Technology Overview
Kotlin & Jetpack Compose — Android Native Development
Kotlin is Google's recommended programming language for Android. Jetpack Compose is Android's modern declarative UI toolkit that replaces the XML-based View system with a concise, reactive code model.
What Is Kotlin?
Kotlin is a statically-typed, JVM-compatible programming language developed by JetBrains. Google adopted it as the preferred language for Android development in 2017. Kotlin's null safety, extension functions, coroutines, and expressive syntax make it significantly more productive than Java for Android development.
Kotlin compiles to JVM bytecode (for Android), JavaScript, and native binaries via Kotlin Multiplatform — giving it reach beyond Android to backend, web, and even shared mobile logic across iOS and Android.
What Is Jetpack Compose?
Jetpack Compose is Android's modern declarative UI framework, released as stable in 2021. It replaces the traditional Android View system (XML layouts + ViewBinding) with composable functions — reusable UI building blocks written entirely in Kotlin.
Composable Functions
UI is built from @Composable functions that describe what the screen looks like for a given state — no XML, no inflation.
State-Driven Recomposition
When state changes, Compose re-renders only the composables that depend on that state — efficient and predictable.
Material 3
First-class support for Material Design 3 (Material You) with dynamic colour theming matching the user's system theme.
Interop with Views
Compose interoperates with the existing Android View system, enabling gradual migration in existing apps.
Modern Android Architecture
The recommended Android architecture combines Jetpack Compose with these components:
ViewModel + StateFlow
UI state management that survives configuration changes and drives Compose recomposition.
Room
Type-safe SQLite ORM with Kotlin Coroutines support for local data persistence.
Hilt (Dagger)
Dependency injection framework recommended by Google for Android apps.
Kotlin Coroutines
Structured concurrency for async operations — network calls, database access, background work.
Retrofit + OkHttp
Type-safe HTTP client for consuming REST APIs with Kotlin coroutine support.
Navigation Compose
Official Jetpack navigation library adapted for Compose — handles back stack, deep links, and arguments.
When to Choose Native Android Development
Native Kotlin/Compose development is the right choice when your app requires deep Android integration (Bluetooth, NFC, Widgets, background services), needs maximum performance, or when Android is your primary market. For dual-platform apps with a fixed budget, cross-platform alternatives are worth considering.
Read: Native vs Cross-Platform — which should you choose? →Kotlin & Compose at Elmeris
Elmeris builds native Android apps with Kotlin and Jetpack Compose. We follow Google's recommended architecture guidelines, use Clean Architecture with MVVM or MVI, and deliver apps tested across a wide range of Android devices and API levels.
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