The Health BMI Calculator App is an Android application that combines App theme and Button events, built with SharedPreferences. The project follows a clean app architecture where UI, logic, and data stay separated, making it easy to test, extend, and present. It showcases practical Android techniques while producing a working, demo-ready app.
Users struggle to do this task conveniently from their phone because existing solutions are complex, slow, or missing. Without an Android app built on Button events and SharedPreferences, there is no simple, mobile-friendly way to manage the workflow with clear results.
This project applies Android development techniques through App theme, orchestrated with SharedPreferences and Button events. The app is designed for usability and performance, with smooth navigation, validation, and error handling. It produces consistent, reusable results and can be adapted to related tasks with minimal changes.
SharedPreferences
Java / Kotlin
Android Studio
Material Design
Room / Firebase
XML layouts
Clean Android app with App theme and Button events
Mobile friendly UI with navigation and validation
Local data persistence and offline support
Clear feedback, error handling, and states
Reusable components for related features
Tested, maintainable Android code
The project follows an Android app architecture: the view layer handles UI and navigation through App theme; the logic layer manages app behaviour with SharedPreferences and Button events; and the data layer stores information via Settings screen. Shared utilities, validators, and themes support all layers, keeping the app robust and easy to extend.
Set up the Android project, Gradle, and dependencies.
Build the UI and navigation flow with App theme.
Implement the app logic using SharedPreferences and Button events.
Add the data layer and persistence via Settings screen.
Wire up end-to-end flows with validation and error handling.
Test on emulator and device, then refine features.
Build the APK, document the project, and prepare the demo and viva report.
Build complete Android applications
Apply Designing XML layouts and Handling button events
Design mobile UI and manage app state
Work with Android databases and services
Present and defend a complete Android project in viva
Add a cloud backend with Firebase
Add user accounts and synchronization
Publish the app to the Play Store
Add analytics and push notifications
The Health BMI Calculator App delivers a complete Android workflow — from UI and navigation to data and logic. It is practical, modern, and easy to explain, making it an excellent final year project that demonstrates in-demand Android development skills.
