ActivityApp 🚀

A modern, high-performance Android productivity and lifestyle tracking application built entirely with Kotlin and Jetpack Compose. ActivityApp combines developer-focused note-taking, project organization, time management, and health tracking into a single, beautifully animated interface with 120Hz high refresh rate support and spring-physics interactions.

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📱 Screenshots

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✨ Key Features

📝 Developer-Focused Notes

• Code Mode: Toggle a specialized editing mode with line numbers, monospaced font, and clean code formatting.
• Live Syntax Highlighting: Real-time multi-color syntax highlighting for keywords, strings, numbers, and comments.
• Active Word Tracking: Tapping any variable or word instantly highlights all matching occurrences across the note.
• Color Themes & Pinning: Tag notes with Apple-style pastel accent swatches and pin important notes to the top.
• Staggered Grid: A fluid, Google Keep-style staggered grid with spring press feedback.

📁 Smart Folder Organization

• Custom Folders: Categorize and organize notes into distinct project spaces.
• Emoji Badging: Choose from presets or customize folder icons with live emoji badges.
• Cascade Management: Clean cascade handling when folders and notes are organized or removed.

⏱️ Advanced Timers

• Quick Presets: Rapidly create timers with predefined duration chips and activity tags (Work, Study, Workout, etc.).
• Scheduled Starts: Schedule timers to trigger automatically at specific times using device clocks.
• Active Breathing Pulse: Running timers feature an ambient breathing glow with spring-animated circular progress.

❤️ Health & Activity Dashboard

• Activity Rings: Canvas-drawn Apple-style animated progress rings for Sleep, Steps, and Hydration with spring intro physics.
• Step Counting: Hardware step sensor integration with real-time goal calibration.
• Celebration Fireworks: Reaching milestones triggers a 2D particle celebration.

🎨 Fluid Gesture-Driven UI & 120Hz Support

• Interactive Navigation Pill: Fluid drag-to-slide indicator with haptic feedback, spring snapping, and icon state morphing (filled when selected, hollow when unselected).
• Hardware RenderNode Pipeline: Full-page transitions run via pure .graphicsLayer translations for hitch-free 120fps swiping.
• Spring Sheet Settings: Smooth slide-up settings modal with theme switcher and goal preferences.

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🛠️ Tech Stack & Architecture

• Language: Kotlin 2.4.10
• UI Toolkit: Jetpack Compose with Material Design 3 (MD3)
• Architecture: MVVM (Model-View-ViewModel) with Kotlin Coroutines & StateFlow
• Local Database: Room 2.8.4 via KSP code generation
• Preferences & Serialization: SharedPreferences with Gson
• Build System: Gradle Kotlin DSL (build.gradle.kts) with Version Catalogs (gradle/libs.versions.toml)

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🚀 Getting Started

Prerequisites

• Android Studio Ladybug | 2024.2+ (or newer)
• JDK 17 or JDK 21
• Minimum SDK: API 26 (Android 8.0)
• Target SDK: API 36 (Android 15+)

Installation

1. Clone the repository:

   git clone https://github.com/weeeol/ActivityApp.git
   cd ActivityApp

2. Open the project in Android Studio.
3. Allow Gradle to sync dependencies.
4. Run on a device or emulator:

   ./gradlew installDebug

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🧪 Testing & Verification

Run local unit tests:

./gradlew test

Assemble debug build:

./gradlew assembleDebug

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📄 License

This project is licensed under the terms of the GNU General Public License v3.0 - see the LICENSE.txt file for details.