FavWithClick.kt

@Composable
fun Favorite(modifier: Modifier = Modifier, viewModel: MainViewModel) {
    viewModel.setCurrentScreen(Screens.HomeScreens.Favorite)
    val clickCount by viewModel.clickCount.observeAsState()
    var click = clickCount?: 0
    Column(
        modifier = modifier.fillMaxSize(),
        verticalArrangement = Arrangement.Center,
        horizontalAlignment = Alignment.CenterHorizontally
    ) {
        Text(text = "Favorite.", style = MaterialTheme.typography.h4)
        Button(
            onClick = {
                click++
                viewModel.updateClick(click)
            }
        ) {
            Text("clicked: $click")
        }
    }
}