payu_upi_flutter 1.0.0 
payu_upi_flutter: ^1.0.0 copied to clipboard
The PayU UPI SDK Flutter provides a complete Solution for the Flutter App. This will support both iOS and Android.
example/lib/main.dart
// ignore_for_file: use_build_context_synchronously
import 'dart:convert';
import 'package:crypto/crypto.dart';
import 'package:flutter/material.dart';
import 'package:payu_upi_flutter/PayUUPIConstantKeys.dart';
import 'package:payu_upi_flutter/payu_upi_flutter.dart';
void main() {
runApp(const MaterialApp(home: MyApp()));
}
class MyApp extends StatefulWidget {
const MyApp({super.key});
@override
State<MyApp> createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> implements PayUUPIProtocol {
late PayUUpiFlutter payUUpiFlutter;
TextEditingController keyTextField = TextEditingController(text:"smsplus");
TextEditingController saltTextField = TextEditingController(text:"1b1b0");
TextEditingController vpaTextField = TextEditingController(text:"anything@payu");
TextEditingController userCredentialTextField = TextEditingController(text:"umang:arya");
TextEditingController accountNumberTextField = TextEditingController(text:"123456789012345");
TextEditingController accountIFSCTextField = TextEditingController(text:"IFSC1234");
@override
void initState() {
super.initState();
payUUpiFlutter = PayUUpiFlutter(this);
PayUTestCredentials.merchantKey = keyTextField.text;
PayUTestCredentials.merchantSalt = saltTextField.text;
PayUTestCredentials.vpa = vpaTextField.text;
PayUTestCredentials.userCredential = userCredentialTextField.text;
PayUTestCredentials.accountNumber = accountNumberTextField.text;
PayUTestCredentials.accountIFSC = accountIFSCTextField.text;
}
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: const Text('UPI Plugin example app'),
),
body: Center(
child: Container(
margin: const EdgeInsets.only(left: 20.0, right: 20.0),
child: ListView(
children: <Widget>[
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Flexible(
child: Container(
margin: const EdgeInsets.only(
top: 10.0, bottom: 10.0),
height: 50,
child: TextField(
controller: accountNumberTextField,
decoration: const InputDecoration(
labelText: 'account number ',
contentPadding: EdgeInsets.all(8),
border: OutlineInputBorder(),
),
style: Theme.of(context).textTheme.bodyText1,
onChanged: (content) {
PayUTestCredentials.accountNumber =
accountNumberTextField.text;
print("PayU flutterhash " +
PayUTestCredentials.merchantKey);
},
),
),
),
],
),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Flexible(
child: Container(
margin: const EdgeInsets.only(
top: 10.0, bottom: 10.0),
height: 50,
child: TextField(
controller: accountIFSCTextField,
decoration: const InputDecoration(
labelText: 'account IFSC ',
contentPadding: EdgeInsets.all(8),
border: OutlineInputBorder(),
),
style: Theme.of(context).textTheme.bodyText1,
onChanged: (content) {
PayUTestCredentials.accountIFSC =
accountIFSCTextField.text;
print("PayU flutterhash " +
PayUTestCredentials.merchantKey);
},
),
),
),
],
),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Flexible(
child: Container(
margin: const EdgeInsets.only(
top: 10.0, bottom: 10.0),
height: 50,
child: TextField(
controller: userCredentialTextField,
decoration: const InputDecoration(
labelText: 'User Credential ',
contentPadding: EdgeInsets.all(8),
border: OutlineInputBorder(),
),
style: Theme.of(context).textTheme.bodyText1,
onChanged: (content) {
PayUTestCredentials.userCredential =
userCredentialTextField.text;
print("PayU flutterhash " +
PayUTestCredentials.merchantKey);
},
),
),
),
],
),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Flexible(
child: Container(
margin: const EdgeInsets.only(
top: 10.0, bottom: 10.0),
height: 50,
child: TextField(
controller: keyTextField,
decoration: const InputDecoration(
labelText: 'Key ',
contentPadding: EdgeInsets.all(8),
border: OutlineInputBorder(),
),
style: Theme.of(context).textTheme.bodyText1,
onChanged: (content) {
PayUTestCredentials.merchantKey =
keyTextField.text;
print("PayU flutterhash " +
PayUTestCredentials.merchantKey);
},
),
),
),
],
),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Flexible(
child: Container(
margin: const EdgeInsets.only(
top: 10.0, bottom: 10.0),
height: 50,
child: TextField(
controller: saltTextField,
decoration: const InputDecoration(
labelText: 'Salt ',
contentPadding: EdgeInsets.all(8),
border: OutlineInputBorder(),
),
style: Theme.of(context).textTheme.bodyText1,
onChanged: (content) {
PayUTestCredentials.merchantSalt =
saltTextField.text;
},
),
),
),
],
),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Flexible(
child: Container(
margin: const EdgeInsets.only(
top: 10.0, bottom: 10.0),
height: 50,
child: TextField(
controller: vpaTextField,
decoration: const InputDecoration(
labelText: 'VPA ',
contentPadding: EdgeInsets.all(8),
border: OutlineInputBorder(),
),
style: Theme.of(context).textTheme.bodyText1,
onChanged: (content) {
PayUTestCredentials.vpa = vpaTextField.text;
},
),
),
),
],
),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
ElevatedButton(
child: const Text("Validate VPA"),
onPressed: () {
validateVPA();
},
),
],
),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
ElevatedButton(
child: const Text("PayU - UPI Intent"),
onPressed: () {
payViaUPIIntent();
},
),
],
),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
ElevatedButton(
child: const Text("UPI Intent TPV(Specific App)"),
onPressed: () {
payWithSpecificApp();
},
),
],
),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
ElevatedButton(
child: const Text("PayU - UPI Intent TPV"),
onPressed: () {
payIntentTPV();
},
),
],
),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
ElevatedButton(
child: const Text("Pay - Collect"),
onPressed: () {
payViaUPICollect();
},
),
],
),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
ElevatedButton(
child: const Text("Smart Intent Apps"),
onPressed: () {
intentApps();
},
),
],
),
]))),
),
);
}
showAlertDialog(BuildContext context, String title, String content) {
Widget okButton = TextButton(
child: const Text("OK"),
onPressed: () {
Navigator.pop(context);
},
);
showDialog(
context: context,
builder: (BuildContext context) {
return AlertDialog(
title: Text(title),
content: SingleChildScrollView(
scrollDirection: Axis.vertical,
child: new Text(content),
),
actions: [okButton],
);
});
}
validateVPA() async {
// ignore: prefer_interpolation_to_compose_strings
var vpaHash = HashService.calculateHash(PayUTestCredentials.merchantKey +
'|' +
"validateVPA" +
'|' +
PayUTestCredentials.vpa +
'|' +
PayUTestCredentials.merchantSalt);
var params = PayUParams.createPayUPaymentParams(PayUPaymentModeKeys.upi);
params[PayUPaymentParamKey.vpa] = PayUTestCredentials.vpa;
params[PayUPaymentParamKey.hashes] = {
PayUPaymentParamKey.validate_vpa: vpaHash
};
var data = await payUUpiFlutter.validateVPA(params: params);
showAlertDialog(context, "Validate VPA", "$data");
}
payIntentTPV() async {
var params = PayUParams.createPayUPaymentParamsForTPV();
params[PayUPaymentParamKey.intent_app] = PayUTestCredentials.paytmScheme;
payUUpiFlutter.makeUPIPayment(params: params);
}
payViaUPIIntent() async {
var params = PayUParams.createPayUPaymentParams(PayUPaymentModeKeys.INTENT);
params[PayUPaymentParamKey.hashes] = HashService.paymentHash(params[PayUPaymentParamKey.transaction_id]);
params[PayUPaymentParamKey.intent_app] = PayUTestCredentials.paytmScheme;
payUUpiFlutter.makeUPIPayment(params: params);
}
payWithSpecificApp() async {
var params = PayUParams.createPayUPaymentParamsForTPV();
params[PayUPaymentParamKey.intent_app] = PayUTestCredentials.paytmScheme;
params[PayUPaymentParamKey.package_name] =
PayUTestCredentials.paytmPackageName;
payUUpiFlutter.makeUPIPayment(params: params);
}
payViaUPICollect() async {
var params = PayUParams.createPayUPaymentParams(PayUPaymentModeKeys.upi);
params[PayUPaymentParamKey.vpa] = PayUTestCredentials.vpa;
params[PayUPaymentParamKey.hashes] = HashService.paymentHash(params[PayUPaymentParamKey.transaction_id]);
params[PayUPaymentParamKey.si_details] = PayUTestCredentials.si_details;
payUUpiFlutter.makeUPIPayment(params: params);
}
intentApps() async {
var data = await payUUpiFlutter.intentApps();
showAlertDialog(context, "intentApps", "$data");
}
@override
onPayUUPIMakePayment(Map response) {
String eventType = response[PayUEventType.eventType];
switch(eventType) {
case PayUEventType.onPaymentSuccess: {
String eventResponse = parsePayUResponse(response);
showAlertDialog(context,PayUEventType.onPaymentSuccess,eventResponse);
}
break;
case PayUEventType.onPaymentFailure: {
String eventResponse = parsePayUResponse(response);
showAlertDialog(context,PayUEventType.onPaymentFailure,eventResponse);
}
break;
case PayUEventType.onErrorReceived: {
String eventResponse = parsePayUResponse(response);
showAlertDialog(context,PayUEventType.onPaymentSuccess,eventResponse);
}
break;
case PayUEventType.onPaymentTerminate:
{
String eventResponse = parsePayUResponse(response);
showAlertDialog(context,PayUEventType.onPaymentSuccess,eventResponse);
}
break;
default: {
showAlertDialog(context,PayUEventType.invalidEvent,"");
}
break;
}
}
@override
onPayUUPIValidateVPA(Map response) {
String eventType = response[PayUEventType.eventType];
switch(eventType) {
case PayUEventType.onValidateSuccess: {
String eventResponse = parsePayUResponse(response);
showAlertDialog(context,PayUEventType.onValidateSuccess,eventResponse);
}
break;
case PayUEventType.onErrorReceived: {
String eventResponse = parsePayUResponse(response);
showAlertDialog(context,PayUEventType.onErrorReceived,eventResponse);
}
break;
default: {
showAlertDialog(context,PayUEventType.invalidEvent,"");
}
break;
}
}
String parsePayUResponse(Map response){
var eventResponse = response[PayUEventType.eventResponse];
return eventResponse != null ? eventResponse.toString() : "";
}
}
//Pass these values from your app to SDK, this data is only for test purpose
class PayUParams {
static Map createPayUPaymentParamsForTPV() {
var params = PayUParams.createPayUPaymentParams(PayUPaymentModeKeys.INTENT);
params[PayUPaymentParamKey.beneficiary_account_number] = PayUTestCredentials.accountNumber;
params[PayUPaymentParamKey.beneficiary_ifsc] = PayUTestCredentials.accountIFSC;
params[PayUPaymentParamKey.hashes] = HashService.paymentTPVHash(params[PayUPaymentParamKey.transaction_id]);
return params;
}
static Map createPayUPaymentParams(String paymentMode) {
var additionalParam = {
PayUAdditionalParamKeys.udf1: PayUTestCredentials.udf1,
PayUAdditionalParamKeys.udf2: PayUTestCredentials.udf2,
PayUAdditionalParamKeys.udf3: PayUTestCredentials.udf3,
PayUAdditionalParamKeys.udf4: PayUTestCredentials.udf4,
PayUAdditionalParamKeys.udf5: PayUTestCredentials.udf5
};
var payUPaymentParams = {
PayUPaymentParamKey.key: PayUTestCredentials.merchantKey,
PayUPaymentParamKey.amount: PayUTestCredentials.amount,
PayUPaymentParamKey.product_info: PayUTestCredentials.productInfo,
PayUPaymentParamKey.first_name: PayUTestCredentials.firstName,
PayUPaymentParamKey.email: PayUTestCredentials.email,
PayUPaymentParamKey.phone: PayUTestCredentials.phone,
PayUPaymentParamKey.ios_surl: PayUTestCredentials.sUrl,
PayUPaymentParamKey.ios_furl: PayUTestCredentials.fUrl,
PayUPaymentParamKey.android_surl: PayUTestCredentials.sUrl,
PayUPaymentParamKey.android_furl: PayUTestCredentials.fUrl,
PayUPaymentParamKey.environment: "0", //0 => Production 1 => Test
PayUPaymentParamKey.user_credentials: PayUTestCredentials.userCredential, //TODO: Pass user credential to fetch saved cards => A:B - Optional
PayUPaymentParamKey.transaction_id:"PayU_" + DateTime.now().millisecondsSinceEpoch.toString(),
PayUPaymentParamKey.additional_param: additionalParam,
PayUPaymentParamKey.payment_mode: paymentMode,
PayUPaymentParamKey.disable_intent_seamless_failure: "-1",
};
return payUPaymentParams;
}
}
class PayUTestCredentials {
static String merchantKey =""; //TODO: Add Merchant Key
static String merchantSalt = "";
static const sUrl = "https://cbjs.payu.in/sdk/success"; //TODO: Add Success URL.
static const fUrl = "https://cbjs.payu.in/sdk/failure"; //TODO Add Fail URL.
static String userCredential = ''; //TODO: Remove it
static String accountNumber = ''; //TODO: Remove it
static String accountIFSC = ''; //TODO: Remove it
static String vpa = ''; //TODO: Remove it
static const udf1 = "udf1";
static const udf2 = "udf2";
static const udf3 = "udf3";
static const udf4 = "udf4";
static const udf5 = "udf5";
static const amount = "1";
static const productInfo = "Info";
static const firstName = "Abc";
static const email = "[email protected]";
static const phone = "9999999999";
static const gPayScheme = "gpay";
static const paytmScheme = "paytm";
static const paytmPackageName = "net.one97.paytm";
static var si_details = {
PayUSIParamsKeys.is_free_trial: "0",
PayUSIParamsKeys.si: '1',
PayUSIParamsKeys.si_params: {
PayUSIParamsKeys.is_free_trial: "0",
PayUSIParamsKeys.billing_amount: '1', //Required
PayUSIParamsKeys.billing_interval: 1, //Required
PayUSIParamsKeys.payment_start_date: '2022-12-24', //Required
PayUSIParamsKeys.payment_end_date: '2023-12-24', //Required
PayUSIParamsKeys.billing_cycle: //Required
'ONCE', // YEARLY | MONTHLY | WEEKLY | DAILY | ONCE | ADHOC
PayUSIParamsKeys.billing_currency: 'INR',
PayUSIParamsKeys.billing_limit: 'ON', //ON, BEFORE, AFTER
PayUSIParamsKeys.billing_rule: 'MAX', //MAX, EXACT
PayUSIParamsKeys.si: '1', //MAX, EXACT
}
};
}
class HashService {
static Map paymentHash(String txnId) {
var finalHashString = paymentHashString(txnId) + '|' + PayUTestCredentials.merchantSalt;
var paymentHash = HashService.calculateHash(finalHashString);
var hash = {PayUPaymentParamKey.payment: paymentHash};
return hash;
}
static Map paymentTPVHash(String txnId) {
var beneficiaryDetail =
"{\"beneficiaryAccountNumber\":\"" +
PayUTestCredentials.accountNumber +
"\"" +
",\"ifscCode\":\"" +
PayUTestCredentials.accountIFSC +
"\"" +
"}";
var finalHashStirng = paymentHashString(txnId) + '|' + beneficiaryDetail + '|' + PayUTestCredentials.merchantSalt;
var paymentHash = HashService.calculateHash(finalHashStirng);
var hash = {PayUPaymentParamKey.payment: paymentHash};
return hash;
}
static Map validateVPAHash(String vpa) {
var vpaHash = HashService.calculateHash(PayUTestCredentials.merchantKey +
'|' +
"validateVPA" +
'|' +
vpa +
'|' +
PayUTestCredentials.merchantSalt);
var hash = {PayUPaymentParamKey.validate_vpa: vpaHash};
return hash;
}
static String paymentHashString(String txnId) {
var hashString =
'${PayUTestCredentials.merchantKey}|$txnId|${PayUTestCredentials.amount}|${PayUTestCredentials.productInfo}|${PayUTestCredentials.firstName}|${PayUTestCredentials.email}|${PayUTestCredentials.udf1}|${PayUTestCredentials.udf2}|${PayUTestCredentials.udf3}|${PayUTestCredentials.udf4}|${PayUTestCredentials.udf5}|||||';
return hashString;
}
static String getSHA512Hash(String hashData) {
var bytes = utf8.encode(hashData); // data being hashed
var hash = sha512.convert(bytes);
return hash.toString();
}
static String calculateHash(String data) {
print("PayU flutter hash Stirng $data");
var hash = getSHA512Hash(data);
print("PayU flutter hashData $hash");
//Don't use this method, get the hash from your backend.
return hash;
}
}Metadata
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Metadata
The PayU UPI SDK Flutter provides a complete Solution for the Flutter App. This will support both iOS and Android.
Documentation
License
MIT (license)
Dependencies
flutter, plugin_platform_interface
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