Launch screen

Hold the native launch screen until your app is ready.

One.LaunchScreen controls the native launch screen during app startup. One prebuild keeps the iOS storyboard and Android system splash visible until React Native draws its first content. An Expo-prebuilt app needs holdLaunchScreen: true in vxrn/expo-plugin for the same behavior.

Call preventAutoHide() at module evaluation time, before the first render, when startup work needs longer. Call hide() after that work completes:

import { One } from 'one'

One.LaunchScreen.preventAutoHide()

async function startApp() {
  try {
    await loadInitialData()
  } finally {
    One.LaunchScreen.hide({ fade: true })
  }
}

void startApp()

Both methods are synchronous. hide() is safe to call again after the launch screen is gone. fade: true fades the iOS launch view instead of removing it immediately; Android uses its system splash exit animation. The hold applies only to the current app launch, so call preventAutoHide() on each cold start that needs it.

The iOS 27 simulator proof held the storyboard over a rendered React Native home screen, then used a link handled in the app’s JS startup module to call hide(). The fixture became visible, and a second hide() completed safely.