@capgo/capgo-skills
capacitor-splash-screen
Configures and debugs launch splash screens in Capacitor apps with @capacitor/splash-screen and @capacitor/assets - `launchAutoHide`, `SplashScreen.hide()`, `launchFadeOutDuration` (Android default changed 200 -> 0 in Capacitor 9), Android 12+ SplashScreen API theme (`Theme.SplashScreen`, `windowSplashScreenAnimatedIcon`), iOS `LaunchScreen.storyboard` + `Splash.imageset`, and Capacitor 8.5 UIScene/SceneDelegate effects (window created in code, Main.storyboard no longer supplies the root view controller). Use for white/black flash at launch, splash never hiding, cropped/tiny Android 12 icon, dark-mode splash, or regenerating icons and splash assets. Do not use for status/navigation bar color and insets (safe-area-handling), the UIScene migration itself (capacitor-uiscene-migration), or startup performance profiling (capacitor-performance).
Splash Screen in Capacitor
When to Use
TRIGGER when:
- Configuring or regenerating splash / icon assets (npx capacitor-assets generate)
- Splash never disappears, disappears too early, or flashes white/black before the web app paints
- Android 12+ shows a small cropped icon on a solid color instead of the full image
- Upgrading to Capacitor 9 and the Android fade-out animation vanished
- iOS shows a black screen after adding SceneDelegate.swift (8.5+)
Do not use:
- Status bar / navigation bar styling and edge-to-edge insets: safe-area-handling
- Migrating AppDelegate to SceneDelegate: capacitor-uiscene-migration
- Slow first paint / bundle size: capacitor-performance
- Icon requirements for store submission: capacitor-app-store
How launch works (decide what to edit)
| Phase | iOS | Android 12+ | Android <= 11 |
|---|---|---|---|
| OS launch screen (before any code) | LaunchScreen.storyboard (UILaunchStoryboardName), image Splash in Assets.xcassets/Splash.imageset | System SplashScreen API: theme AppTheme.NoActionBarLaunch with Theme.SplashScreen parent - icon + background color only | androidx.core:core-splashscreen compat, or android:background drawable |
| Plugin splash (until hide()) | Plugin overlay on the bridge view | Same system splash held via the API | Plugin ImageView / Dialog (androidSplashResourceName, androidScaleType) |
Most androidScaleType, showSpinner, splashFullScreen, layoutName, useDialog, backgroundColor options do not apply on Android 12+ launch (the OS draws it). They only affect show() and pre-12 devices.
Workflow
- Inspect: capacitor.config.* plugins.SplashScreen, android/app/src/main/res/values/styles.xml, android/variables.gradle (coreSplashScreenVersion), ios/App/App/Info.plist, ios/App/App/SceneDelegate.swift, assets/ or resources/ folder.
- Install: npm install @capacitor/splash-screen && npx cap sync.
- Assets: put sources in assets/ (icon-only.png, icon-foreground.png, icon-background.png, splash.png, splash-dark.png; splash >= 2732x2732, icons >= 1024x1024), then npm install -D @capacitor/assets && npx capacitor-assets generate (--ios, --android, --pwa to scope). Keep the logo inside the center ~1/3 so Android 12+ circular masking does not crop it.
- Hide deliberately: set launchAutoHide: false and call hide() after the first meaningful render (below).
- Android 12+ tuning if needed: references/android-12-splash.md.
- Verify (below).
Recommended config
// capacitor.config.ts
plugins: {
SplashScreen: {
launchAutoHide: false, // hide from JS when the UI is ready
launchFadeOutDuration: 200, // explicit: Capacitor 9 default on Android is 0
backgroundColor: '#ffffff', // match the first web paint to avoid a flash
},
},import { SplashScreen } from '@capacitor/splash-screen';
// after the router's first view has rendered (e.g. in a root component's mounted/useEffect)
await SplashScreen.hide(); // optional: { fadeOutDuration: 300 }Traps:
- With launchAutoHide: false, a JS crash before hide() leaves the app stuck on the splash. Add a fallback: setTimeout(() => SplashScreen.hide(), 8000).
- Default when auto-hiding is 500 ms (launchShowDuration). Long fixed durations hurt perceived startup; hide on readiness instead.
- Set <body> / root background to the splash background color, or the gap between native splash and first web paint flashes white (dark mode: black).
- Live updates (capgo-live-updates): call notifyAppReady() independently of hide(); do not gate one on the other.
Version notes
| Version | Change |
|---|---|
| 4 | Android uses the Android 12 SplashScreen API + compat library |
| 7 | SplashScreenShowOptions / SplashScreenHideOptions types removed -> ShowOptions / HideOptions |
| 8 | coreSplashScreenVersion = '1.2.0' |
| 8.5 (iOS) | UIScene template creates the window and CAPBridgeViewController in SceneDelegate; Main.storyboard no longer supplies the root view controller. LaunchScreen.storyboard is unchanged and still required. |
| 9 | Android launchFadeOutDuration default 200 -> 0 (the old default could block UI changes right after hide()). Set 200 explicitly to keep the fade. |
iOS notes (Capacitor 8.5+ scenes)
- Keep UILaunchStoryboardName = LaunchScreen in Info.plist. Apple requires a launch storyboard; deleting it causes letterboxed / wrong-size rendering.
- Do not add views or a custom view controller to Main.storyboard expecting them to show: the 8.5 SceneDelegate sets window.rootViewController = CAPBridgeViewController() in code. Put a custom CAPBridgeViewController subclass there instead.
- Black screen right after launch with a scene manifest = SceneDelegate creates no window (missing window = UIWindow(windowScene:) + makeKeyAndVisible()) or UISceneDelegateClassName points to a missing class. Fix with capacitor-uiscene-migration.
- The storyboard is cached by iOS. After changing it, delete the app from the device/simulator and reinstall.
- On resizable windows / iPad / foldables the launch storyboard must use Auto Layout constraints, not fixed frames (see capacitor-ios-resizability if present).
Verification
- npx cap sync then a clean native build (Product > Clean Build Folder in Xcode; ./gradlew clean in android/).
- Delete and reinstall the app (both platforms cache launch screens).
- Cold launch on: iOS device light + dark mode, Android 12+ device, Android <= 11 emulator (if minSdk allows; Capacitor 9 minSdk is 26).
- Confirm: no white/black flash, splash hides once the first screen is visible, fade matches the configured duration.
- Grep for leftovers:
grep -rn "launchFadeOutDuration\|launchAutoHide" capacitor.config.*
grep -n "Theme.SplashScreen\|postSplashScreenTheme" android/app/src/main/res/values/styles.xml
/usr/libexec/PlistBuddy -c "Print :UILaunchStoryboardName" ios/App/App/Info.plistError Handling
| Symptom / message | Cause | Fix |
|---|---|---|
| Splash stays forever | launchAutoHide: false and hide() never runs (JS error, wrong import, called before plugin load) | Check web console; add timeout fallback |
| Fade-out gone after Capacitor 9 upgrade (Android) | Default launchFadeOutDuration is now 0 | Set launchFadeOutDuration: 200 |
| UI changes right after hide() not visible (Android, pre-9) | 200 ms fade blocked updates | Set launchFadeOutDuration: 0 |
| Android 12+ shows small icon, image cropped | OS splash is icon-only by design | Provide adaptive icon-safe artwork; tune windowSplashScreenAnimatedIcon |
| Android 12/12L no splash from third-party launchers or Android Studio | Platform bug fixed in Android 13 | Test from the stock launcher |
| error: resource drawable/splash not found | androidSplashResourceName or styles reference a missing drawable | Regenerate assets or fix the name in both config and styles.xml |
| AAPT: error: style attribute 'attr/windowSplashScreenAnimatedIcon' not found | core-splashscreen dependency missing | Restore implementation "androidx.core:core-splashscreen:$coreSplashScreenVersion" |
| iOS black screen after 8.5 scene adoption | No window created in SceneDelegate | See iOS notes / capacitor-uiscene-migration |
| Old splash still shows on iOS | Launch screen cache | Delete app, reboot device if needed, reinstall |
Resources
- Plugin API: https://capacitorjs.com/docs/apis/splash-screen
- Splash screens and icons guide: https://capacitorjs.com/docs/guides/splash-screens-and-icons
- Updating to 9.0: https://capacitorjs.com/docs/updating/9-0
- Android SplashScreen API: https://developer.android.com/develop/ui/views/launch/splash-screen