official documentation : https://developer.android.com/develop/ui/compose/documentation
Android Jetpack Compose is a modern UI toolkit introduced by Google for building native Android applications. It was introduced to simplify and enhance the UI development process by providing a declarative and reactive approach to building UIs.
The View-based UI framework uses the XML layout file and imperative code to create and manage UI components. Jetpack compose, on the other hand, uses a declarative approach where UI components are used as functions of the application state. Compose simplifies UI development, reduces boilerplate code, and provides a more intuitive way to create interactive UI.
3. What are the advantages of using Jetpack Compose over traditional view systems?
Advantages of Jetpack Compose include:
Declarative UI: Compose allows developers to describe the UI based on the current state, making the code more concise and readable.
Live previews: Compose offers real-time UI preview during development, enabling visual feedback during development.
Simplified State Management: Compose simplified state management by automatically recomposing only the affected part of UI when the state changes.
Enhance performance: Compose leverage efficient rendering and diffing algorithms, resulting in improved performance compared to the traditional view system.
A composable function is a regular Kotlin function annotated with @Composable annotation. It is the fundamental building block in Jetpack Compose and describes the appearance and behavior of the UI’s component.Composable functions are the independent of Activity or Fragment lifecycle, making them reusable and testable.
State management in Jetpack Compose resolves around the concept of mutable state. Compose provides mutableStateOf function to create the observable state. When the state changes, Jetpack Compose automatically recomposes only the affected part of the UI ensuring efficient UI updates.