What is Jetpack Compose?

Updated Feb 20, 2026

Short answer

Jetpack Compose is a modern declarative UI toolkit for building Android UIs using Kotlin.

Deep explanation

🔹 Declarative UI

Describe UI instead of updating it manually

🔹 Key Concepts

Composable functions
State management
Recomposition

---

🖼️

Markdown

![Jetpack Compose](https://developer.android.com/static/images/jetpack/compose/compose.png)

---

🔹 Why Compose is Modern

Less boilerplate
Faster UI development
Better state handling

Real-world example

Instagram-like UI built with Compose using LazyColumn for feeds.

Common mistakes

Mismanaging state
Over-recomposition

Follow-up questions

Compose vs XML?
What is recomposition?

More Android interview questions