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Open screen chain (Compose)
class AppActivity : BaseActivity() {
private val viewModel: AppViewModel by viewModel()
override fun onNewIntent(intent: Intent?) {
super.onNewIntent(intent)
tryOpenScreenChain(intent)
}
private fun tryOpenScreenChain(intent: Intent?) {
viewModel.tryOpenScreenChain(
routes = intent?.getStringArrayListExtra(ROUTES_KEY).orEmpty().filterNotNull()
)
}
@OptIn(ExperimentalAnimationApi::class)
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
tryOpenScreenChain(intent)
setContent {
AfterglowTheme {
CompositionLocalProvider(
...
) {
AppNavGraph(navController = rememberAnimatedNavController())
}
}
}
}
@OptIn(ExperimentalAnimationApi::class)
@Composable
fun AppNavGraph(
modifier: Modifier = Modifier,
navController: NavHostController
) {
LaunchedEffect(Unit) {
viewModel.getNavigationPendingRoutes()
.onEach { routes ->
navController.popBackStack(DesktopDestination.createRoute(), inclusive = false)
routes.forEach { navController.navigate(it)}
}
.launchIn(this)
}
AnimatedNavHost(
navController = navController,
...
) {
...
}
}
companion object {
private const val ROUTES_KEY = "routes"
fun getMessagesIntent(context: Context, chatId: Long?): Intent {
return Intent(context, AppActivity::class.java).apply {
putStringArrayListExtra(
ROUTES_KEY, arrayListOf(
ChatsDestination.createRoute(ChatsDestination.TabKey.Inbox),
MessagesDestination.createRoute(chatId = chatId ?: 0L)
))
}
}
}
}
class AppViewModel(
...
): BaseViewModel() {
private val _pendingNavigationRoutes = Channel<List<String>>(
capacity = 1,
onBufferOverflow = BufferOverflow.DROP_LATEST
)
fun tryOpenScreenChain(routes: List<String>) {
if (routes.isNotEmpty()) {
viewModelScope.launch {
_pendingNavigationRoutes.send(routes)
}
}
}
fun getNavigationPendingRoutes(): Flow<List<String>> {
return _pendingNavigationRoutes.receiveAsFlow()
}
...
}
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