Open Source Android QR Code Scanners

Open QR Code is an open-source cross-platform application developed using Flutter as main framework used to build the application, in common C, C++, Dart, Skia (a 2D rendering engine), and Impeller (the default rendering engine on iOS), Java, Kotlin. Open QR Code allows users to generate and scan QR codes effortlessly. The app is available on Android, Windows, and the Web. Users can generate QR codes from any text input, save them to their gallery, share them directly from the app, and scan QR codes to retrieve encoded information. Whether you're on Android, Windows, or the Web, you can create and share QR codes or scan them with a single click.

Generate QR codes, scan QR codes, and identify QR codes for pictures. The modification range is large, and there is no plan to submit a PR for the barcodescanner library. Various scan frames can be customized. Customizable full-screen scan or only recognize the code within the scan frame area. The format of the code to be recognized can be customized (see the onClick method in TestScanActivity for detailed usage). Can control the flash, convenient to use at night. Can be set to scan with the front camera. Two-finger zoom preview. Can monitor the ambient brightness and prompt the user to turn on and off the flash. Automatically zoom in when a smaller code is recognized. ZXing generates a QR code with customizable color and logo. ZXing generates one-dimensional codes. ZXing scan barcode, QR code. ZXing recognizes barcode and QR code images in the gallery.

Bar and QR Code Reader Android App