Advanced Lazy List with Dark Mode

This project demonstrates an advanced lazy list in Jetpack Compose, designed for high performance, clean architecture, and modern UI practices. The app features optimized state handling, dynamic content interactions, and dark mode support, ensuring a smooth and visually appealing user experience.

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Features

• Dynamic Product List
  Products are displayed in a dynamic, scrollable list with properties such as name, description, cost, image, priority, and selection state.

• Dark Mode Support
  Full compatibility with light and dark themes using Material3's color schemes for an aesthetically pleasing UI.

• Scroll-to-Top Button
  A floating button that appears when the user scrolls down, implemented with smooth animations for visibility transitions.

  State Hoisting

This project implements state hoisting to improve reusability, testability, and separation of concerns.

• Why State Hoisting?
  • Keeps composables stateless, making them easier to test and reuse across different parts of the app.
  • Moves the state and business logic out of the UI layer, ensuring a clean architecture.
  • Simplifies managing shared state between parent and child composables by centralizing state updates in a single location.

By hoisting state, the app achieves a more modular and maintainable codebase, adhering to Compose best practices.

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Performance Optimizations

1. Item Visibility Calculation with derivedStateOf

   • Used derivedStateOf to dynamically track item visibility and trigger animations like showing or hiding the scroll-to-top button.
   • Avoids expensive recompositions by recalculating visibility states only when necessary.

2. Efficient Lazy List Handling with key

   • Each item in the LazyColumn is uniquely identified using a key. This improves performance by preventing unnecessary re-renders and preserving scroll position across updates.

3. Optimized State Management

   • Avoided complex calculations like sortedBy directly in composables to reduce recomposition overhead. Sorting and other data transformations are handled outside of the UI layer.

4. No Non-UI Logic in Composables

   • Ensured all business logic resides outside composables for a cleaner architecture and better separation of concerns.

5. Efficient Usage of remember

   • Used remember to cache values and avoid repeated recalculations, enhancing UI responsiveness.

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Screenshots

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Light Mode	Dark Mode

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Demo GIF

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How to Run

1. Clone the repository:

   git clone https://github.com/your-username/AdvancedLazyList-DarkMode.git