payment_gateway 0.0.2

A new Flutter plugin to create payment gateway using SafexPay

example/lib/main.dart

import 'dart:math';

import 'package:flutter/material.dart';
import 'dart:async';

import 'package:flutter/services.dart';
import 'package:payment_gateway/constants/utility.dart';
import 'package:payment_gateway/payment_gateway.dart';
import 'package:payment_gateway/screen_1.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  String _platformVersion = 'Unknown';

  @override
  void initState() {
    super.initState();
    initPlatformState();
    // MerchantConstants.setDetails(mId: '201608020002', mKey: 'U7BuLoPuNcR3hiZQnhzaP6qglwGIE9RF/fRF2EkF/hI=', aggId: 'paygate');
    MerchantConstants.setDetails(mId: '201705240001', mKey: 'rXbmCVAcefiPyWZz9wVs9WBYPbaYVfDV4VxwowyJBHg=', aggId: 'paygate');
  }

  // Platform messages are asynchronous, so we initialize in an async method.
  Future<void> initPlatformState() async {
    String platformVersion;
    // Platform messages may fail, so we use a try/catch PlatformException.
    // We also handle the message potentially returning null.
    try {
      platformVersion =
          await PaymentGateway.platformVersion ?? 'Unknown platform version';
    } on PlatformException {
      platformVersion = 'Failed to get platform version.';
    }

    // If the widget was removed from the tree while the asynchronous platform
    // message was in flight, we want to discard the reply rather than calling
    // setState to update our non-existent appearance.
    if (!mounted) return;

    setState(() {
      _platformVersion = platformVersion;
    });
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
        debugShowCheckedModeBanner: false,
        home: UserInputPage());
  }
}

class UserInputPage extends StatefulWidget {
  @override
  _UserInputPageState createState() => _UserInputPageState();
}

class _UserInputPageState extends State<UserInputPage> implements SafeXPayPaymentCallback{
  TextEditingController controller = TextEditingController();
  GlobalKey<ScaffoldState> _scaffoldKey = GlobalKey<ScaffoldState>();
  late SafeXPayPaymentCallbackObservable _safeXPayPaymentCallbackObservable;

  @override
  void initState() {
    super.initState();
    _safeXPayPaymentCallbackObservable = SafeXPayPaymentCallbackObservable();
    _safeXPayPaymentCallbackObservable.register(this);
  }

  @override
  void dispose() {
    _safeXPayPaymentCallbackObservable.unRegister(this);
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      key: _scaffoldKey,
      appBar: AppBar(
        title: Text('DemoPaymentApp'),
      ),
      body: Padding(
        padding: const EdgeInsets.all(16.0),
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          mainAxisSize: MainAxisSize.max,
          children: [
            TextField(
              controller: controller,
              keyboardType: TextInputType.number,
              decoration: InputDecoration(hintText: 'Enter the amount to pay'),
            ),
            const SizedBox(
              height: 32,
            ),
            ElevatedButton(
                onPressed: () {
                  String amount = controller.text.toString().trim();
                  if(amount.isEmpty){
                    Utility.showSnackBarMessage(state: _scaffoldKey.currentState!, message: 'Please enter amount to pay');
                  } else {
                    MaterialPageRoute route = MaterialPageRoute(builder: (context) => SafeXPayGateway(
                        orderNo: '${Random().nextInt(1000)}',
                        amount: double.parse(controller.text),
                        currency: 'INR',
                        transactionType: 'SALE',
                        channel: 'MOBILE',
                        successUrl: 'http://localhost/safexpay/response.php',
                        failureUrl: 'http://localhost/safexpay/response.php',
                        countryCode: 'IND'
                    ));
                    Navigator.push(context, route);
                  }
                },
                child: Text('Proceed to Payment', style: TextStyle(color: Colors.black),),
                style: ElevatedButton.styleFrom(
                    primary: Colors.cyanAccent,
                    // shape: RoundedRectangleBorder(),
                    padding: const EdgeInsets.symmetric(
                        vertical: 12, horizontal: 24),
                ),
            )
          ],
        ),
      ),
    );
  }

  @override
  void onInitiatePaymentFailure(String errorMessage) {
    Utility.showSnackBarMessage(state: _scaffoldKey.currentState!, message: 'Transaction failed');
  }

  @override
  void onPaymentCancelled() {
    Utility.showSnackBarMessage(state: _scaffoldKey.currentState!, message: 'Transaction Cancelled');
  }

  @override
  void onPaymentComplete(String orderID, String transactionID, String paymentID, String paymentStatus) {
    Utility.showSnackBarMessage(state: _scaffoldKey.currentState!, message: 'Transaction Successful');
  }
}

class NextPage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Column(
      children: [
        // AppHeader(),
        Expanded(
          child: MaterialApp(
            debugShowCheckedModeBanner: false,
            // home: LoginScreen(),
          ),
        ),
      ],
    );
  }
}