CustomAppBar.kt

@Composable
fun CustomAppBar(drawerState: DrawerState?, title: String) {
    val coroutineScope = rememberCoroutineScope()
    
    CenterAlignedTopAppBar(
        navigationIcon = {
            if (drawerState != null) {
                IconButton(onClick = {
                    coroutineScope.launch {
                        drawerState.open()
                    }
                }) {
                    Icon(Icons.Filled.Menu, contentDescription = "")
                }
            }
                         },
        title = { Text(text = title) }
    )
}