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Android Native Java
Barcode Invoice Generator App for Android
About this project
Barcode Invoice Generator is a native Android app for small shops, cafés and food counters that need fast, paperless billing. The cashier scans product barcodes with the phone camera, and each item is added to a live cart with its name and price. Quantities can be edited inline, and a customer name is added before one tap generates a branded PDF invoice with item rows, sub-total, tax and grand total. The invoice is saved to device storage and opens straight in the user’s PDF viewer, ready to share or print.
Key Features
- Continuous live barcode scanning using the device camera
- Automatic extraction of product ID and price from each scanned code
- Duplicate-scan protection, so the same barcode is not added twice by accident
- Real-time cart list with item name, price and editable quantity
- Customer name field with input validation
- One-tap PDF invoice with company logo, date, time, serial numbers, sub-total, tax and grand total
- Unique invoice number generated for every bill
- Automatic save to a custom folder and instant open in any PDF viewer
- Fully offline, with no internet connection required
Technologies & Frameworks
JavaAndroidXConstraintLayoutRecyclerViewPdfDocument API
Integrations & APIs
CameraLocal storageFileProviderPDF viewer intent
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Farhan Saeed · Available for new projects
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