The Flutter barcode SDK series is coming to the end. This week, we switch the coding environment to macOS to finish the rest of the plugin platforms — iOS and MacOS — using Swift.

The Series of Flutter Barcode SDK

• How to Implement Flutter Barcode Scanner for Android
• Flutter Barcode Plugin — Writing C++ Code for Windows Desktop
• Flutter Barcode Plugin for Web: Interop between Dart and JavaScript
• Flutter Barcode Plugin for Linux: from Dart to C++

Download

• flutter_barcode_sdk
• iOS Barcode SDK
• macOS Barcode SDK

30-day FREE Trial

https://www.dynamsoft.com/customer/license/trialLicense/?product=dbr

Flutter Barcode Plugin for iOS

As always, we add the iOS template to the existing plugin project first:

flutter create --template=plugin --platforms=ios .

The command generates…

For the past several weeks, the Flutter plugin of Dynamsoft Barcode Reader has covered Windows, Android and Web. This week, we go through the plugin implementation for Linux. Similar to Windows, we combine Dart and C++ code for Linux. The unexpected thing is the C++ data types of Flutter defined for Linux change a lot. So it still takes a little bit of time to make the plugin work.

What You Should Know About Dynamsoft Barcode Reader

• https://www.dynamsoft.com/barcode-reader/downloads
• https://www.dynamsoft.com/customer/license/trialLicense/?product=dbr

Learning Resources for Flutter Desktop Development

• https://flutter.dev/desktop
• https://github.com/google/flutter-desktop-embedding
• https://github.com/flutter/samples/tree/master/experimental/desktop_photo_search

Step-by-step Flutter Linux Plugin Development

To initialize the plugin template for Linux, we need to switch the coding environment to Linux firstly, and then run the following command to add the…

This week, I made a new attempt, integrating Dynamsoft JavaScript Barcode SDK into the ongoing Flutter barcode plugin project. It is exciting to be capable of building web barcode reader apps with the same decodeFile() method used for mobile and desktop development.

What You Should Know

• https://www.dynamsoft.com/barcode-reader/downloads
• https://www.dynamsoft.com/customer/license/trialLicense/?product=dbr

References

• https://dart.dev/web/js-interop
• https://github.com/grandnexus/firebase-dart
• https://pub.dev/packages/js

Flutter Barcode SDK Plugin for Web Development

The above firebase_web is an excellent example of learning how to bridge Dart and JavaScript APIs. It inspired me a lot for Flutter web plugin implementation.

Initialize the Flutter plugin for web

Let’s add a web platform template to the existing plugin project:

flutter create --template=plugin --platforms=web .

The command only generates a flutter_barcode_sdk_web.dart file under the lib folder…

Last week, I wrote a step-by-step tutorial sharing how to build a Flutter barcode SDK plugin with Dynamsoft Barcode Reader. The platform-specific code of Android is done. This week, I am going to focus on Windows desktop. Since the Flutter desktop plugin development is still on the early stage, there are not too many learning resources available. It will be interesting and challenging to explore the desktop plugin implementation using C++.

What You Should Know

• Download offline SDK
• Get 30-day FREE Trial License

Learning Resources

The following resources are inspiring for Flutter Windows plugin development.

• https://flutter.dev/desktop
• https://github.com/google/flutter-desktop-embedding
• https://github.com/flutter/samples/tree/master/experimental/desktop_photo_search

Integrating C++ Barcode SDK into Flutter Windows Plugin

Let’s peek the windows plugin folder structure:

bin…

About two years ago, I wrote an article sharing how to build a Flutter barcode plugin with Dynamsoft Barcode Reader step by step. At that time, Flutter was still under development and only supported Android and iOS. Nowadays, Google has released Flutter 2, which allows developers to build apps for mobile, web, and desktop from a single codebase. If you want to build cross-platform apps, it is worth putting much effort into Flutter from now on. …

Xamarin is a cross-platform framework for building Android and iOS apps using .NET programming. The code structure of Xamarin Android and Xamarin iOS is different. For developers who want to construct UI for Android and iOS from a single codebase, Xamarin.Forms is the only solution. This article shares how to implement camera barcode scanner apps for both Android and iOS platforms using Xamarin.Forms. Since camera logic is platform-dependent, a bunch of platform-specific code is required.

Getting Started with Xamarin.Forms

Setting Up Environment on Windows 10

Run Visual Studio Installer and select Mobile development with .NET

The accuracy of optical character recognition (OCR) is sensitive to text orientation. If a text image file is rotated by 90°, 180° or 270°, and there is no EXIF information, it would be challenging to doing text recognition. In case of text around barcode, the combination of Dynamsoft Label Recognition(DLR) and Dynamsoft Barcode Reader(DBR) is proposed as an ideal OCR solution. This article will demonstrate how to build a C++ command-line application to recognize a rotated barcode label (e.g. price tag) which is hardly recognized by general open source or commercial OCR SDK.

Requirements

• Dynamsoft Barcode Reader SDK and DBR 30-day…

Dynamsoft provides Java Barcode SDKs for both mobile and desktop development. The mobile edition is distributed as an Android AAR package, and the desktop edition is distributed as a JAR package. This article aims to help developers who want to build desktop or server-side barcode scanner applications in Java or Kotlin.

Installing Dynamsoft Barcode Reader via Gradle

To get Dynamsoft Barcode Reader, you can either download the SDK directly or configure the Maven URL for auto-build tools. I recommend using Gradle to create a Java or Kotlin barcode scanner project.

Steps

Create a new Gradle project:

$ gradle init
 Select type of project to generate:
 1…