How to inject class into MainActivity with Koin - kotlin

Question

I want to create a Splash screen and show it as long as the authentication state of the user gets determined. I have a global singleton called AuthStateController which holds my state and some extra functions.
But because the installSplashScreen function is outside of a composable I can't use Koin to inject the AuthStateController class to get access to my loading state.
Below is my MainActivity with all my Koin modules. And the installSplashScreen function.
class MainActivity : ComponentActivity() {
// not allowed because outside of Composable
private val authStateController: AuthStateController by inject()
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
startKoin {
androidLogger(if (BuildConfig.DEBUG) Level.ERROR else Level.NONE)
androidContext(this#MainActivity)
modules(listOf(appModule, networkModule, viewModelModule, interactorsModule))
}
installSplashScreen().apply {
setKeepVisibleCondition {
// need AuthStateController instance to determine loading state
authStateController.state.value.isLoading
}
}
setContent {
M3Theme {
SetupNavGraph()
}
}
}
}
}
This is the Koin module that provides my AuthStateController class:
val appModule = module {
single { AuthStateController(get()) }
}
And this is my AuthStateController class which holds my state and some extra functions:
class AuthStateController(
private val getMeInterceptor: GetMeInterceptor
) {
val state: MutableState<AuthState> = mutableStateOf(AuthState())
fun fetchMe() {
val me = getMeInterceptor.execute().collect(CoroutineScope(Dispatchers.IO)) { dataState ->
dataState.data?.let {
state.value =
state.value.copy(profile = it, isAuthenticated = true, isLoading = false)
}
}
}
init {
val token = settings.getString(Constants.AUTH_TOKEN)
if (token.isNotBlank()) {
fetchMe()
state.value = state.value.copy(authToken = token)
}
}
}
How can I get access to the singleton created with Koin inside the MainActivity and use it inside the installSplashScreen function?
Edit
Android Manifest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="com.example.sessions_clean.android">
<uses-permission android:name="android.permission.INTERNET" />
<application
// app crashes when adding line below
android:name=".MainApplication"
android:allowBackup="false"
android:supportsRtl="true"
android:theme="#style/Theme.App.Starting"
android:usesCleartextTraffic="true">
<activity
android:name=".MainActivity"
android:exported="true"
android:theme="#style/Theme.App.Starting">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
When I add android:name to the already existing application tag the App crashes instantly.
But when I create a new application tag for the new MainApplication I get errors in the IDE like Attribute android:allowBackup is not allowed here

Answer 1

I think you can startKoin inside the Application
MainApplication.kt
class MainApplication : Application() {
override fun onCreate() {
super.onCreate()
startKoin {
...
}
}
}
AndroidManifest.xml
<manifest ...>
<application
android:name=".MainApplication"
...>
...
</application>
</manifest>