Documented below are the methods for the Flutter plugin.

Interface Methods

getPaymentMethods

Use this method for fetching the payment methods:

onPressed: () {
   final paymentMethods = await _razorpay.getPaymentMethods();
}

getAppsWhichSupportUpi

Use this method for fetching those apps on the customer's phone which support UPI payments:

onPressed: () {
   final supportedUpiApps = _razorpay.getAppsWhichSupportUpi();
}

getCardNetwork

Use this method to get the card network. This function expects the card number as a parameter and returns the card network eg: VISA, Mastercard, RuPay and so on:

onPressed: () {
   final cardNetwork = _razorpay.getCardsNetwork("<card-number>");
}

isValidCardNumber

Use this method to validate the card number. This function returns a boolean value that determines the card is valid or invalid:

onPressed: () {
   final isValidCard = await _razorpay.isValidCardNumber('4111111111111111');
}

getBankLogoUrl

Use this method for fetching the bank logo URL. It needs bank code as a method parameter which is returned in the getPaymentMethod() call:

onPressed: () {
final bankLogoUrl = _razorpay.getBankLogoUrl("<bank-code>");
}

changeApiKey

Use this method for changing the API keys:

onPressed: () {
   _razorpay.changeApiKey(‘api-key’);
}

getCardNetworkLength

Use this method for fetching the card network length:

onPressed: () {
   final length = await _razorpay.getCardNetworkLenght('VISA');
}

getSubscriptionAmount

Use this method for fetching the subscription amount using the subscription_id:

onPressed: () {
   final subAmount = await _razorpay.getSubscriptionAmount('sub_8tkmbhhROdiVSc');
}

getWalletLogoUrl

Use this method for fetching the wallet logo URL:

onPressed: () {
   final walletLogo = await _razorpay.getWalletLogoUrl('paytm');
}

Submit

Use this method for submitting the payment details:

onPressed: () {
   var options = {
           'key': key,
           'amount': 100,
           'currency': 'INR',
           'email': 'gaurav.kumar@example.com',
           'contact': '9900990099',
           'method': 'netbanking',
           'bank': 'hdfc'
       };
   _razorpay.submit(options);
}

Listening to Events

Events are triggered from the SDK for handling success or error on payments, Register for these events in the initState() method in their flutter apps as given below:

@override
void initState() {
  _razorpay = Razorpay();
  _razorpay.initilizeSDK(key);
  _razorpay.on(Razorpay.EVENT_PAYMENT_SUCCESS, _handlePaymentSuccess);
  _razorpay.on(Razorpay.EVENT_PAYMENT_ERROR, _handlePaymentError);
}

void _handlePaymentSuccess(Map<dynamic, dynamic> response) {
  print('Payment Success Response : $response');
}

void _handlePaymentError(Map<dynamic, dynamic> response) {
  print('Payment Error Response : $response');
}

Error Codes

The error codes have been exposed as integers by the Razorpay class. The error code is available as the code field of the PaymentFailureResponse instance passed to the callback.

Error Code	Description
NETWORK_ERROR	There was a network error. For example, loss of internet connectivity.
INVALID_OPTIONS	An issue with options passed in `Razorpay.open` .
PAYMENT_CANCELLED	User cancelled the payment.
TLS_ERROR	Device does not support TLS v1.1 or TLS v1.2.
UNKNOWN_ERROR	An unknown error occurred.