Deprecated. Use expo-splash-screen directly instead:SplashScreen.preventAutoHideAsync()
andSplashScreen.hideAsync()
. Learn more.
expo-app-loading
tells expo-splash-screen
to keep the splash screen visible while the AppLoading component is mounted.Android Device | Android Emulator | iOS Device | iOS Simulator | Web |
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→
expo install expo-app-loading
If you're installing this in a bare React Native app, you should also follow these additional installation instructions.
import React from 'react'; import { Image, Text, View } from 'react-native'; import { Asset } from 'expo-asset'; import AppLoading from 'expo-app-loading'; export default class App extends React.Component { state = { isReady: false, }; render() { if (!this.state.isReady) { return ( <AppLoading startAsync={this._cacheResourcesAsync} onFinish={() => this.setState({ isReady: true })} onError={console.warn} /> ); } return ( <View style={{ flex: 1 }}> <Image source={require('./assets/snack-icon.png')} /> </View> ); } async _cacheResourcesAsync() { const images = [require('./assets/snack-icon.png')]; const cacheImages = images.map(image => { return Asset.fromModule(image).downloadAsync(); }); return Promise.all(cacheImages); } }
import AppLoading from 'expo-app-loading';
Type: Component<AppLoadingProps>
The following props are recommended, but optional. If you do not provide any props, you are
responsible for coordinating loading assets, handling errors, and updating state to unmount
the AppLoading
component.
Optional • Type: boolean
Whether to hide the native splash screen as soon as you unmount the AppLoading
component.
Auto-hiding is enabled by default. See SplashScreen module for an example.
Type: (error: Error) => void
Deprecated
If startAsync
throws an error, it is caught and passed into the function provided to onError
.
Type: () => void
Deprecated
(Required if you provide startAsync). Called when startAsync
resolves or rejects.
This should be used to set state and unmount the AppLoading
component.
Type: () => Promise<void>
Deprecated
A function that returns a Promise
, and the Promise
should fulfil when the app is done
loading required data and assets. You can do this process manually if you prefer.
This is mainly for backwards compatibility and it is not recommended.
When provided, requires providing onError
prop as well.