I'm struggling with the Jetpack Compose navigation. I'm following the NowInAndroid architecture, but I don't have the correct behaviour. I have 4 destinations in my bottomBar, one of them is a Feed-type one. In this one, it makes a call to Firebase Database to get multiple products. The problem is that everytime I change the destination (e.j -> SearchScreen) and go back to the Feed one, this (Feed) does not get restored and load all the data again. Someone know what is going on?
This is my navigateTo function ->
fun navigateToBottomBarRoute(route: String) {
val topLevelOptions = navOptions {
popUpTo(navController.graph.findStartDestination().id) {
saveState = true
}
launchSingleTop = true
restoreState = true
}
when (route) {
HomeSections.FEED.route -> navController.navigateToFeed(navOptions = topLevelOptions)
HomeSections.SEARCH.route -> navController.navigateToSearch(navOptions = topLevelOptions)
else -> {}
}
}
My Feed Screen ->
@OptIn(ExperimentalLifecycleComposeApi::class)
@Composable
fun Feed(
onProductClick: (Long, String) -> Unit,
onNavigateTo: (String) -> Unit,
modifier: Modifier = Modifier,
viewModel: FeedViewModel = hiltViewModel()
) {
val feedUiState: FeedScreenUiState by viewModel.uiState.collectAsStateWithLifecycle()
val productsCollections = getProductsCollections(feedUiState)
Feed(
feedUiState = feedUiState,
productCollections = productsCollections,
onProductClick = onProductClick,
onNavigateTo = onNavigateTo,
onProductCreate = onProductCreate,
modifier = modifier,
)
}
The getProductsCollections function returns a list of ProductCollections
fun getProductsCollections(feedUiState: FeedScreenUiState): List<ProductCollection> {
val productCollection = ArrayList<ProductCollection>()
if (feedUiState.processors is FeedUiState.Success) productCollection.add(feedUiState.processors.productCollection)
if (feedUiState.motherboards is FeedUiState.Success) productCollection.add(feedUiState.motherboards.productCollection)
/** ........ **/
return productCollection
}
I already tried to make rememberable the val productsCollections = getProductsCollections(feedUiState)
but does not even load the items.
I hope you guys can help me, thanks!!
I already tried to make rememberable the val productsCollections = getProductsCollections(feedUiState) but does not even load the items.
I want to restore the previous state of the FeedScreen and not reload everytime I change the destination in my bottomBar.