qr_from_file

Exclusive for Android

A plugin that scans qr code from files (only), whether it's from your flutter assets or your gallery.

Getting Started

Make sure you have images downloaded for gallery qr scan.

For qr scanning of images inside your flutter assets dont forget to add them in your pubspec.yaml file.

API

Android

The content of the qr barcode is given to a String:

For qr barcode images inside the flutter assets file:

String rawResult = QrFromFile.scanImageFromAssets('assets/images/qr_wikipedia.png'); //raw result

For qr barcode images inside the device storage (gallery):

String rawResult = QrFromFile.scanImageFromGallery('/storage/emulated/0/Download/qr_wikipedia.png'); //raw result

iOS

For now the iOs functionality has been disabled. The app won't crash on iOS if you add it to your pubspec.yaml file.

Libraries

qr_from_file

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. [...]