fcs/lib/pages/barcode_screen_page.dart

import 'package:barcode_scan/barcode_scan.dart';
import 'package:barcode_scan/model/scan_result.dart';
import 'package:flutter/material.dart';
import 'package:flutter_icons/flutter_icons.dart';
import 'package:font_awesome_flutter/font_awesome_flutter.dart';
import 'package:provider/provider.dart';
import 'package:fcs/model/product_model.dart';
import 'package:fcs/fcs/common/helpers/theme.dart';
import 'package:fcs/vo/buyer.dart';
import 'package:fcs/vo/product.dart';
import 'package:fcs/widget/progress.dart';

class BarcodeScreenPage extends StatefulWidget {
  final BuyerProduct buyerProduct;
  const BarcodeScreenPage({Key key, this.buyerProduct}) : super(key: key);
  @override
  _BarcodeScreenPageState createState() => _BarcodeScreenPageState();
}

class _BarcodeScreenPageState extends State<BarcodeScreenPage> {
  final _formKey = GlobalKey<FormState>();
  bool _isLoading = false;
  ScanResult scanResult;

  @override
  void initState() {
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return LocalProgress(
      inAsyncCall: _isLoading,
      child: Scaffold(
          appBar: AppBar(
            backgroundColor: primaryColor,
            title: Text("Bar Code Scranner"),
          ),
          body: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            crossAxisAlignment: CrossAxisAlignment.stretch,
            children: <Widget>[
              InkWell(
                child: Row(
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: <Widget>[
                    Text(
                      "Scan : ",
                      style: TextStyle(
                          color: primaryColor,
                          fontWeight: FontWeight.bold,
                          fontSize: 20),
                    ),
                    Icon(
                      Ionicons.ios_qr_scanner,
                      size: 50,
                    ),
                  ],
                ),
                onTap: () async {
                  await scan();
                },
              )
            ],
          )),
    );
  }

  Future scan() async {
    var result = await BarcodeScanner.scan();
    print("ScanResult => $result");
    setState(() => scanResult = result);
  }
}