[Fix] system theme initial, toggle theme first time

composeApp/src/androidMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/AppStorage.android.kt

@@ -24,6 +24,7 @@ class AppStoragePlatform(context: Context) : AppStorage {
 
     @Suppress("UNCHECKED_CAST")
     override fun <T : Any> load(key: String, type: KClass<T>): T? {
+        if (!prefs.contains(key)) return null
         return when (type) {
             String::class -> prefs.getString(key, null) as T?
             Int::class -> prefs.getInt(key, -1) as T?

composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/App.kt

@@ -10,8 +10,9 @@ import org.koin.compose.viewmodel.koinViewModel
 
 @Composable
 @Preview
-fun App() {
-    val viewModel = koinViewModel<AppViewModel>()
+fun App(
+    viewModel: AppViewModel = koinViewModel()
+) {
     val savedTheme = viewModel.isDarkTheme.value
     val isDarkTheme = savedTheme ?: isSystemInDarkTheme()
     val isLoggedIn = viewModel.isLoggedIn()

composeApp/src/commonMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/screens/MainScreen.kt

@@ -12,6 +12,7 @@ import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
+import androidx.compose.runtime.saveable.rememberSaveable
 import androidx.compose.ui.Modifier
 import androidx.navigation.NavType
 import androidx.navigation.compose.NavHost
@@ -62,6 +63,7 @@ fun MainScreen(
     val navBackStackEntry by navController.currentBackStackEntryAsState()
     val currentDestination = navBackStackEntry?.destination
     val noNavbar = listOf(AuthDestination.route, CommunicationDestination.route)
+    val startRoute = rememberSaveable { if (isLoggedIn) HomeDestination.route else AuthDestination.route }
 
     val sessionExpired by viewModel.sessionExpired
 
@@ -122,7 +124,7 @@ fun MainScreen(
     ) { innerPadding ->
         NavHost(
             navController = navController,
-            startDestination = if (isLoggedIn) HomeDestination.route else AuthDestination.route,
+            startDestination = startRoute,
             modifier = Modifier.padding(innerPadding).fillMaxSize()
         ) {
             composable(AuthDestination.route) { LoginScreen(navController) }

composeApp/src/iosMain/kotlin/com/digitoolsolutions/app/torquevaultkmp/AppStorage.ios.kt

@@ -25,6 +25,7 @@ class AppStoragePlatform : AppStorage {
 
     @Suppress("UNCHECKED_CAST")
     override fun <T : Any> load(key: String, type: KClass<T>): T? {
+        if (defaults.objectForKey(key) == null) return null
         return when (type) {
             String::class -> defaults.stringForKey(key) as T?
             Int::class -> defaults.integerForKey(key).toInt() as T?