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:

iOS: https://github.com/mikebuss/MTBBarcodeScanner

Android: https://github.com/dm77/barcodescanner

Features

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

Getting Started

Android

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 BarcodeScanner activity to your AndroidManifest.xml. Do NOT modify the name.

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

Edit your project-level build.gradle file to look like this:

buildscript {
    ext.kotlin_version = '1.2.31'
    ...
    dependencies {
        ...
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    }
}
...

Edit your app-level build.gradle file to look like this:

apply plugin: 'kotlin-android'
...
dependencies {
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"
    ...
}

Now you can depend on the barcode_scan plugin in your pubspec.yaml file:

dependencies:
  ...
  barcode_scan: ^0.0.3

Click "Packages get" in Android Studio or run flutter packages get in your project folder.

iOS

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

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

Libraries

barcode_scan

Dart

dart:ui
Built-in types and core primitives for a Flutter application. [...]

Core

dart:async
Support for asynchronous programming, with classes such as Future and Stream. [...]
dart:collection
Classes and utilities that supplement the collection support in dart:core. [...]
dart:convert
Encoders and decoders for converting between different data representations, including JSON and UTF-8. [...]
dart:core
Built-in types, collections, and other core functionality for every Dart program. [...]
dart:developer
Interact with developer tools such as the debugger and inspector. [...]
dart:math
Mathematical constants and functions, plus a random number generator. [...]
dart:typed_data
Lists that efficiently handle fixed sized data (for example, unsigned 8 byte integers) and SIMD numeric types. [...]

VM

dart:io
File, socket, HTTP, and other I/O support for non-web applications. [...]
dart:isolate
Concurrent programming using isolates: independent workers that are similar to threads but don't share memory, communicating only via messages. [...]