我正在将应用程序从Expo SDK 38更新到Expo SDK 39。一切都很顺利，在世博客户端运行得很完美。
当我在提交之前构建一个独立的应用程序进行测试时，包括以下内容：
expo build:android -t apk --release-channel some-build-release
我打开应用程序时没有显示任何资产。我的自定义字体在同一个assets目录中使用正确。
我使用以下app.json:将资产直接绑定到二进制文件中
"assetBundlePatterns": [
"assets/**/*"
],
我的所有资产都在资产文件夹中。当我在SDK 38上构建一个独立的应用程序时，一切都很完美。资产显示没有问题。感谢您的帮助。
以下是我的package.json，以防有帮助：
{
"main": "node_modules/expo/AppEntry.js",
"scripts": {
...
},
"dependencies": {
"@react-native-community/async-storage": "~1.12.0",
"@react-native-community/datetimepicker": "^3.0.4",
"@react-native-community/masked-view": "0.1.10",
"@react-native-community/netinfo": "5.9.6",
"@react-native-community/slider": "3.0.3",
"@react-navigation/bottom-tabs": "^5.10.1",
"@react-navigation/drawer": "^5.10.1",
"@react-navigation/material-top-tabs": "^5.3.1",
"@react-navigation/native": "^5.8.1",
"@react-navigation/stack": "^5.11.0",
"@types/expo": "^32.0.13",
"@types/react-native": "~0.63.2",
"axios": "^0.19.2",
"convert-time": "^0.3.0",
"expo": "^39.0.0",
"expo-application": "~2.3.0",
"expo-av": "~8.6.0",
"expo-blur": "~8.2.0",
"expo-camera": "~9.0.0",
"expo-constants": "~9.2.0",
"expo-device": "~2.3.0",
"expo-file-system": "~9.2.0",
"expo-firebase-analytics": "~2.5.0",
"expo-font": "~8.3.0",
"expo-image-picker": "~9.1.0",
"expo-linear-gradient": "~8.3.0",
"expo-localization": "~9.0.0",
"expo-location": "~9.0.0",
"expo-media-library": "~9.2.1",
"expo-network": "~2.3.0",
"expo-notifications": "~0.7.2",
"expo-permissions": "~9.3.0",
"expo-status-bar": "~1.0.2",
"expo-video-player": "^1.5.8",
"lodash": "^4.17.19",
"moment": "^2.24.0",
"moment-timezone": "^0.5.31",
"react": "16.13.1",
"react-devtools": "^3.6.3",
"react-dom": "16.13.1",
"react-native": "https://github.com/expo/react-native/archive/sdk-39.0.3.tar.gz",
"react-native-animatable": "^1.3.3",
"react-native-collapsible": "^1.5.2",
"react-native-elements": "^2.1.0",
"react-native-expo-image-cache": "^4.1.0",
"react-native-geocoding": "^0.4.0",
"react-native-gesture-handler": "~1.7.0",
"react-native-google-places-autocomplete": "^1.8.0",
"react-native-hyperlink": "0.0.19",
"react-native-keyboard-accessory": "^0.1.10",
"react-native-keyboard-aware-scroll-view": "^0.9.1",
"react-native-maps": "0.27.1",
"react-native-modal": "^11.5.6",
"react-native-modal-datetime-picker": "^8.9.0",
"react-native-paper": "^3.10.1",
"react-native-reanimated": "~1.13.0",
"react-native-safe-area-context": "3.1.4",
"react-native-screens": "~2.10.1",
"react-native-snap-carousel": "^3.9.1",
"react-native-svg": "12.1.0",
"react-native-tab-view": "^2.15.2",
"react-native-web": "~0.13.7",
"react-navigation-header-buttons": "^6.0.0",
"react-redux": "^7.1.1",
"redux": "^4.0.4",
"redux-devtools-extension": "^2.13.8",
"redux-saga": "^1.1.3",
"redux-thunk": "^2.3.0",
"sentry-expo": "^3.0.3",
"tslib": "^2.0.1",
"validator": "^12.1.0"
},
"devDependencies": {
"@typescript-eslint/eslint-plugin": "^3.9.0",
"@typescript-eslint/parser": "^3.9.0",
"babel-eslint": "^10.1.0",
"babel-preset-expo": "^8.3.0",
"eslint": "^7.7.0",
"eslint-config-airbnb": "^18.2.0",
"eslint-plugin-import": "^2.22.0",
"eslint-plugin-jsx-a11y": "^6.3.1",
"eslint-plugin-react": "^7.20.6",
"eslint-plugin-react-hooks": "^4.0.8",
"typescript": "~3.9.2"
},
"private": true
}
这不是构建过程的问题，而是我代码中其他资产保存到documentDirectory的另一部分的问题。
我最初是将资产(如一个小视频(保存到根documentDirectory。我有另一个过程，该过程将基于一系列"；应该有什么"；。
与第38届世博会相比发生了变化->39其中二进制资产现在被直接绑定到documentDirectory的根，所以当我的应用程序加载时，它会删除所有绑定的资产。
简单的解决方法是将我在应用程序启动时加载的这些其他资产存储到documentDirectory(在我的案例中是documentDirectory/assetCache(中的一个子目录中。