WhatsAppHomeScreen_pager.kt

HorizontalPager(
      pageCount = 3,
      beyondBoundsPageCount = 3,
      state = viewPagerState,
      modifier = Modifier
            .background(MaterialTheme.colors.background)
            .fillMaxSize(),
) { page ->
       when (page) {
            0 -> ChatListScreen()
            1 -> StatusListScreen()
            2 -> CallsListScreen()
        }
}