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Code Issues Projects Packages Wiki Activity Actions

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.navigation3.runtime.NavBackStack
import androidx.tv.material3.ExperimentalTvMaterial3Api
import androidx.tv.material3.MaterialTheme
import androidx.tv.material3.Surface
import com.github.damontecres.wholphin.data.ServerRepository
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.showToast
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.util.DebugLogTree
import com.github.damontecres.wholphin.util.ExceptionHandler
@ -228,56 +230,54 @@ class MainActivity : AppCompatActivity() {
viewModel.appStart(intent)
setContent {
Surface(
Modifier
.fillMaxSize()
.background(Color.Black),
) {
val userPreferences by userPreferencesService.flow.collectAsState(null)
if (userPreferences == null) {
// Show loading page if it is taking a while to get app preferences
var showLoading by remember { mutableStateOf(false) }
LaunchedEffect(Unit) {
delay(500.milliseconds)
Timber.i("Showing loading page")
showLoading = true
}
if (showLoading) {
Box(
modifier =
Modifier
.fillMaxSize()
.background(Color.Black),
) {
LoadingPage()
MaterialTheme(colorScheme = PurpleThemeColors.darkScheme) {
Surface(Modifier.fillMaxSize()) {
val userPreferences by userPreferencesService.flow.collectAsState(null)
if (userPreferences == null) {
// Show loading page if it is taking a while to get app preferences
var showLoading by remember { mutableStateOf(false) }
LaunchedEffect(Unit) {
delay(500.milliseconds)
Timber.i("Showing loading page")
showLoading = true
}
}
} else {
userPreferences?.let { userPreferences ->
val appPreferences = userPreferences.appPreferences
CoilConfig(
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,
if (showLoading) {
Box(
modifier =
Modifier
.fillMaxSize()
.background(Color.Black),
) {
ProvideLocalClock {
MainContent(
backStack = setupNavigationManager.backStack,
navigationManager = navigationManager,
userPreferences = userPreferences,
backdropService = backdropService,
screensaverService = screensaverService,
modifier = Modifier.fillMaxSize(),
)
LoadingPage()
}
}
} else {
userPreferences?.let { userPreferences ->
val appPreferences = userPreferences.appPreferences
CoilConfig(
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(),
)
}
}
}
}