1. Build Integration
Steps to integrate your Standard Flutter application with Razorpay Payment Gateway.
Follow these steps to integrate your Flutter application with the Razorpay Payment Gateway:
1.1
.1.2
.1.3
.1.4
.1.5
.1.6
.1.7
.1.8
.1.9
.1.10
.1.11
.Handy Tips
After you complete the integration:
- Set up webhooks
- Make test payments
- Replace Test API keys with Live API keys
- Integrate with other APIs
Refer to the .
Watch Out!
from Pub.dev.
Add the below code to dependencies
in your app's pubspec.yaml
razorpay_flutter: 1.3.3
If you are using Proguard for your builds, you need to add the following lines to the Proguard files:
-keepattributes *Annotation*-dontwarn com.razorpay.**-keep class com.razorpay.** {*;}-optimizations !method/inlining/-keepclasseswithmembers class * {public void onPayment*(...);}
Know more about
.Run flutter packages get
in the root directory of your app.
Minimum Version Requirement
- For Android, ensure that the minimum API level for your app is 19 or higher.
- For iOS, ensure that the minimum deployment target for your app is iOS 10.0 or higher. Also, don't forget to enable bitcode for your project.
Use the below code to import the razorpay_flutter.dart
file to your project.
import 'package:razorpay_flutter/razorpay_flutter.dart';
Use the below code to create a Razorpay instance.
_razorpay = Razorpay();
The plugin uses event-based communication and emits events when payments fail or succeed.
The event names are exposed via the constants EVENT_PAYMENT_SUCCESS
, EVENT_PAYMENT_ERROR
and EVENT_EXTERNAL_WALLET
from the Razorpay
class.
Use the on(String event, Function handler)
method on the Razorpay
instance to attach event listeners.
_razorpay.on(Razorpay.EVENT_PAYMENT_SUCCESS, _handlePaymentSuccess);_razorpay.on(Razorpay.EVENT_PAYMENT_ERROR, _handlePaymentError);_razorpay.on(Razorpay.EVENT_EXTERNAL_WALLET, _handleExternalWallet);
The handlers would be defined in the class as:
void _handlePaymentSuccess(PaymentSuccessResponse response) {// Do something when payment succeeds}void _handlePaymentError(PaymentFailureResponse response) {// Do something when payment fails}void _handleExternalWallet(ExternalWalletResponse response) {// Do something when an external wallet is selected}
To clear event listeners, use the clear
method on the Razorpay
instance.
_razorpay.clear(); // Removes all listeners
Order is an important step in the payment process.
- An order should be created for every payment.
- You can create an order using the . It is a server-side API call. Know how to Orders API.
- The
order_id
received in the response should be passed to the checkout. This ties the order with the payment and secures the request from being tampered.
Use this endpoint to create an order using the Orders API.
curl -X POST https://api.razorpay.com/v1/orders-U [YOUR_KEY_ID]:[YOUR_KEY_SECRET]-H 'content-type:application/json'-d '{"amount": 100,"currency": "MYR","receipt": "qwsaq1","partial_payment": true,"first_payment_min_amount": 230,"notes": {"key1": "value3","key2": "value2"}}'
amount
mandatory
integer
The amount to be paid by the customer in sen. For example, if the amount is MYR 500.00, enter 50000
.
currency
mandatory
string
The currency in which the payment should be made by the customer. Length must be of 3 characters.
receipt
optional
string
Your receipt id for this order should be passed here. Maximum length is 40 characters.
notes
optional
json object
Key-value pair that can be used to store additional information about the entity. Maximum 15 key-value pairs, 256 characters (maximum) each. For example, "note_key": "Beam me up Scotty”
.
partial_payment
optional
boolean
Indicates whether the customer can make a partial payment. Possible values:
true
: The customer can make partial payments.false
(default): The customer cannot make partial payments.
first_payment_min_amount
optional
integer
Minimum amount that must be paid by the customer as the first partial payment. For example, if an amount of MYR 7,000.00 is to be received from the customer in two installments of #1 - MYR 5,000.00, #2 - MYR 2,000.00 then you can set this value as 500000
. This parameter should be passed only if partial_payment
is true
.
Know more about
.Descriptions for the response parameters are present in the
parameters table.The error response parameters are available in the
.Pass the Checkout options. Ensure that you pass the order_id
that you received in the response of the previous step.
var options = {'key': '<YOUR_KEY_ID>','amount': 50000, // Amount is in sen. Default currency is MYR. Hence, 50000 refers to 50000 sen.'name': 'Acme Corp.','order_id': 'order_EMBFqjDHEEn80l', // Generate order_id using Orders API'description': 'Fine T-Shirt','timeout': 60, // in seconds'prefill': {'contact': '+60345675444','email': 'nur.aisyah@example.com'}};
You must pass these parameters in Checkout to initiate the payment.
key
mandatory
string
API Key ID generated from the Curlec Dashboard.
amount
mandatory
integer
The amount to be paid by the customer in sen. For example, if the amount is MYR 500.00, enter 50000
.
currency
mandatory
string
The currency in which the payment should be made by the customer. Length must be of 3 characters.
name
mandatory
string
Your Business/Enterprise name shown on the Checkout form. For example, Acme Corp.
description
optional
string
Description of the purchase item shown on the Checkout form. It should start with an alphanumeric character.
image
optional
string
Link to an image (usually your business logo) shown on the Checkout form. Can also be a base64 string if you are not loading the image from a network.
order_id
mandatory
string
Order ID generated via
prefill
object
You can prefill the following details at Checkout.
Boost Conversions and Minimise Drop-offs
- Autofill customer contact details, especially phone number to ease form completion. Include customer’s phone number in the
contact
parameter of the JSON request'sprefill
object. Format: +(country code)(phone number). Example: “contact": "+601113455567"). - This is not applicable if you do not collect customer contact details on your website before checkout, have Shopify stores or use any of the no-code apps.
name
optional
string
Cardholder's name to be pre-filled if customer is to make card payments on Checkout. For example, Siti Aisyah.
optional
string
Email address of the customer.
contact
optional
string
Phone number of the customer. The expected format of the phone number is + {country code}{phone number}
. If the country code is not specified, 60
will be used as the default value. This is particularly important while prefilling contact
of customers with phone numbers issued outside Malaysia. Examples:
- +14155552671 (a valid non-Malaysian number)
- +601113455567 (a valid Malaysian number).
If 1113455567 is entered without the country code,+60
is added to it as +601113455567.
method
optional
string
Pre-selection of the payment method for the customer. Will only work if contact
and email
are also pre-filled.
Possible value is card
.
notes
optional
object
Set of key-value pairs that can be used to store additional information about the payment. It can hold a maximum of 15 key-value pairs, each 256 characters long (maximum).
theme
object
Thematic options to modify the appearance of Checkout.
hide_topbar
optional
boolean
Used to display or hide the top bar on the Checkout form. This bar shows the selected payment method, phone number and gives the customer the option to navigate back to the start of the Checkout form. Possible values:
true
: Hides the top barfalse
(default): Displays the top bar.
color
optional
string
Enter your brand colour's HEX code to alter the text, payment method icons and CTA (call-to-action) button colour of the Checkout form.
backdrop_color
optional
string
Enter a HEX code to change the Checkout's backdrop colour.
modal
object
Options to handle the Checkout modal.
backdropclose
optional
boolean
Indicates whether clicking the translucent blank space outside the Checkout form should close the form. Possible values:
true
: Closes the form when your customer clicks outside the checkout form.false
(default): Does not close the form when customer clicks outside the checkout form.
escape
optional
boolean
Indicates whether pressing the escape key should close the Checkout form. Possible values:
true
(default): Closes the form when the customer presses the escape key.false
: Does not close the form when the customer presses the escape key.
handleback
optional
boolean
Determines whether Checkout must behave similar to the browser when back button is pressed. Possible values:
true
(default): Checkout behaves similarly to the browser. That is, when the browser's back button is pressed, the Checkout also simulates a back press. This happens as long as the Checkout modal is open.false
: Checkout does not simulate a back press when browser's back button is pressed.
confirm_close
optional
boolean
Determines whether a confirmation dialog box should be shown if customers attempts to close Checkout. Possible values:
true
: Confirmation dialog box is shown.false
(default): Confirmation dialog box is not shown.
ondismiss
optional
function
Used to track the status of Checkout. You can pass a modal object with ondismiss: function()\{\}
as options. This function is called when the modal is closed by the user.
animation
optional
boolean
Shows an animation before loading of Checkout. Possible values:
true
(default): Animation appears.false
: Animation does not appear.
subscription_id
optional
string
If you are accepting recurring payments using Curlec Checkout, you should pass the relevant subscription_id
to the Checkout. Know more about
subscription_card_change
optional
boolean
Permit or restrict customer from changing the card linked to the subscription. You can also do this from the
true
: Allow the customer to change the card from Checkout.false
(default): Do not allow the customer to change the card from Checkout.
callback_url
optional
string
Customers will be redirected to this URL on successful payment. Ensure that the domain of the Callback URL is allowlisted. This parameter is mandatory for FPX payments.
redirect
optional
boolean
Determines whether to post a response to the event handler post payment completion or redirect to Callback URL. callback_url
and redirect
parameters are mandatory for FPX payments. Possible values:
true
: Customer is redirected to the specified callback URL in case of payment failure. For FPX payments, theredirect
parameter should always be sent astrue
.false
(default): Customer is shown the Checkout popup to retry the payment.
customer_id
optional
string
Unique identifier of customer.
remember_customer
optional
boolean
Determines whether to allow saving of cards. Can also be configured via the
true
: Enables card saving feature.false
(default): Disables card saving feature.
timeout
optional
integer
Sets a timeout on Checkout, in seconds. After the specified time limit, the customer will not be able to use Checkout.
readonly
object
Marks fields as read-only.
contact
optional
boolean
Used to set the contact
field as readonly. Possible values:
true
: Customer will not be able to edit this field.false
(default): Customer will be able to edit this field.
optional
boolean
Used to set the email
field as readonly. Possible values:
true
: Customer will not be able to edit this field.false
(default): Customer will be able to edit this field.
name
optional
boolean
Used to set the name
field as readonly. Possible values:
true
: Customer will not be able to edit this field.false
(default): Customer will be able to edit this field.
hidden
object
Hides the contact details.
contact
optional
boolean
Used to set the contact
field as optional. Possible values:
true
: Customer will not be able to view this field.false
(default): Customer will be able to view this field.
optional
boolean
Used to set the email
field as optional. Possible values:
true
: Customer will not be able to view this field.false
(default): Customer will be able to view this field.
allow_rotation
optional
boolean
Used to rotate payment page as per screen orientation. Applicable from Android SDK version 1.6.4 and above. Possible values:
true
: Payment page can be rotated.false
(default): Payment page cannot be rotated.
config
optional
object
Parameters that enable configuration of checkout display language.
display
object
Child parameter that enables configuration of checkout display language.
language
string
The language in which checkout should be displayed. Possible value is en
: English.
Use the below code to open the Razorpay checkout.
_razorpay.open(options);
A successful payment returns the following fields to the Checkout form.
- You need to store these fields in your server.
- You can confirm the authenticity of these details by verifying the signature in the next step.
razorpay_payment_id
string
Unique identifier for the payment returned by Checkout only for successful payments.
razorpay_order_id
string
Unique identifier for the order returned by Checkout.
razorpay_signature
string
Signature returned by the Checkout. This is used to verify the payment.
This is a mandatory step to confirm the authenticity of the details returned to the Checkout form for successful payments.
To verify the razorpay_signature
returned to you by the Checkout form:
-
Create a signature in your server using the following attributes:
order_id
: Retrieve theorder_id
from your server. Do not use therazorpay_order_id
returned by Checkout.razorpay_payment_id
: Returned by Checkout.key_secret
: Available in your server. Thekey_secret
that was generated from the .
-
Use the SHA256 algorithm, the
razorpay_payment_id
and theorder_id
to construct a HMAC hex digest as shown below:generated_signature = hmac_sha256(order_id + "|" + razorpay_payment_id, secret);if (generated_signature == razorpay_signature) {payment is successful} -
If the signature you generate on your server matches the
razorpay_signature
returned to you by the Checkout form, the payment received is from an authentic source.
Given below is the sample code for payment signature verification:
RazorpayClient razorpay = new RazorpayClient("[YOUR_KEY_ID]", "[YOUR_KEY_SECRET]");String secret = "EnLs21M47BllR3X8PSFtjtbd";JSONObject options = new JSONObject();options.put("razorpay_order_id", "order_IEIaMR65cu6nz3");options.put("razorpay_payment_id", "pay_IH4NVgf4Dreq1l");options.put("razorpay_signature", "0d4e745a1838664ad6c9c9902212a32d627d68e917290b0ad5f08ff4561bc50f");boolean status = Utils.verifyPaymentSignature(options, secret);
After you have completed the integration, you can
, make test payments, replace the test key with the live key and integrate with other .If you use M1 MacBook, you need to make the following changes in your podfile.
Handy Tips
Add the following code inside post_install do |installer|
.
installer.pods_project.build_configurations.each do |config|config.build_settings["EXCLUDED_ARCHS[sdk=iphonesimulator*]"] = "arm64"end
Handy Tips
On the Dashboard, ensure that the payment status is captured
. Refer to the payment capture settings page to know how to
You can track the payment status in three ways:
To verify the payment status from the Dashboard:
- Log in to the and navigate to Transactions → Payments.
- Check if a Payment Id has been generated and note the status. In case of a successful payment, the status is marked as Captured.
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