demo.kt

@Composable
fun DemoScreen() {
    val navController = rememberNavController()
    val graph = remember(navController) {
        NavigationGraph(navController)
    }

    NavHost(
        navController = navController,
        startDestination = "home"
    ) {
        composable(
            route = "home",
            arguments = listOf()
        ) { backStackEntry ->
            Box(modifier = Modifier.fillMaxSize()) {
                Column(
                    modifier = Modifier.align(Alignment.Center),
                    horizontalAlignment = Alignment.CenterHorizontally
                ) {
                    Text(text = "This is home page", textAlign = TextAlign.Center)
                    Spacer(modifier = Modifier.height(20.dp))
                    Button(onClick = { graph.openUserPage(UUID.randomUUID().toString(), false) }) {
                        Text(text = "Go to user page", textAlign = TextAlign.Center)
                    }
                }
            }
        }
    }
}