yandex_kassa

Yandex.Kassa (Yandex.Checkout) plugin for both Android and iOS platforms. Implements Yandex Checkout SDK for Flutter. Official documentation can be found here:

Please, follow the official documentation for quick start. Note, that you need to get .framework files from Yandex Money support to use plugin for iOS. Don't forget to set them as Embed & Sign or Embed Without Signing at Runner -> General -> Frameworks, Libraries and Embedded Content

Example

Demonstrated how use the plugin.

import 'dart:convert';

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter_localizations/flutter_localizations.dart';
import 'package:yandex_kassa/yandex_kassa.dart';
import 'package:http_client/console.dart';

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

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

final idempotenceKey = 'some_unique_idempotence_key' +
    DateTime.now().microsecondsSinceEpoch.toString();
const shopId = 'some_shop_id';
const clientAppKey = 'live_MTkzODU2VY5GiyQq2GMPsCQ0PW7f_RSLtJYOT-mp_CA';
const secretKey = 'your secret key';

class _MyAppState extends State<MyApp> {
  final paymentParameters = PaymentParameters(
      amount: Amount(5),
      purchaseName: 'Product name',
      purchaseDescription: 'Some detailed description of current purchase',
      clientApplicationKey: clientAppKey,
      iosColorScheme: IosColorScheme.redOrange,
      paymentMethods: [PaymentMethod.bankCard, PaymentMethod.sberbank],
      applePayMerchantIdentifier: "merchant.ru.yandex.mobile.msdk.debug",
      androidColorScheme: IosColorScheme.redOrange,
      iosTestModeSettings: IosTestModeSettings(charge: Amount(3.1415926)),
      googlePayParameters: GooglePayCardNetwork.values,
      shopId: shopId,
      returnUrl: 'https://your.return/url',
      androidTestModeSettings: AndroidTestModeSettings(
          mockConfiguration: AndroidMockConfiguration(
              serviceFee: Amount(3.1415926),
              paymentAuthPassed: true,
              completeWithError: false,
              linkedCardsCount: 3)));

  TokenizationResult tokenizationResult;
  Map paymentResult;
  bool loading = false;

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      localizationsDelegates: [
        GlobalMaterialLocalizations.delegate,
        GlobalWidgetsLocalizations.delegate,
        GlobalCupertinoLocalizations.delegate,
      ],
      supportedLocales: [
        const Locale('en', 'US'),
        const Locale('ru', 'RU'),
      ],
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Plugin example app'),
        ),
        body: Stack(children: [
          Center(
              child: Column(
                  mainAxisAlignment: MainAxisAlignment.center,
                  crossAxisAlignment: CrossAxisAlignment.center,
                  children: [
                Spacer(),
                Container(
                    child: OutlineButton(
                        child: const Text('Open payment screen'),
                        onPressed: () async {
                          final result = await YandexKassa.startCheckout(
                              paymentParameters);
                          setState(() {
                            tokenizationResult = result;
                          });
                        })),
                if (tokenizationResult != null) ...[
                  (tokenizationResult.success
                      ? Text(
                          'Token has been successfully received\nToken: ${tokenizationResult?.paymentData?.token ?? ""}\nPayment method: ${tokenizationResult?.paymentData?.paymentMethod ?? ""}',
                          style: TextStyle(
                              color: Colors.green,
                              fontSize: 16,
                              fontWeight: FontWeight.bold),
                          textAlign: TextAlign.center,
                        )
                      : Text(
                          'An error occured\n${tokenizationResult.error}',
                          style: TextStyle(
                              color: Colors.redAccent,
                              fontSize: 16,
                              fontWeight: FontWeight.bold),
                          textAlign: TextAlign.center,
                        )),
                  if (tokenizationResult?.success == true)
                    OutlineButton(
                      child: Text('Send Token'),
                      onPressed: () async {
                        final httpClient = ConsoleClient();
                        setState(() => loading = true);
                        Request request = Request(
                            'POST',
                            Uri.parse(
                                'https://payment.yandex.net/api/v3/payments'),
                            headers: Headers(),
                            body: json.encode({
                              "payment_token":
                                  tokenizationResult.paymentData.token,
                              "amount": paymentParameters.amount.jsonIso4217,
                              "confirmation": {
                                "type": "redirect",
                                "return_url":
                                    "https://4081d9747ee2.ngrok.io/v1.3/verifications/yandex_checkout"
                              },
                              "metadata": {"my_key": "my_val"},
                              "description":
                                  paymentParameters.purchaseDescription
                            }));
                        request.headers.add("Idempotence-Key", idempotenceKey);
                        request.headers.add(
                            'Authorization',
                            "Basic " +
                                base64Encode(
                                    utf8.encode("$shopId:$secretKey")));
                        request.headers.add('Content-Type', 'application/json');
                        Response response = await httpClient.send(request);
                        paymentResult =
                            json.decode(await response.readAsString());
                        setState(() => loading = false);
                      },
                    ),
                  if (paymentResult != null)
                    Text(
                      paymentResult.toString(),
                      style: TextStyle(
                          color: Colors.green,
                          fontSize: 16,
                          fontWeight: FontWeight.bold),
                      textAlign: TextAlign.center,
                    )
                ],
                Spacer(),
              ])),
          if (loading)
            Container(
                width: double.infinity,
                height: double.infinity,
                color: Colors.black26,
                child: Center(child: CircularProgressIndicator()))
        ]),
      ),
    );
  }
}

TODO

  • add card scanning

Libraries

amount
android_color_scheme
android_test_mode_settings
currency
google_pay_card_network
ios_color_scheme
ios_test_mode_settings
json_encodable
kassa
payment_method
payment_parameters
payment_result
save_payment_method_mode
yandex_kassa