🎨 ThemeChanger

A sleek, modern iOS application built with SwiftUI and MVVM architecture that demonstrates real-time, dynamic theme switching (System, Light, and Dark modes) with fluid spring animations and local persistence.

📱 Screenshots

To keep the presentation clean and compact, the screenshots are presented side-by-side:

☀️ Light Mode	🌙 Dark Mode

🛠️ Tech Stack & Architecture

This project is structured around key iOS development concepts, demonstrating clean code practices and dynamic UI logic.

Technology / Pattern	Role in ThemeChanger
SwiftUI	Declarative user interface construction, modern layout containment, and state-driven styling.
MVVM Architecture	Complete separation of concern between UI components (Views/), state management logic (ViewModels/), and configurations (Models/).
Combine / ObservableObject	Reactive UI updates where views subscribe to changes in the central theme manager.
@AppStorage	Lightweight, native persistence used to save the user's selected theme across application sessions.
matchedGeometryEffect	Smooth capsule sliding transitions when switching between different theme options.
Dynamic Color Schemes	Responsive background shifts adapting directly to whether light or dark mode is selected.

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📂 Project Structure

Below is the layout of the source files in the project workspace:

ThemeChanger/
├── Models/
│   └── Theme.swift               # AppTheme enum defining titles, icons, and colors
├── ViewModels/
│   └── ThemeManager.swift        # ObservableObject storing and publishing theme state
├── Views/
│   ├── ThemeButton.swift         # Animated buttons with sliding capsule highlights
│   ├── ThemeCard.swift           # Card container adapting shadow and background
│   ├── ThemePicker.swift         # Custom styled horizontal slider selector
│   └── ThemeSelectionView.swift  # Aggregated selection panel layout with dynamic icons
├── ThemeChangerApp.swift         # Entry point injection of EnvironmentObject
└── ContentView.swift             # Root view setting the preferred color scheme

🚀 How to Run the Project

1. Clone or download this repository.
2. Open ThemeChanger.xcodeproj in Xcode (v14.0+ recommended).
3. Select a target simulator (e.g., iPhone 15 or later).
4. Press Cmd + R to run and interact with the theme changer.

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🌸 Final Thoughts

ThemeChanger is both a portfolio project and a learning journey, built to showcase my skills in Swift, SwiftUI, & MVVM architecture.

Thank you for taking the time to explore my work. I hope this project reflects my passion for building high-quality iOS and SwiftUI applications and my commitment to continuous learning and improvement.

Thanks for visiting! 💖