mutable-state-fav.kt

    @Composable
    fun FavoriteButton(modifier: Modifier = Modifier) {
        var favorite by remember { mutableStateOf(false) }
        var color by remember { mutableStateOf(Color.Gray) }

        color = if (favorite) {
            Color.Red
        } else {
            Color.Gray
        }

        Image(Icons.Default.Favorite,
            contentDescription = null,
            colorFilter = ColorFilter.tint(color),
            modifier = modifier
                .size(200.dp)
                .clickable {
                    favorite = true
                    if (color == Color.Red) {
                        favorite = false
                    }
                }
        )
    }