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📱 MAD Assignment 2025 – Android Projects in Java

A complete collection of 5 Android apps built in Java, showcasing key Android concepts like unit conversion, theme switching, Lottie animation, Firebase Google Sign-In, and a photo gallery with camera access.

📁 Folder Structure

MAD_Assignment_2025/
├── Q1_UnitConverter/           # 📏 Unit Converter App
├── Q2_ThemeSettings/           # 🌙 Theme Toggle App (Dark/Light)
├── Q3_LottieAnimation/         # 🎞️ Lottie Animation Viewer
├── Q4_GoogleAuth/              # 🔐 Google Sign-In with Firebase
├── Q5_PhotoGallery/            # 📸 Camera + Gallery App
└── ui_elements/                # 📸 All screenshots and demo video

✅ Q1: Unit Converter App

  • Convert between Feet, Inches, Centimeters, Meters, Yards
  • Clean and responsive UI
  • 📲 Download APK

✅ Q2: Theme Settings App

  • Toggle between Light & Dark Mode
  • Persistent theme using SharedPreferences
  • Dynamic settings icon changes by theme
  • 📲 Download APK

✅ Q3: Lottie Animation App

  • Smooth playback of Lottie animation from res/raw
  • Uses LottieAnimationView
  • 📲 Download APK

✅ Q4: Google Sign-In App

  • Login via Google using Firebase Authentication
  • Displays user name/email after login
  • Sign-out revokes access to force account picker next time
  • 📲 Download APK

✅ Q5: Photo Gallery App

  • Capture photos using camera
  • Browse images from folder in grid view
  • Tap an image to view:
    • File name
    • Size
    • Path
    • Date
  • Delete image with confirmation
  • Option to select a whole folder and load images
  • Multi delete image functionality
  • 📲 Download APK

📦 APKs Included

Each folder contains its respective .apk file for installation and testing:

Q1_UnitConverter/UnitConverter.apk
Q2_ThemeSettings/ThemeSettings.apk
Q3_LottieAnimation/LottieAnimation.apk
Q4_GoogleAuth/GoogleAuth.apk
Q5_PhotoGallery/PhotoGallery.apk

🙋‍♂️ Author

Kritavya Patel
📧 kritavyapatel999@gmail.com
💻 GitHub: @Kritavya
📸 Instagram: @kritavya
🔗 LinkedIn: Kritavya Patel