Go Grocery Serve App

# 🛒 Go Grocery – Android Grocery Delivery Application ## 1. Abstract Go Grocery is an Android-based grocery delivery application designed to simplify the process of purchasing daily grocery items. The app allows users to browse products by category, add items to a cart, and place orders dynamically. Firebase is used as a backend service to manage user authentication, real-time database operations, and cloud storage. The system reduces manual shopping effort and provides a scalable, secure, and efficient solution suitable for real-world and academic projects. --- ## 2. Working of the System The Go Grocery application follows a client–server architecture using Firebase as the backend: 1. User registers or logs in using Firebase Authentication. 2. After login, the user is redirected to the Home Screen. 3. Products are fetched dynamically from Firebase Firestore. 4. Users can browse categories such as Vegetables, Fruits, Dairy, Snacks, and Drinks. 5. Selected products are added to the cart and stored in Firestore. 6. During checkout, order details are saved in the Orders collection. 7. Admin can manage products and update order status through Firebase Console. 8. Users can view order history and profile details. --- ## 3. UML Diagrams (9 Diagrams) 1. **Use Case Diagram** – Shows interactions between User, Admin, and the system. 2. **Class Diagram** – Represents classes such as User, Product, Cart, Order, and Admin. 3. **Sequence Diagram (Login)** – Shows authentication flow. 4. **Sequence Diagram (Order Placement)** – Describes cart-to-order process. 5. **Activity Diagram (User Flow)** – Overall navigation flow of the app. 6. **Activity Diagram (Admin Flow)** – Product and order management flow. 7. **Data Flow Diagram (DFD – Level 0)** – High-level system overview. 8. **Data Flow Diagram (DFD – Level 1)** – Detailed data movement between modules. 9. **Deployment Diagram** – Shows Android app, Firebase services, and users. > 📌 UML diagrams are available in the `uml_diagrams/` folder. --- ## 4. Results (Output Screens) The application successfully performs all intended operations. Below are the result screens: * Splash Screen * Login Screen * Register Screen * Home Screen * Category Product Screen * Cart Screen * Checkout Screen * Order History Screen * Profile Screen > 📸 Screenshots are available in the `results_images/` folder. --- ## 5. Training Images Training images include UI reference designs and sample product images used during development: * App UI wireframes * Product images (Vegetables, Fruits, Dairy, Snacks) * Firebase database structure screenshots > 🖼 Images are stored in the `training_images/` folder. --- ## 6. Software Tools Used * Android Studio * Firebase Console * Git & GitHub * Google Chrome (Testing) * Figma (UI Design – Optional) --- ## 7. Code Libraries Used ### Android Libraries * androidx.appcompat * androidx.recyclerview * androidx.constraintlayout * com.google.android.material ### Firebase Libraries * Firebase Authentication * Firebase Firestore * Firebase Storage * Firebase Analytics (optional) ### Other Libraries * Glide (for image loading) * Gson (JSON parsing – optional) --- ## 📌 Conclusion Go Grocery provides a complete end-to-end grocery delivery solution using Android and Firebase. The project demonstrates real-time database handling, authentication, and dynamic UI updates, making it suitable for academic submission and practical learning.