flutter_qrreader_tut

.\lib\main.dart

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter QR Reader Tutorial',
      theme: ThemeData(
        primarySwatch: Colors.amber,
      ),
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatefulWidget {
  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  String _qrInfo = 'Scan a Code';
  bool _camState = false;
  _scanCode() {}

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Flutter QR Reader Tutorial'),
      ),
      body: Text(_qrInfo),
      floatingActionButton: Visibility(
        visible: !_camState,
        child: FloatingActionButton(
          onPressed: _scanCode,
          tooltip: 'Scan',
          child: Icon(Icons.scanner),
        ),
      ),
    );
  }
}