BIT-147: Improve splash screen handling for all OS levels (#72)

app/src/main/java/com/x8bit/bitwarden/MainActivity.kt

@@ -3,6 +3,7 @@ package com.x8bit.bitwarden
 import android.os.Bundle
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
+import androidx.core.splashscreen.SplashScreen.Companion.installSplashScreen
 import com.x8bit.bitwarden.ui.platform.feature.rootnav.RootNavScreen
 import com.x8bit.bitwarden.ui.platform.theme.BitwardenTheme
 import dagger.hilt.android.AndroidEntryPoint
@@ -13,10 +14,14 @@ import dagger.hilt.android.AndroidEntryPoint
 @AndroidEntryPoint
 class MainActivity : ComponentActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
+        var shouldShowSplashScreen = true
+        installSplashScreen().setKeepOnScreenCondition { shouldShowSplashScreen }
         super.onCreate(savedInstanceState)
         setContent {
             BitwardenTheme {
-                RootNavScreen()
+                RootNavScreen(
+                    onSplashScreenRemoved = { shouldShowSplashScreen = false },
+                )
             }
         }
     }

app/src/main/java/com/x8bit/bitwarden/ui/auth/feature/login/LoginScreen.kt

@@ -4,6 +4,7 @@ import androidx.compose.foundation.background
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.padding
 import androidx.compose.material3.Button
@@ -42,6 +43,7 @@ fun LoginScreen(
         horizontalAlignment = Alignment.CenterHorizontally,
         verticalArrangement = Arrangement.spacedBy(12.dp),
         modifier = Modifier
+            .fillMaxSize()
             .background(MaterialTheme.colorScheme.background)
             .padding(horizontal = 16.dp, vertical = 32.dp),
     ) {

app/src/main/java/com/x8bit/bitwarden/ui/platform/feature/rootnav/RootNavScreen.kt

@@ -1,6 +1,7 @@
 package com.x8bit.bitwarden.ui.platform.feature.rootnav
 
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
 import androidx.hilt.navigation.compose.hiltViewModel
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
@@ -23,9 +24,15 @@ import com.x8bit.bitwarden.ui.platform.feature.vaultunlocked.vaultUnlockedDestin
 fun RootNavScreen(
     viewModel: RootNavViewModel = hiltViewModel(),
     navController: NavHostController = rememberNavController(),
+    onSplashScreenRemoved: () -> Unit = {},
 ) {
     val state by viewModel.stateFlow.collectAsStateWithLifecycle()
 
+    val isNotSplashScreen = state != RootNavState.Splash
+    LaunchedEffect(isNotSplashScreen) {
+        if (isNotSplashScreen) onSplashScreenRemoved()
+    }
+
     NavHost(
         navController = navController,
         startDestination = SPLASH_ROUTE,