我升级到 expo 34.0.3 和相关的依赖项如下
"dependencies": {
"@expo/samples": "3.0.3",
"@expo/vector-icons": "^10.0.3",
"add": "^2.0.6",
"expo": "^34.0.3",
"expo-asset": "^5.0.1",
"expo-font": "~6.0.1",
"moment": "^2.24.0",
"react": "16.8.3",
"react-native": "https://github.com/expo/react-native/archive/sdk-34.0.0.tar.gz",
"react-native-gesture-handler": "^1.3.0",
"react-native-modal": "^11.3.1",
"react-native-modal-datetime-picker": "^7.5.0",
"react-native-snackbar-component": "^1.1.0",
"react-navigation": "^3.11.1",
"react-redux": "^7.1.0",
"redux": "^4.0.4",
"redux-persist": "^5.10.0"
},
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我的 App.js 大概像这样正确地预加载了字体
import * as Font from 'expo-font';
import * as Icon from '@expo/vector-icons';
.........
_loadResourcesAsync = async () => {
return Promise.all([
Font.loadAsync({
...Icon.Ionicons.font,
...Icon.MaterialCommunityIcons.font,
}),
]);
};
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现在要明确一点,这段代码在世博升级之前工作得很好。此问题在 Android 和 iOS 设备上都存在。
首先确保使用正确的路径加载脚本,如下所示:
// Load fonts
await Font.loadAsync({
...Ionicons.font,
"space-mono": require("../assets/fonts/SpaceMono-Regular.ttf"),
ionicons: require("@expo/vector-icons/build/vendor/react-native-vector-icons/Fonts/Ionicons.ttf"),
anticon: require("@expo/vector-icons/build/vendor/react-native-vector-icons/Fonts/AntDesign.ttf"),
"material-community": require("@expo/vector-icons/build/vendor/react-native-vector-icons/Fonts/MaterialCommunityIcons.ttf"),
});Run Code Online (Sandbox Code Playgroud)
以下步骤修复了此问题(lang:typescript):
npm installexpo installexpo start -c以清除缓存并启动应用程序我能够通过删除yarn.lock(我正在使用yarn)并在升级后删除node_modules来解决这个问题。然后再次运行yarn install。
在此过程中,我还升级了 expo cli、node 并使用了 expo_codemod 来处理对我的代码的任何与升级相关的更改。我还必须“展示安装”像 react-native-gesture-handler 一样移出的软件包
我认为对我来说关键是删除锁定文件并通过 expo start -c 清除缓存
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