Jetpack Compose

Declarative UI toolkit.

What is Jetpack Compose

Compose builds Android (and desktop) UIs from composable functions that re-render when state changes.

Install

plugins { id("org.jetbrains.kotlin.plugin.compose") }

Usage

@Composable
fun Counter() {
    var n by remember { mutableStateOf(0) }
    Button(onClick = { n++ }) { Text("Count: $n") }
}

Docs

Official documentation: Jetpack Compose.