1. SDK Integration

Before you start with the integration, enable the payment methods that you want to offer to your customers from Dashboard > Settings > Payment methods. PayU enable Cards, UPI, and other payment methods by default, and we recommend that you enable other payment methods that are relevant to you. For more information, refer to Configure Checkout Payment Methods.

Step 1: Create a PayU account

First, create a PayU account. For more information, refer to Register for a Merchant Account.

Step 2: Set Up build.gradle

Add the following dependency in your application’s build.gradle:

implementation 'in.payu:payu-custom-browser:7.14.4'

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Watch Out!

If you are getting the following error: Default interface methods are only supported starting with Android N (--min-api 24): Landroidx/lifecycle/DefaultLifecycleObserver;onCreate(Landroidx/lifecycle/LifecycleOwner;)V

Add the following compileOptions on your app's build.gradle:

android {
 compileOptions {
        sourceCompatibility 1.8
        targetCompatibility 1.8
    }
    }

From version 7.4.0 onwards, it is mandatory to import UPI SDK dependency if you want to make payments through any of the following UPI options along with the changes mentioned in the Third-Party Payments Support section.

• UPI Intent
• Collect
• Google Pay
• PhonePe

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

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Tip

Merchants are advised to add this permission in the application’s AndroidManifest.xml to support OTP assist. In case your application supports a minimum SDK of less than 20, do these changes in your surl/furl.

Step 3: Check for Payment Availability

The CheckForPaymentAvailability function in CustomBrowser class. Checks for payment option type availability:

      Activity : activity instance
      PaymentOption : Payment Option type e.g.PaymentOption.SAMSUNGPAY,PaymentOption.PHONEPE
      PayUCustomBrowserCallback : this class provide callbacks 
      paymentOptionHash : Payment Related Details Hash
      merchantKey : PayU Merchant Key
      user_credentials : User credentials or use "default"

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Generate PaymentOption Hash

To generate PaymentOption Hash refer to Hash Generation.

Formula :-sha512(key|command|var1|salt)

where

key= Provide your merchant key here
command= "payment_related_details_for_mobile_sdk" // Api Commands
salt= Provide your merchant salt here
var1= Provide user credentials or use "default"

For more information, refer to Generate Static Hash.

Sample

new CustomBrowser().checkForPaymentAvailability(Activity activity, PaymentOption paymentOption, PayUCustomBrowserCallback payUCustomBrowserCallback, String paymentOptionHash, String merchantKey, String user_credentials)

Step 2: Invoke CustomBrowser

To invoke CustomBrowser:

Create a basic object of CustomBrowserConfig similar to the following code snippet. For more information on configurations supported, refer to Android CustomBrowser Configurations.

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Post URL can be any of the following:

Production - https://secure.payu.in/_payment
Staging - https://test.payu.in/_payment

CustomBrowserConfig customBrowserConfig = new CustomBrowserConfig(merchantKey,txnId);
customBrowserConfig.setPayuPostData(<Post Data>);
customBrowserConfig.setPostUrl(<Post Url>);

1. Create an object of PayUCustomBrowserCallback.
2. Call method addCustomBrowser() similar to the following code snippet:

Input:

• Activity: activity instance.
• CustomBrowserConfig: configuration object of the custom browser.
• PayUCustomBrowserCallback: this class provides callbacks.

Input:
    Activity : activity instance
    CustomBrowserConfig : configuration object of the custom browser
    PayUCustomBrowserCallback : this class provide callbacks

Sample

new CustomBrowser().addCustomBrowser( Activity activity, CustomBrowserConfig customBrowserConfig, PayUCustomBrowserCallback cbPayUCustomBrowserCallback)

Sample Post Request

Card

firstname=John&ccnum=5123456789012346&device_type=1&ccvv=123&ccexpyr=2025&key=gt****&[email protected]
&bankcode=CC&txnid=1705055037779&amount=1.0&udf5=udf5&ccexpmon=05&surl=https://cbjs.payu.in/sdk/success
 &udf3=udf3&udf4=udf4&udf1=udf1&udf2=udf2&sdk_platform=[{"name":"PayUCheckoutPro","platform":"android","version":"2.0.27"},{"platform":"android","name":"coresdk","version":"7.0.1"},
{"platform":"android","name":"pgsdk","version":"2.0.5"},{"platform":"android","name":"custombrowser","version":"7.11.14"}]
&phone=99999*****&pg=CC&furl=https://cbjs.payu.in/sdk/failure&productinfo=Macbook+Pro&ccname=PayuUser
&hash=a13d39d161c4377b4e81a97bc8b8bf06835628d208b379f3a15a4e352b88d1dc6fde878ff89e5c7d0eeb36f214d996313f4672432a92244c4950224a472c669b

Net Banking

amount=1.0&firstname=John&udf5=udf5&device_type=1&surl=https://cbjs.payu.in/sdk/success&udf3=udf3&
udf4=udf4&udf1=udf1&udf2=udf2&sdk_platform=[{"name":"PayUCheckoutPro","platform":"android","version":"2.0.27"},
{"platform":"android","name":"coresdk","version":"7.0.1"},{"platform":"android","name":"pgsdk","version":"2.0.5"},{"platform":"android","name":"custombrowser","version":"7.11.14"}]
&phone=99999*****&pg=NB&furl=https://cbjs.payu.in/sdk/failure&productinfo=Macbook+Pro&key=gt****&[email protected]
&hash=84d0fe7da879adb22429f2f4c33334c31ed164d819356b5f8842d4c207560cc4251c76b4211a476ca029ffd5581b6f760afe97c35c635d2eaa75d379619e6145
&bankcode=SBIB&txnid=1705055218155

For the supported payment method, refer to Supported Payment Methods.