Attempt to invoke virtual method ‘java.lang.String’ my packagename.Checksum.getChecksumHash() on a null object reference
Reply
shankarvannala
November 12, 2018 at 1:11 pm
1) PaymentOrder order = new PaymentOrder(paramMap); (paramMap) error shows in Android studio .
2) After i added PaymentOrder order = new PaymentOrder((HashMap paramMap);
I’m getting a force close when clicked on buy button, logcat message :
Nullpointerexception : Attempt to invoke virtual method ‘java.lang.String’ my packagename.Checksum.getChecksumHash() on a null object reference
Reply
Tony
November 27, 2018 at 9:13 am
bro i completely all the step and when i login to paytm using otp and mobile number it’s so 0 balance in my account
plz help me bro
Reply
Priyal
December 20, 2018 at 8:02 am
I tried this code but i’m getting page not found error on button click please help me out
Reply
raja
December 25, 2018 at 5:26 pm
I followed your tutorial, when i entered paytm gateway integration, it couldn’t work. the error message display 404 not found on my app. Help me
Reply
Rohit bhardwaj
March 13, 2019 at 8:58 am
please share your github link to integrete it
Reply
patel krutika
April 13, 2019 at 6:45 am
hello,
I have tried the same example demo in my android application, but on button click im getting 404 not found error page. Please give me the solution.
Reply
Rucha Kale
July 31, 2019 at 5:07 am
Hello,
I have done as per the steps mentioned in above tutorial but on button “Buy” click, I am getting 404 Not Found (nginx/1.6.2) error. Can you please help me with what is wrong here?
Reply
Sanjay Sharma
November 11, 2020 at 12:10 pm
Map paramMap = new HashMap()
HashMap paramMap = new HashMap()
Reply
maij shaikh
November 26, 2022 at 7:06 am
is it i need to whitelist my ip address to integrate live production details
Reply

Getting Credentials from Paytm

How to Integrate Paytm Payment into Android Application?

Paytm Integration in Android Example

Configuring the Paytm Checksum Kit

Integrating Paytm Payment in Android Project

Creating a New Project

Adding Paytm SDK

Adding Permissions and Paytm Activity

Adding Retrofit and Gson

Defining Constants

Creating User Interface

Creating Retrofit Models and Interface

Creating Models

Creating Retrofit API Interface

Paytm Integration in Android Example – Source Code

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