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Fix white flash on app start (#1909)

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## Description
This fixes the brief full screen white flash when the app starts or
reloads.

I bisected to find the cause which was #1653. The newly added `Surface`
uses `MaterialTheme` to set its colors. `MaterialTheme` defaults to a
generic _light_ color scheme. So this PR applies the Wholphin's default
purple theme, which will then be overridden once the app preferences are
loaded.

### Related issues
Mentioned in
https://github.com/damontecres/Wholphin/issues/1576#issuecomment-5376373039

### Testing
Used emulator with "Don't keep activities" and repeatedly opened &
closed the app to see if the white flash visually occurred

## Screenshots
N/A

## AI or LLM usage
None
This commit is contained in:
Damontecres 2026-08-26 21:46:48 -04:00 • committed by GitHub
parent f91bca18ff
commit 786b95a393
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GPG key ID: B5690EEEBB952194
1 changed files with 48 additions and 48 deletions
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96
app/src/main/java/com/github/damontecres/wholphin/MainActivity.kt
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@ -28,6 +28,7 @@ import androidx.lifecycle.lifecycleScope
import androidx.lifecycle.viewModelScope import androidx.lifecycle.viewModelScope
import androidx.navigation3.runtime.NavBackStack import androidx.navigation3.runtime.NavBackStack
import androidx.tv.material3.ExperimentalTvMaterial3Api import androidx.tv.material3.ExperimentalTvMaterial3Api
import androidx.tv.material3.MaterialTheme
import androidx.tv.material3.Surface import androidx.tv.material3.Surface
import com.github.damontecres.wholphin.data.ServerRepository import com.github.damontecres.wholphin.data.ServerRepository
import com.github.damontecres.wholphin.preferences.AppPreferences import com.github.damontecres.wholphin.preferences.AppPreferences
@ -62,6 +63,7 @@ import com.github.damontecres.wholphin.ui.nav.Destination
import com.github.damontecres.wholphin.ui.playback.PlayExternalViewModel import com.github.damontecres.wholphin.ui.playback.PlayExternalViewModel
import com.github.damontecres.wholphin.ui.showToast import com.github.damontecres.wholphin.ui.showToast
import com.github.damontecres.wholphin.ui.theme.WholphinTheme import com.github.damontecres.wholphin.ui.theme.WholphinTheme
import com.github.damontecres.wholphin.ui.theme.colors.PurpleThemeColors
import com.github.damontecres.wholphin.ui.util.ProvideLocalClock import com.github.damontecres.wholphin.ui.util.ProvideLocalClock
import com.github.damontecres.wholphin.util.DebugLogTree import com.github.damontecres.wholphin.util.DebugLogTree
import com.github.damontecres.wholphin.util.ExceptionHandler import com.github.damontecres.wholphin.util.ExceptionHandler
@ -228,56 +230,54 @@ class MainActivity : AppCompatActivity() {
viewModel.appStart(intent) viewModel.appStart(intent)
setContent { setContent {
Surface( MaterialTheme(colorScheme = PurpleThemeColors.darkScheme) {
Modifier Surface(Modifier.fillMaxSize()) {
.fillMaxSize() val userPreferences by userPreferencesService.flow.collectAsState(null)
.background(Color.Black), if (userPreferences == null) {
) { // Show loading page if it is taking a while to get app preferences
val userPreferences by userPreferencesService.flow.collectAsState(null) var showLoading by remember { mutableStateOf(false) }
if (userPreferences == null) { LaunchedEffect(Unit) {
// Show loading page if it is taking a while to get app preferences delay(500.milliseconds)
var showLoading by remember { mutableStateOf(false) } Timber.i("Showing loading page")
LaunchedEffect(Unit) { showLoading = true
delay(500.milliseconds)
Timber.i("Showing loading page")
showLoading = true
}
if (showLoading) {
Box(
modifier =
Modifier
.fillMaxSize()
.background(Color.Black),
) {
LoadingPage()
} }
} if (showLoading) {
} else { Box(
userPreferences?.let { userPreferences -> modifier =
val appPreferences = userPreferences.appPreferences Modifier
CoilConfig( .fillMaxSize()
prefs = appPreferences, .background(Color.Black),
okHttpClient = okHttpClient,
debugLogging = false,
enableCache = true,
)
LaunchedEffect(appPreferences.debugLogging) {
DebugLogTree.INSTANCE.enabled = appPreferences.debugLogging
}
CompositionLocalProvider(LocalImageUrlService provides imageUrlService) {
WholphinTheme(
true,
appThemeColors = appPreferences.interfacePreferences.appThemeColors,
) { ) {
ProvideLocalClock { LoadingPage()
MainContent( }
backStack = setupNavigationManager.backStack, }
navigationManager = navigationManager, } else {
userPreferences = userPreferences, userPreferences?.let { userPreferences ->
backdropService = backdropService, val appPreferences = userPreferences.appPreferences
screensaverService = screensaverService, CoilConfig(
modifier = Modifier.fillMaxSize(), prefs = appPreferences,
) okHttpClient = okHttpClient,
debugLogging = false,
enableCache = true,
)
LaunchedEffect(appPreferences.debugLogging) {
DebugLogTree.INSTANCE.enabled = appPreferences.debugLogging
}
CompositionLocalProvider(LocalImageUrlService provides imageUrlService) {
WholphinTheme(
true,
appThemeColors = appPreferences.interfacePreferences.appThemeColors,
) {
ProvideLocalClock {
MainContent(
backStack = setupNavigationManager.backStack,
navigationManager = navigationManager,
userPreferences = userPreferences,
backdropService = backdropService,
screensaverService = screensaverService,
modifier = Modifier.fillMaxSize(),
)
}
} }
} }
} }