Easy bKash integration with Flutter

A simple implementation of bKash payment gateway in flutter with tokenized checkout feature.

Features

• A Simple App with a button to Checkout
• Pressing the button initiates bKash payment dialogs
• Returns a success message with tranId if payment is successful

Usage

Official link for API documentation and demo checkout

• bKash API Specifications
• bKash Payment Checkout Demo

Production

Replace the credentials for production uses in app_constants.dart with your own bKash credentials and change the flag isProduction = true.

  static const String username = 'app_username';
  static const String password = 'app_password';
  static const String appKey = 'app_key';
  static const String appSecret = 'app_secret';

Pay With bKash

Basically this the implementation of payment without an agreement. Use the makePayment method to pay

Request

final result = await makePayment(
    amount: '50.0',
    payerReference: '01770618575',
    merchantInvoiceNumber: 'invoice02',
  );

Response

{
    "trxId": "BBE40GR28Q",
    "paymentId": "TR0011QoLvETc1707888323866",
    "executeTime": "2024-02-14T11:25:40:749",
    "payerReference": "01770618575",
    "customerMsisdn": "01770618575",
    "merchantInvoiceNumber": "invoice02"
}

Error Handling

In case of any error it's throw PaymentException. You can handle the exception using a try-catch block.

try {
  // Make a payment
} on PaymentException catch (e) {
  // Handle the error
  log(e.message);
}

Video Demo

bkash_demo.mp4

Contributing

Contributions to this project you always are welcome. Please note the standard guidelines before submitting your pull request.