telr_mobile_payment_sdk 3.0.1

Flutter plugin that wraps Telr native iOS/Android SDKs via platform channels to present the payment UI.

Telr Flutter Payments SDK

Accept Telr payments in your Flutter app with a single call. The SDK presents the Telr checkout, handles the flow, and returns a clear success/failure result.

Requirements

• Flutter: ≥ 3.19 (Dart ≥ 3)
• iOS: ≥ 15.1
• Android: minSdk ≥ 21, targetSdk ≥ 34
• Backend: HTTPS tokenURL and orderURL

Install

Add to pubspec.yaml and fetch:

dependencies:
  telr_mobile_payment_sdk: ^X.Y.Z

flutter pub get

iOS setup

1. Set minimum iOS in ios/Podfile and enable static frameworks:

platform :ios, '15.1'

target 'Runner' do
  use_frameworks! :linkage => :static
end

2. Install pods:

cd ios && pod install

• If CocoaPods cannot find TelrSDK, ensure Telr’s private/spec source is configured in your Podfile, run pod repo update, then re-install.

Android setup

1. Ensure repositories in android/settings.gradle:

dependencyResolutionManagement {
  repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
  repositories {
    google()
    mavenCentral()
  }
}

2. Set SDK versions in android/app/build.gradle:

android {
  compileSdkVersion 34

  defaultConfig {
    minSdkVersion 21
    targetSdkVersion 34
  }
}

3. Optional: initialize on app load (configure language/logging)

Call the SDK initializer early (e.g., in main() before runApp()), especially if you want to set the preferred language or enable debug logging.

import 'package:flutter/widgets.dart';
import 'package:telr_mobile_payment_sdk/telr_mobile_payment_sdk.dart';

Future<void> main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await TelrSdk.init(
    preferredLanguageCode: 'en',
    debugLoggingEnabled: true,
    samsungPayServiceId: null,
    samsungPayMerchantId: null,
  );
  runApp(const MyApp());
}

Use

Minimal example:

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

class PayButton extends StatelessWidget {
  const PayButton({super.key});

  @override
  Widget build(BuildContext context) {
    return ElevatedButton(
      onPressed: () async {
        try {
          final res = await TelrSdk.presentPayment(
            'https://merchant.example.com/token',
            'https://merchant.example.com/order',
          );
          final msg = res.success
              ? 'Payment successful'
              : 'Payment failed: ${res.message}';
          if (context.mounted) {
            ScaffoldMessenger.of(context)
                .showSnackBar(SnackBar(content: Text(msg)));
          }
        } catch (e) {
          if (context.mounted) {
            ScaffoldMessenger.of(context).showSnackBar(
              SnackBar(content: Text('Unexpected error: $e')),
            );
          }
        }
      },
      child: const Text('Pay with Telr'),
    );
  }
}

If you need to set the language or other options, initialize once on app load as shown in the Android setup section, then call presentPayment when needed.

API

• init({ preferredLanguageCode, debugLoggingEnabled, samsungPayServiceId, samsungPayMerchantId }) → Future<PaymentResponse>
  • Initializes the SDK and applies configuration. Call once on app startup.
• presentPayment(tokenURL, orderURL) → Future<PaymentResponse>
  • Presents the Telr payment UI full-screen and resolves when completed.

Types:

class PaymentResponse {
  final bool success;
  final String message;
  const PaymentResponse({required this.success, required this.message});
}

Merchant checklist

• Expose HTTPS tokenURL and orderURL from your backend.
• Ensure device/emulator can reach both URLs.
• Handle the returned result to confirm/cancel the order server-side.

Troubleshooting

• Android: E002 "Unable to register for Activity Result": Ensure initialization happens during app load. Call TelrSdk.init(...) in main() before runApp().
• iOS: CocoaPods cannot find TelrSDK: Configure Telr spec source, run pod repo update, then pod install.
• iOS: Build fails due to iOS version: Set platform :ios, '15.1' or newer.
• Android: minSdk/targetSdk mismatch: Use min 21 / target 34 / compile 34.
• Network/HTTP errors: Verify backend endpoints and connectivity.

Security

• Always use HTTPS; validate server responses.
• Never embed secrets in the app or log cardholder data.

Links

• Package on pub.dev: telr_mobile_payment_sdk
• Example app: see example/

License

MIT