react-native-zxing-mlkit-dynamsoft

A React Native barcode scanner demo using Vision Camera, ZXing, Google ML Kit and Dynamsoft Barcode Reader.

The demo can read barcodes from cameras or from an album image.

It is mainly used for comparing the different barcode reading SDKs:

• ZXing: an open-source library with basic barcode reading features
• MLKit: a free library by Google
• Dynamsoft Barcode Reader: an enterprise-grade SDK by Dynamsoft

If the license for Dynamsoft Barcode Reader expires, you can apply for one here.

Sample APK

Comparison

Barcode Formats

ZXing	MLKit	Dynamsoft
UPC-A	UPC-A	UPC-A
UPC-E	UPC-E	UPC-E
EAN-8	EAN-8	EAN-8
EAN-13	EAN-13	EAN-13
Code 39	Code 39	Code 39
Code 93	Code 93	Code 93
ITF	ITF	ITF
Codabar	Codabar	Codabar
QR Code	QR Code	QR Code
Aztec	Aztec	Aztec
Data Matrix	Data Matrix	Data Matrix
PDF417	PDF417	PDF417
Maxicode		Maxicode
RSS-14 (GS1 DataBar)		RSS-14 (GS1 DataBar)
		Code 11
		Interleaved 2 of 5
		Industrial 2 of 5
		GS1 Composite Code
		DotCode
		Pharmacode
		Patch Code

Reading Angle

Dynamsoft Barcode Reader and MLKit can read barcodes in any angle while ZXing has a limitation. You must align the barcode with the camera to read it.

Inverted

Only Dynamsoft Barcode Reader can read inverted images in all barcode formats.

Sample Images

Type	Image	ZXing	MLKit	Dynamsoft
Inverted		×	√	√
Overexposured		×	√	√
Intermittent		×	×	√
Zero quietzone		×	×	√
Curved		×	×	√
Damaged		×	√	√
Blurry		×	×	√

Getting Started

Note: Make sure you have completed the React Native - Environment Setup instructions till "Creating a new application" step, before proceeding.

Step 1: Start the Metro Server

First, you will need to start Metro, the JavaScript bundler that ships with React Native.

To start Metro, run the following command from the root of your React Native project:

# using npm
npm start

# OR using Yarn
yarn start

Step 2: Start your Application

Let Metro Bundler run in its own terminal. Open a new terminal from the root of your React Native project. Run the following command to start your Android or iOS app:

For Android

# using npm
npm run android

# OR using Yarn
yarn android

For iOS

# using npm
npm run ios

# OR using Yarn
yarn ios

If everything is set up correctly, you should see your new app running in your Android Emulator or iOS Simulator shortly provided you have set up your emulator/simulator correctly.

This is one way to run your app — you can also run it directly from within Android Studio and Xcode respectively.

Step 3: Modifying your App

Now that you have successfully run the app, let's modify it.

1. Open App.tsx in your text editor of choice and edit some lines.

2. For Android: Press the R key twice or select "Reload" from the Developer Menu (Ctrl + M (on Window and Linux) or Cmd ⌘ + M (on macOS)) to see your changes!

   For iOS: Hit Cmd ⌘ + R in your iOS Simulator to reload the app and see your changes!

Congratulations! 🎉

You've successfully run and modified your React Native App. 🥳

Now what?

• If you want to add this new React Native code to an existing application, check out the Integration guide.
• If you're curious to learn more about React Native, check out the Introduction to React Native.

Troubleshooting

If you can't get this to work, see the Troubleshooting page.

Learn More

To learn more about React Native, take a look at the following resources:

• React Native Website - learn more about React Native.
• Getting Started - an overview of React Native and how setup your environment.
• Learn the Basics - a guided tour of the React Native basics.
• Blog - read the latest official React Native Blog posts.
• @facebook/react-native - the Open Source; GitHub repository for React Native.