为什么使用“密封类”并在导航中制作对象？（Kotlin Jetpack 撰写）

sealed class Screen(val route: String) {
    object Home : Screen("home")
    object Player : Screen("player/{episodeUri}") {
        fun createRoute(episodeUri: String) = "player/$episodeUri"
    }
}

如果您在任何路线中都没有参数，则可以改用枚举类，如Owl Compose 示例应用程序所示：

enum class CourseTabs(
    @StringRes val title: Int,
    @DrawableRes val icon: Int,
    val route: String
) {
    MY_COURSES(R.string.my_courses, R.drawable.ic_grain, CoursesDestinations.MY_COURSES_ROUTE),
    FEATURED(R.string.featured, R.drawable.ic_featured, CoursesDestinations.FEATURED_ROUTE),
    SEARCH(R.string.search, R.drawable.ic_search, CoursesDestinations.SEARCH_COURSES_ROUTE)
}