fintech_card_core 0.1.1

A headless Flutter plugin providing a universal card-reading engine for Fintech apps — NFC (EMV/ISO 7816), OCR, and manual entry. Native NFC hardware bridge via MethodChannel; all APDU/EMV logic in Dart.

example/lib/main.dart

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

import 'pages/manual_page.dart';
import 'pages/nfc_page.dart';
import 'pages/ocr_page.dart';

void main() => runApp(const ExampleApp());

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'fintech_card_core',
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        colorSchemeSeed: Colors.indigo,
        useMaterial3: true,
      ),
      home: const DemoHome(),
    );
  }
}

class DemoHome extends StatefulWidget {
  const DemoHome({super.key});

  @override
  State<DemoHome> createState() => _DemoHomeState();
}

class _DemoHomeState extends State<DemoHome> {
  final _controller = CardReaderController();
  int _tab = 0;

  @override
  void dispose() {
    _controller.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('fintech_card_core'),
        centerTitle: true,
      ),
      body: IndexedStack(
        index: _tab,
        children: [
          OcrPage(controller: _controller),
          NfcPage(controller: _controller),
          ManualPage(controller: _controller),
        ],
      ),
      bottomNavigationBar: NavigationBar(
        selectedIndex: _tab,
        onDestinationSelected: (i) => setState(() => _tab = i),
        destinations: const [
          NavigationDestination(
            icon: Icon(Icons.camera_alt_outlined),
            selectedIcon: Icon(Icons.camera_alt),
            label: 'Camera',
          ),
          NavigationDestination(
            icon: Icon(Icons.nfc_outlined),
            selectedIcon: Icon(Icons.nfc),
            label: 'NFC',
          ),
          NavigationDestination(
            icon: Icon(Icons.keyboard_outlined),
            selectedIcon: Icon(Icons.keyboard),
            label: 'Manual',
          ),
        ],
      ),
    );
  }
}