digit_scanner 0.0.0-dev.7

A Scanner package used for scanning QR Codes and GS1 Barcodes.

example/lib/main.dart

import 'package:digit_scanner/blocs/scanner.dart';
import 'package:digit_scanner/pages/qr_scanner.dart';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';

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

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

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        // This is the theme of your application.
        //
        // TRY THIS: Try running your application with "flutter run". You'll see
        // the application has a purple toolbar. Then, without quitting the app,
        // try changing the seedColor in the colorScheme below to Colors.green
        // and then invoke "hot reload" (save your changes or press the "hot
        // reload" button in a Flutter-supported IDE, or press "r" if you used
        // the command line to start the app).
        //
        // Notice that the counter didn't reset back to zero; the application
        // state is not lost during the reload. To reset the state, use hot
        // restart instead.
        //
        // This works for code too, not just values: Most code changes can be
        // tested with just a hot reload.
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
        useMaterial3: true,
      ),
      home: const MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});

  // This widget is the home page of your application. It is stateful, meaning
  // that it has a State object (defined below) that contains fields that affect
  // how it looks.

  // This class is the configuration for the state. It holds the values (in this
  // case the title) provided by the parent (in this case the App widget) and
  // used by the build method of the State. Fields in a Widget subclass are
  // always marked "final".

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;

  DigitScannerBloc scannerBloc = DigitScannerBloc(const DigitScannerState());

  @override
  void initState() {
    scannerBloc = DigitScannerBloc(const DigitScannerState());
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    // This method is rerun every time setState is called, for instance as done
    // by the _incrementCounter method above.
    //
    // The Flutter framework has been optimized to make rerunning build methods
    // fast, so that you can just rebuild anything that needs updating rather
    // than having to individually change instances of widgets.
    return BlocProvider<DigitScannerBloc>(
      create: (context) => scannerBloc,
      child: Scaffold(
        appBar: AppBar(
          // TRY THIS: Try changing the color here to a specific color (to
          // Colors.amber, perhaps?) and trigger a hot reload to see the AppBar
          // change color while the other colors stay the same.
          backgroundColor: Theme.of(context).colorScheme.inversePrimary,
          // Here we take the value from the MyHomePage object that was created by
          // the App.build method, and use it to set our appbar title.
          title: Text(widget.title),
        ),
        body: Center(
          // Center is a layout widget. It takes a single child and positions it
          // in the middle of the parent.
          child: BlocBuilder<DigitScannerBloc, DigitScannerState>(
              builder: (context, scannerState) {
            return Column(
              // Column is also a layout widget. It takes a list of children and
              // arranges them vertically. By default, it sizes itself to fit its
              // children horizontally, and tries to be as tall as its parent.
              //
              // Column has various properties to control how it sizes itself and
              // how it positions its children. Here we use mainAxisAlignment to
              // center the children vertically; the main axis here is the vertical
              // axis because Columns are vertical (the cross axis would be
              // horizontal).
              //
              // TRY THIS: Invoke "debug painting" (choose the "Toggle Debug Paint"
              // action in the IDE, or press "p" in the console), to see the
              // wireframe for each widget.
              mainAxisAlignment: MainAxisAlignment.center,
              children: <Widget>[
                scannerState.qrCodes.isNotEmpty
                    ? const Text(
                        'Scanned Code: ',
                      )
                    : const Text('Not yet scanned'),
                scannerState.qrCodes.isNotEmpty
                    ? Text(
                        scannerState.qrCodes.last,
                      )
                    : const Icon(Icons.emoji_emotions_rounded),
              ],
            );
          }),
        ),
        floatingActionButton: FloatingActionButton(
          onPressed: () {
            Navigator.of(context).push(
              MaterialPageRoute(
                builder: (BuildContext context) => const DigitScannerPage(
                  quantity: 1,
                  isGS1code: false,
                ),
              ),
            );
          },
          tooltip: 'Open Scanner',
          child: const Icon(Icons.open_in_browser_rounded),
        ), // This trailing comma makes auto-formatting nicer for build methods.
      ),
    );
  }
}