flutter_bkash 0.2.0 
flutter_bkash: ^0.2.0 copied to clipboard
codeboxr.comFlutter package for payment gateway service bKash (Bangladesh). bKash payment easy to implement through this package on your flutter project.
import 'dart:developer' as dev;
import 'package:flutter/material.dart';
import 'package:flutter_bkash/flutter_bkash.dart';
void main() {
// it should be the first line in main method
WidgetsFlutterBinding.ensureInitialized();
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({super.key});
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
theme: ThemeData(
primarySwatch: Colors.pink,
visualDensity: VisualDensity.adaptivePlatformDensity,
),
debugShowCheckedModeBanner: false,
home: const HomePage(title: 'bKash Demo'),
);
}
}
/// paymentType: payWithAgreement, payWithoutAgreement, createAgreement
/// enum values: as per your requirement
enum PaymentType { payWithAgreement, payWithoutAgreement, createAgreement }
class HomePage extends StatefulWidget {
final String title;
const HomePage({Key? key, required this.title}) : super(key: key);
@override
HomePageState createState() => HomePageState();
}
class HomePageState extends State<HomePage> {
final GlobalKey<ScaffoldState> _scaffoldKey = GlobalKey<ScaffoldState>();
final TextEditingController _amountController = TextEditingController();
final TextEditingController _agreementIdController = TextEditingController();
bool isLoading = false;
PaymentType _paymentType = PaymentType.payWithoutAgreement;
@override
Widget build(BuildContext context) {
return Scaffold(
key: _scaffoldKey,
appBar: AppBar(title: Text(widget.title)),
body: Stack(
children: [
isLoading
? const Center(
child: CircularProgressIndicator(
color: Colors.pink,
),
)
: SingleChildScrollView(
padding: const EdgeInsets.all(40),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
if (_paymentType != PaymentType.createAgreement) ...[
const Text(
'Amount :',
style: TextStyle(fontWeight: FontWeight.bold),
),
const SizedBox(
height: 10,
),
TextFormField(
controller: _amountController,
decoration: const InputDecoration(
hintText: "1240",
contentPadding: EdgeInsets.symmetric(
horizontal: 10, vertical: 0),
border: OutlineInputBorder(
borderRadius:
BorderRadius.all(Radius.circular(5)),
borderSide: BorderSide(color: Colors.grey)),
focusedBorder: OutlineInputBorder(
borderSide:
BorderSide(color: Colors.pink, width: 2.0),
),
// hintText: reviewTitle,
),
keyboardType: TextInputType.number,
maxLines: 1,
minLines: 1,
),
if (_paymentType == PaymentType.payWithAgreement) ...[
const SizedBox(
height: 20,
),
const Text(
'AgreementID :',
style: TextStyle(fontWeight: FontWeight.bold),
),
const SizedBox(
height: 10,
),
TextFormField(
controller: _agreementIdController,
decoration: const InputDecoration(
hintText: "User Agreement Id",
contentPadding: EdgeInsets.symmetric(
horizontal: 10, vertical: 0),
border: OutlineInputBorder(
borderRadius:
BorderRadius.all(Radius.circular(5)),
borderSide: BorderSide(color: Colors.grey)),
focusedBorder: OutlineInputBorder(
borderSide:
BorderSide(color: Colors.pink, width: 2.0),
),
// hintText: reviewTitle,
),
keyboardType: TextInputType.text,
maxLines: 1,
minLines: 1,
),
],
const SizedBox(height: 20.0),
],
const Divider(),
ListTile(
title: const Text('Pay (without agreement)'),
leading: Radio(
value: PaymentType.payWithoutAgreement,
groupValue: _paymentType,
onChanged: (value) {
setState(() => _paymentType = value!);
},
),
dense: true,
),
ListTile(
title: const Text('Pay with Agreement'),
leading: Radio(
value: PaymentType.payWithAgreement,
groupValue: _paymentType,
onChanged: (value) {
setState(() => _paymentType = value!);
},
),
dense: true,
),
ListTile(
title: const Text('Create agreement'),
leading: Radio(
value: PaymentType.createAgreement,
groupValue: _paymentType,
onChanged: (value) {
setState(() => _paymentType = value!);
},
),
dense: true,
),
const Divider(),
Center(
child: TextButton(
style: TextButton.styleFrom(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(3.0),
),
backgroundColor: Colors.pink),
child: const Text(
"Checkout",
style: TextStyle(color: Colors.white),
),
onPressed: () async {
setState(() {
isLoading = true;
});
/// create an instance of FlutterBkash
final flutterBkash = FlutterBkash();
/// if the payment type is createAgreement
if (_paymentType == PaymentType.createAgreement) {
try {
// remove focus from TextField to hide keyboard
FocusManager.instance.primaryFocus?.unfocus();
/// call createAgreement method to create an agreement as parameter pass the context
final result = await flutterBkash
.createAgreement(context: context);
/// show the log
dev.log(result.toString());
/// show the snack-bar
_showSnackbar(
"(Success) AgreementId: ${result.agreementId}");
} on BkashFailure catch (e, st) {
/// if any error occurred then show the log
dev.log(e.message, error: e, stackTrace: st);
/// show the snack-bar
_showSnackbar(e.message);
} catch (e, st) {
/// if any error occurred then show the log
dev.log("Something went wrong",
error: e, stackTrace: st);
/// show the snack-bar
_showSnackbar("Something went wrong");
}
setState(() {
isLoading = false;
});
return;
}
/// if the payment type is payWithoutAgreement
if (_paymentType ==
PaymentType.payWithoutAgreement) {
final amount = _amountController.text.trim();
if (amount.isEmpty) {
// if the amount is empty then show the snack-bar
ScaffoldMessenger.of(context).showSnackBar(
const SnackBar(
content: Text(
"Amount is empty. Without amount you can't pay. Try again")));
setState(() {
isLoading = false;
});
return;
}
/// remove focus from TextField to hide keyboard
FocusManager.instance.primaryFocus?.unfocus();
/// Goto BkashPayment page & pass the params
try {
/// call pay method to pay without agreement as parameter pass the context, amount, merchantInvoiceNumber
final result = await flutterBkash.pay(
context: context,
// need the context as BuildContext
amount: double.parse(amount),
// need it double type
merchantInvoiceNumber: "tranId",
);
/// if the payment is success then show the log
dev.log(result.toString());
/// if the payment is success then show the snack-bar
_showSnackbar(
"(Success) tranId: ${result.trxId}");
} on BkashFailure catch (e, st) {
/// if something went wrong then show the log
dev.log(e.message, error: e, stackTrace: st);
/// if something went wrong then show the snack-bar
_showSnackbar(e.message);
} catch (e, st) {
/// if something went wrong then show the log
dev.log("Something went wrong",
error: e, stackTrace: st);
/// if something went wrong then show the snack-bar
_showSnackbar("Something went wrong");
}
setState(() {
isLoading = false;
});
return;
}
/// if the payment type is payWithAgreement
if (_paymentType == PaymentType.payWithAgreement) {
/// amount & agreementId is required
final amount = _amountController.text.trim();
final agreementId =
_agreementIdController.text.trim();
/// if the amount is empty then show the snack-bar
if (amount.isEmpty) {
// if the amount is empty then show the snack-bar
ScaffoldMessenger.of(context).showSnackBar(
const SnackBar(
content: Text(
"Amount is empty. Without amount you can't pay. Try again")));
setState(() {
isLoading = false;
});
return;
}
/// is the agreementId is empty then show the snack-bar
if (agreementId.isEmpty) {
// if the agreementId is empty then show the snack-bar
ScaffoldMessenger.of(context).showSnackBar(
const SnackBar(
content: Text(
"AgreementId is empty. Without AgreementId you can't pay. Try again")));
setState(() {
isLoading = false;
});
return;
}
/// remove focus from TextField to hide keyboard
FocusManager.instance.primaryFocus?.unfocus();
/// Goto BkashPayment page & pass the params
try {
/// call payWithAgreement method to pay with agreement as parameter pass the context, amount, agreementId, marchentInvoiceNumber
final result =
await flutterBkash.payWithAgreement(
context: context,
amount: double.parse(amount),
agreementId: agreementId,
marchentInvoiceNumber:
"merchantInvoiceNumber",
);
/// print the result
dev.log(result.toString());
/// show the snack-bar with success message
_showSnackbar(
"(Success) tranId: ${result.trxId}");
} on BkashFailure catch (e, st) {
/// print the error message & stackTrace
dev.log(e.message, error: e, stackTrace: st);
_showSnackbar(e.message);
} catch (e, st) {
/// print the error message & stackTrace
dev.log("Something went wrong",
error: e, stackTrace: st);
/// show the snack-bar with error message
_showSnackbar("Something went wrong");
}
setState(() {
isLoading = false;
});
return;
}
},
),
)
],
),
),
],
),
);
}
/// show snack-bar with message
void _showSnackbar(String message) => ScaffoldMessenger.of(context)
..hideCurrentSnackBar()
..showSnackBar(SnackBar(content: Text(message)));
}Metadata
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Publisher
Metadata
Flutter package for payment gateway service bKash (Bangladesh). bKash payment easy to implement through this package on your flutter project.
Repository (GitHub)
View/report issues
Documentation
License
BSD-3-Clause (license)
Dependencies
flutter, fpdart, http, webview_flutter
