adaptive_ui_screen_size.kt

// gradle dependecies (app.gradle)
dependencies {
    implementation "androidx.compose.material3:material3:<latest_version>"
    implementation "androidx.compose.material3:material3-window-size-class:<latest_version>"
}


// Activity
class MainActivity : ComponentActivity() {

    @OptIn(ExperimentalMaterial3WindowSizeClassApi::class)
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {
            val windowSizeClass = calculateWindowSizeClass(this)
            MyApp(windowSizeClass = windowSizeClass)
        }
    }
}

@Composable
fun MyApp(windowSizeClass: WindowSizeClass) {
    when (windowSizeClass.widthSizeClass) {
        WindowWidthSizeClass.Compact -> {
            CompactUI()
        }
        else -> {
            ExpandedUI()
        }
    }
}