flutter_google_pay 0.1.3+2

Porting of Google Pay (a digital wallet platform and online payment system) to Flutter.

example/lib/main.dart

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

void main() => runApp(MyApp());

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

class _MyAppState extends State<MyApp> {
  BuildContext scaffoldContext;

  @override
  void initState() {
    super.initState();
  }

  _makePayment() async {
    var environment = 'rest'; // or 'production'

    if (!(await FlutterGooglePay.isAvailable(environment))) {
      _showToast(scaffoldContext, 'Google pay not available');
    } else {
      bool customData = false;

      if (!customData) {
        PaymentItem pm = PaymentItem(
            stripeToken: 'pk_test_1IV5H8NyhgGYOeK6vYV3Qw8f',
            stripeVersion: "2018-11-08",
            currencyCode: "usd",
            amount: "0.10",
            gateway: 'stripe');

        FlutterGooglePay.makePayment(pm).then((Result result) {
          if (result.status == ResultStatus.SUCCESS) {
            _showToast(scaffoldContext, 'Success');
          }
        }).catchError((dynamic error) {
          _showToast(scaffoldContext, error.toString());
        });
      } else {
        //or
        ///docs https://developers.google.com/pay/api/android/guides/tutorial
        var jsonPayment = Map();

        FlutterGooglePay.makeCustomPayment(jsonPayment).then((dynamic result) {
          //TODO
        }).catchError((error) {
          //TODO
        });
      }
    }
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
          appBar: AppBar(
            title: const Text('Plugin example app'),
          ),
          body: Builder(builder: (context) {
            scaffoldContext = context;
            return Center(
                child: FlatButton(
              onPressed: _makePayment,
              child: Text('Pay'),
            ));
          })),
    );
  }

  void _showToast(BuildContext context, String message) {
    final scaffold = Scaffold.of(context);
    scaffold.showSnackBar(SnackBar(
      content: Text(message),
      action: SnackBarAction(
        label: 'UNDO',
        onPressed: () {},
      ),
    ));
  }
}