cordova-plugin-qrscanner vs phonegap-plugin-barcodescanner – which one should I use?

cordova-plugin-qrscanner is optimized for QR codes with native performance and energy efficiency, while phonegap-plugin-barcodescanner supports multiple barcode types but may have different trade-offs in speed and configuration. Choose based on your specific code format needs and platform priorities.

How to integrate cordova-plugin-qrscanner in an Electron app without using cordova-browser?

Use it as a standalone JavaScript library by requiring the QRScanner module or including the bundle script, then follow the same API methods for scanning, preview control, and error handling as in Cordova apps.

What does 'camera preview behind webview' mean in cordova-plugin-qrscanner?

It means the native camera feed is rendered directly by the OS behind the transparent Cordova webview, allowing for a seamless scanning experience without the performance limitations of HTML5 video elements, enabling full HTML/CSS/JS UI customization.

How to handle permission denied errors with cordova-plugin-qrscanner?

Check the status object for denied authorization, then use QRScanner.openSettings() to guide users to app settings if available, or implement custom fallback logic as shown in the permission management examples.

Can cordova-plugin-qrscanner scan from image files or only live camera?

It is designed exclusively for live camera scanning; for decoding QR codes from image files, you would need to integrate an additional library or plugin, as it doesn't support static image processing.

What are the limitations of cordova-plugin-qrscanner on Windows platform?

On Windows, the video preview is implemented as an HTML element rather than behind the webview, which may affect performance and require careful styling to avoid covering the preview, as noted in the platform-specific details.

Open-Awesome

cordova-plugin-qrscanner

MITJavaScript2.6.0

A fast, energy-efficient, highly-configurable QR code scanner plugin for Cordova apps and the browser.

GitHub

581 stars786 forks0 contributors

What is cordova-plugin-qrscanner?

cordova-plugin-qrscanner is a plugin for Cordova applications that enables fast and efficient QR code scanning using the device's native camera. It solves the problem of building customizable scanning interfaces within hybrid mobile apps by rendering the camera preview behind the webview, allowing full HTML/CSS/JS control over the UI. It also works as a standalone library for browser-based projects.

Target Audience

Cordova/PhoneGap developers building hybrid mobile apps that require QR code scanning functionality, as well as web developers needing a QR scanner for browser, Electron, or NW.js applications.

Value Proposition

Developers choose this plugin for its native performance, energy efficiency, and high configurability across multiple platforms. Its unique approach of placing the camera preview behind the webview enables fully customizable scanning interfaces without sacrificing speed.

Overview

A fast, energy efficient, highly-configurable QR code scanner for Cordova apps and the browser.

Use Cases

Best For

Adding QR code scanning to Cordova-based mobile wallets or payment apps
Building custom scanning interfaces with HTML/CSS/JS in hybrid apps
Creating cross-platform QR scanners for iOS, Android, and Windows
Integrating QR scanning into Electron or NW.js desktop applications
Implementing permission priming for better user onboarding
Developing energy-efficient scanners for prolonged battery life

Not Ideal For

Native mobile apps built without Cordova or webview integration
Projects requiring scanning of barcode types beyond QR codes (e.g., UPC, Data Matrix)
Applications needing server-side QR decoding without camera access
Teams wanting pre-styled, drop-in scanner components without custom UI development

Pros & Cons

Pros

Native Camera Performance

Renders the camera feed natively behind the webview, enabling high-speed scanning without HTML5 video lag, as highlighted in the native camera preview feature.

Cross-Platform Coverage

Supports iOS, Android, Windows, and browser platforms including Electron and NW.js, providing a consistent API across diverse environments.

Energy Efficiency

Optimizes battery usage by intelligently managing camera and processing resources, crucial for mobile apps with prolonged scanning needs.

Flexible Permission Management

Offers early permission priming via the prepare method and guides users to settings if denied, improving user onboarding and access handling.

Cons

QR-Only Scanning

Limited to QR code decoding only, not supporting other common barcode formats, which restricts its use in broader scanning applications.

Browser Platform Compromises

On browser platforms, lacks light support, has simplified camera selection, and appends video preview to DOM, potentially causing styling conflicts and reduced functionality.

Cordova Dependency Overhead

Requires Cordova setup and plugin installation, adding complexity for projects not already using Cordova or similar hybrid frameworks.

Frequently Asked Questions

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