Flutter SDK

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import 'package:flutter/material.dart';
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import 'package:coinflow_card_form/coinflow_card_form.dart';
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class PaymentPage extends StatefulWidget {
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  const PaymentPage({super.key});
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  @override
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  State<PaymentPage> createState() => _PaymentPageState();
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}
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class _PaymentPageState extends State<PaymentPage> {
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  final _controller = CoinflowCardFormController();
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  Future<void> _tokenize() async {
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    try {
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      final response = await _controller.tokenize();
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      debugPrint('Token: ${response.token}');
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    } catch (e) {
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      // surface error to user
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    }
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  }
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  @override
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  Widget build(BuildContext context) {
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    return Column(
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      children: [
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        CoinflowCardFormWidget(
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          variant: CardFormVariant.cardForm,
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          merchantId: 'your-merchant-id',
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          env: CoinflowEnv.sandbox,
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          controller: _controller,
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        ),
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        FilledButton(onPressed: _tokenize, child: const Text('Pay')),
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      ],
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    );
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  }
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}

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final _controller = CoinflowCardFormController(onLoad: () {
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  setState(() => _ready = true);
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});

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const env = bool.fromEnvironment('dart.vm.product')
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    ? CoinflowEnv.prod
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    : CoinflowEnv.sandbox;