I have hard time as a new guy to android and JC to understan

Question

I have hard time as a new guy to android and JC to understand why I can not get update from stateflow into my composable Code in thread

Jasmin Fajkic · Answer

This is my session manager interface ```interface SessionManager val currentProfileComplete Boolean val hasSavedProfile Boolean val session Session fun killSession fun saveProfile profile ProfileResponse suspend fun getCurrentUserId Resource lt Int gt data class Session var profile ProfileResponse var isAuthenticated Boolean ```

Jasmin Fajkic · Answer

This implementation of SessionManager ```class SessionManagerImpl Inject constructor private val credentialsManager CredentialsManager SessionManager private var session = MutableStateFlow Session null false override val session = session asStateFlow value override fun killSession credentialsManager removeCredentials session update it copy profile = null isAuthenticated = false override fun saveProfile profile ProfileResponse Log d Prof profile toString session value = Session profile isAuthenticated = true override suspend fun getCurrentUserId Resource lt Int gt return when val userId = credentialsManager getUserIdFromToken is Resource Success gt userId is Resource Error gt null else gt null override val hasSavedProfile = session profile = null override val currentProfileComplete = hasSavedProfile amp amp session profile status = null || session profile status === completed ```

Jasmin Fajkic · Answer

And in MainActivity i get SessionManager and pass it down to child but it actually never change data ``` AndroidEntryPoint class MainActivity ComponentActivity Inject lateinit var sessionManager SessionManager override fun onCreate savedInstanceState Bundle WindowCompat setDecorFitsSystemWindows window false super onCreate savedInstanceState val intent = Intent FirebaseApp initializeApp this Firebase dynamicLinks getDynamicLink intent addOnSuccessListener this pendingDynamicLinkData PendingDynamicLinkData gt if pendingDynamicLinkData = null intent data = pendingDynamicLinkData link this startActivity intent addOnFailureListener this e gt Log w TAG getDynamicLink onFailure e setContent PhoenixTheme BottomTabView sessionManager ```

Jasmin Fajkic · Answer

what I am doing wrong disappointed

Stylianos Gakis · Answer

`override val session = session asStateFlow value` I think it s there You re assigning the initial value of ` session` into `session` and that s it you never change that

Jasmin Fajkic · Answer

Hmm probably Any idea how to solve this properly

Stylianos Gakis · Answer

Yeah don t call value on it and expose it as a StateFlow instead and convert it into state in your composable instead with collectAsState WithLifecycle

Stylianos Gakis · Answer

Try that for now and see if it fixes the problem and you can go from there

Jasmin Fajkic · Answer

So initially to do this ```interface SessionManager val currentProfileComplete Boolean val hasSavedProfile Boolean val session StateFlow lt Session gt fun killSession fun saveProfile profile ProfileResponse suspend fun getCurrentUserId Resource lt Int gt data class Session var profile ProfileResponse var isAuthenticated Boolean ```

Jasmin Fajkic · Answer

Same disappointed I get initial value always

Stylianos Gakis · Answer

How are you collecting the value

Jasmin Fajkic · Answer

```val session = sessionManager session collectAsState ```

Stylianos Gakis · Answer

Try debugging by hardcoding your session to be smth like `session =` `flow while true emit smth delay 500 emit smthElse delay 500 stateIn ` And see if this updates your UI

Jasmin Fajkic · Answer

this is thing i do not get it My loginviewmodel get in constructor sessionmanager and when i access session manager through viewmodel it works when i access it through composable params it does not work ``` Composable fun Login navigateToMain gt Unit sessionManager SessionManager val loginViewModel LoginViewModel = hiltViewModel val loginState = loginViewModel loginState collectAsState value val session = sessionManager session collectAsState val session1 = loginViewModel sessionManager session collectAsState val coroutineScope = rememberCoroutineScope LaunchedEffect session value isAuthenticated if session value isAuthenticated navigateToMain Log d ISAUTH1 session value toString Log d ISAUTH2 session1 value toString ```

Jasmin Fajkic · Answer

so second one works fine first does not react on update disappointed

Jasmin Fajkic · Answer

I am thinking that in this case even my session manager is Singleton i get two different SessionManagers in LoginViewModel and MainActivity and because from LoginViewModel I am doing some updates of session it works there and not from MainActivity < Stylianos Gakis> what you think

Jasmin Fajkic · Answer

Here is how I set session manager with DI ``` Module InstallIn SingletonComponent class object SessionManagerModule Provides fun providesSessionManager credentialsManager CredentialsManager SessionManager = SessionManagerImpl credentialsManager ```

Jasmin Fajkic · Answer

Just put this and all works fine ``` Provides Singleton fun providesSessionManager credentialsManager CredentialsManager SessionManager = SessionManagerImpl credentialsManager ```

Stylianos Gakis · Answer

Yeap without the singleton annotation you would indeed not get the same instance Glad you figured it out after all relaxed