Smart Library Android App with Barcode

College libraries still run on registers and long queues at the issue desk. Students forget due dates, fines are worked out by hand and nobody knows when a popular book will come back. Library management Android project with barcode – StackLib – moves the whole circulation desk to the phone: the camera reads the book's barcode, the app checks the rules, and the issue or return is saved in a second.

How it works

• The student logs in and sees their "shelf": every borrowed book as a coloured spine with a due-date ribbon.
• Scan a book's barcode (or type its accession number) to issue or return it; the due date appears as a stamp.
• Late returns get an automatic fine (Rs 2 per day, capped at Rs 200), shown with a clear breakdown.
• If no copy is free, the student joins a reservation queue and is told when the book is ready for pickup.
• A daily background reminder warns 2 days before the due date, on the due day and when a book is overdue.
• At the desk, the librarian scans the student's member card, then the book, and collects fines with a PDF receipt.
• Gemini AI fills book details from the ISBN, suggests books to read and writes a short reading insight, with offline fallbacks.

Users

• Student: catalogue search, self issue/return by barcode, my books, renew, reservations, reminders, reading stats and badges, digital library card.
• Librarian: desk dashboard, issue/return desk, members, fine collection with receipts, add books with ISBN lookup, reservation queue, reports with PDF export.
• Admin (web): books and barcode labels, categories, members and librarians, issues, fines, reservations, notices, reports, settings.

Highlights

• 3 roles, 23 app screens, 33 APIs, 17 admin panel files, 13 database tables
• CameraX + ML Kit barcode scanning for book barcodes and member cards
• Automatic fines, renew limits, first-in-queue reservations and borrowing rules
• WorkManager due-date reminders and PDF receipts, labels and reports
• Validations on every form (app + server), hashed passwords, token login, prepared SQL
• Sample data with 40 real titles, 130 copies, 24 students and ready demo logins

What you get

• Complete Android Studio source code (Java) and PHP admin panel + APIs
• MySQL database file with sample data
• Project report (56 pages) with DFD, ER, UML and all diagrams
• Project abstract, project explanation with viva questions, setup guide
• Setup help to run the project on your laptop

Who can use this project

Suitable as a final year project for BE / B.Tech (Computer, IT, E&TC), MCA, BCA and Diploma students looking for an Android project with source code, documentation and a report. A good choice if you want a database-driven library management system that also shows barcode scanning, background work and AI features.

Frequently asked questions

• Can I test the barcode scan without real library books? Yes. The admin panel prints barcode labels for every copy; print one page and scan it with the phone.
• Does it need an internet connection? Only for the Gemini AI features. Issue, return, fines and reservations work on your local Wi-Fi with XAMPP.
• How are fines calculated? Days late × Rs 2 per day, capped at Rs 200. Both values can be changed in admin settings.
• Can two students reserve the same book? Yes, they join a queue and the first student in line gets the next returned copy.