@Composable

fun ScaffoldWithTopBar() {

    Scaffold(

        topBar = {

            TopAppBar(

                title = {

                    Text(text = "Top App Bar")

                },

                navigationIcon = {

                    IconButton(onClick = {}) {

                        Icon(Icons.Filled.ArrowBack, "backIcon")

                    }

                },

                backgroundColor = MaterialTheme.colors.primary,

                contentColor = Color.White,

                elevation = 10.dp

            )

        }, content = {

            Column(

                modifier = Modifier

                    .fillMaxSize()

                    .background(Color(0xff8d6e63)),

                verticalArrangement = Arrangement.Center,

                horizontalAlignment = Alignment.CenterHorizontally

            ) {

​

            }

            Text(

                text = "Content of the page",

                fontSize = 30.sp,

                color = Color.White

            )

        })

}