barcode_scan 0.0.4

  • Example
  • Installing
  • Versions
  • 97

Barcode Scanner

A flutter plugin for scanning 2D barcodes and QR codes.

This provides a simple wrapper for two commonly used iOS and Android libraries:




  • [x] Scan 2D barcodes
  • [x] Scan QR codes
  • [x] Control the flash while scanning
  • [x] Permission handling
  • [ ] Support multiple barcode libraries

Getting Started


For Android, you must do the following before you can use the plugin:

  • Add the camera permission to your AndroidManifest.xml

    <uses-permission android:name="android.permission.CAMERA" />

  • Add the Barcode activity to your AndroidManifest.xml

    <activity android:name="com.apptreesoftware.barcodescan.BarcodeScannerActivity"/>


To use on iOS, you must add the the camera usage description to your Info.plist

<string>Camera permission is required for barcode scanning.</string>

[0.0.4] - 2/8/17

  • Fix missing gradle dependency (thanks to toteto)
  • Update gradle dependencies

[0.0.3] - 2/8/17

  • Improved permission handling (thanks to BenSower)
  • Added MIT license

[0.0.2] - 11/7/17

[0.0.1] - 10/29/17

  • Supports 2D & QR Codes
  • Control flash while scanning


import 'dart:async';

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

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

class MyApp extends StatefulWidget {
  _MyAppState createState() => new _MyAppState();

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

  initState() {

  Widget build(BuildContext context) {
    return new MaterialApp(
      home: new Scaffold(
          appBar: new AppBar(
            title: new Text('Barcode Scanner Example'),
          body: new Center(
            child: new Column(
              children: <Widget>[
                new Container(
                  child: new MaterialButton(
                      onPressed: scan, child: new Text("Scan")),
                  padding: const EdgeInsets.all(8.0),
                new Text(barcode),

  Future scan() async {
    try {
      String barcode = await BarcodeScanner.scan();
      setState(() => this.barcode = barcode);
    } on PlatformException catch (e) {
      if (e.code == BarcodeScanner.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');

Use this package as a library

1. Depend on it

Add this to your package's pubspec.yaml file:

  barcode_scan: ^0.0.4

2. Install it

You can install packages from the command line:

with Flutter:

$ flutter packages get

Alternatively, your editor might support flutter packages get. Check the docs for your editor to learn more.

3. Import it

Now in your Dart code, you can use:

import 'package:barcode_scan/barcode_scan.dart';
Version Uploaded Documentation Archive
0.0.4 Apr 17, 2018 Go to the documentation of barcode_scan 0.0.4 Download barcode_scan 0.0.4 archive
0.0.3 Feb 8, 2018 Go to the documentation of barcode_scan 0.0.3 Download barcode_scan 0.0.3 archive
0.0.2 Nov 8, 2017 Go to the documentation of barcode_scan 0.0.2 Download barcode_scan 0.0.2 archive
0.0.1 Oct 30, 2017 Go to the documentation of barcode_scan 0.0.1 Download barcode_scan 0.0.1 archive
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Learn more about scoring.

We analyzed this package on Aug 10, 2018, and provided a score, details, and suggestions below. Analysis was completed with status completed using:

  • Dart: 2.0.0
  • pana: 0.11.8
  • Flutter: 0.5.7


Detected platforms: Flutter

References Flutter, and has no conflicting libraries.

Issues and suggestions

Add SDK constraint in pubspec.yaml.

For information about setting SDK constraint, please see

The description is too short.

Add more detail about the package, what it does and what is its target use case. Try to write at least 60 characters.

Package is pre-v1 release.

While there is nothing inherently wrong with versions of 0.*.*, it usually means that the author is still experimenting with the general direction of the API.


Package Constraint Resolved Available
Direct dependencies
flutter 0.0.0
Transitive dependencies
collection 1.14.6 1.14.11
meta 1.1.5 1.1.6
sky_engine 0.0.99
typed_data 1.1.5 1.1.6
vector_math 2.0.6 2.0.8