Mollie Pay (Flutter) #

A minimal Flutter helper demo for taking payments with Mollie via an in-app WebView-style flow (package: mollie_pay).
The example shows how to start a checkout, handle the return deep link, and display the resulting status.

This package/example is not an official Mollie SDK. Use test keys for development and never ship your secret keys in the client.

Features #

• Start a Mollie checkout from Flutter
• Redirect back to your app via a return deep link
• Simple success/pending/failed status handling
• Example app included under example/

Getting started #

Installation #

Add the dependency in pubspec.yaml:

dependencies:
  mollie_pay: ^2.0.0

Then run:

flutter pub get

Provide your API key #

Recommended: inject via --dart-define so you don't hardcode keys:

flutter run --dart-define=MOLLIE_TEST_KEY=test_xxx

Access it in code:

const mollieTestKey = String.fromEnvironment(
  'MOLLIE_TEST_KEY',
  defaultValue: 'test_example_for_dev_only',
);

For production, use live keys securely and verify payments server-side using Mollie webhooks.

Usage #

final result = await MollieCheckout.startPayment(
  context: context,
  apiKey: mollieTestKey,
  amount: '100.00',
  currency: 'USD',
  description: 'Demo payment',
  returnDeepLink: 'myapp://payment-return',
);

// result.status -> "success" | "failed" | "pending"

Example app #

See the full example in example/lib/main.dart.

FilledButton(
  onPressed: _busy ? null : _pay,
  child: const Text('Pay \$100.00'),
);

Deep links #

You must configure OS deep links / app links so that returnDeepLink (e.g., myapp://payment-return) opens your app.
In this demo, the WebView intercepts navigation to the returnDeepLink and closes automatically when reached.

License #

This project is licensed under the MIT License - see LICENSE.