我不断收到此错误,内容如下:
expo-app-loading 已弃用,取而代之的是 expo-splash-screen
这是 App.js 中我的启动屏幕的代码
export default function App() {
const [IsReady, SetIsReady] = useState(false);
const LoadFonts = async () => {
await useFonts();
};
if (!IsReady) {
return (
<AppLoading
startAsync={LoadFonts}
onFinish={() => SetIsReady(true)}
onError={() => {}}
/>
);
}
SplashScreen.hideAsync();
setTimeout(SplashScreen.hideAsync, 2000);
return (
<NavigationContainer style={styles.container}>
<UserStack/>
</NavigationContainer>
);
}
根据博览会文档,您应该尝试这样的操作,使用世博会启动画面 https://docs.expo.dev/versions/latest/sdk/splash-screen/
import React, { useCallback, useEffect, useState } from 'react';
import { Text, View } from 'react-native';
import Entypo from '@expo/vector-icons/Entypo';
import * as SplashScreen from 'expo-splash-screen';
import * as Font from 'expo-font';
export default function App() {
const [appIsReady, setAppIsReady] = useState(false);
useEffect(() => {
async function prepare() {
try {
// Keep the splash screen visible while we fetch resources
await SplashScreen.preventAutoHideAsync();
// Pre-load fonts, make any API calls you need to do here
await Font.loadAsync(Entypo.font);
// Artificially delay for two seconds to simulate a slow loading
// experience. Please remove this if you copy and paste the code!
await new Promise(resolve => setTimeout(resolve, 2000));
} catch (e) {
console.warn(e);
} finally {
// Tell the application to render
setAppIsReady(true);
}
}
prepare();
}, []);
const onLayoutRootView = useCallback(async () => {
if (appIsReady) {
// This tells the splash screen to hide immediately! If we call this after
// `setAppIsReady`, then we may see a blank screen while the app is
// loading its initial state and rendering its first pixels. So instead,
// we hide the splash screen once we know the root view has already
// performed layout.
await SplashScreen.hideAsync();
}
}, [appIsReady]);
if (!appIsReady) {
return null;
}
return (
<View
style={{ flex: 1, alignItems: 'center', justifyContent: 'center' }}
onLayout={onLayoutRootView}>
<Text>SplashScreen Demo! ????</Text>
<Entypo name="rocket" size={30} />
</View>
);
}
首先安装expo install expo-splash-screen
您还可以从一开始就使用 SplashScreen 配置您的应用程序
npx create-react-native-app -t with-splash-screen.
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