qrscan 0.0.2

A new Flutter project.

example/lib/main.dart

import 'dart:async';

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:qrscan/qrscan.dart';

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

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  String barcode = "";

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('Qrcode Scanner Example'),
        ),
        body: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.end,
            children: <Widget>[
              Text(barcode),
              MaterialButton(
                onPressed: scan,
                child: Text("Scan"),
                color: Colors.blue,
                textColor: Colors.white,
              ),
            ],
          ),
        ),
      ),
    );
  }

  Future scan() async {
    try {
      String barcode = await Qrscan.scan();
      setState(() => this.barcode = barcode);
    } on PlatformException catch (e) {
      if (e.code == Qrscan.CameraAccessDenied) {
        setState(() {
          this.barcode = 'The user did not grant the camera permission!';
        });
      } else {
        setState(() => this.barcode = 'Unknown error: $e');
      }
    } on FormatException {
      setState(() => this.barcode = 'null (User returned using the "back"-button before scanning anything. Result)');
    } catch (e) {
      setState(() => this.barcode = 'Unknown error: $e');
    }
  }
}