Javascript 正在尝试更新到Expo SDK 34。遇到未定义的错误不是对象(计算';(expo.constants.manifest';))
我正在经历将expo更新到最新版本(34.0.0)的步骤,但我遇到了一个问题,即每当我尝试加载模拟器时,它都会错误地在我身上显示“undefined不是对象(计算“_expo.Constants.manifest”)。我一直在关注世博会的文档,知道在更新过程中可能会出现一些问题,但我找不到任何与此相关的具体内容 My package.json如下所示:Javascript 正在尝试更新到Expo SDK 34。遇到未定义的错误不是对象(计算';(expo.constants.manifest';)),javascript,react-native,expo,updating,Javascript,React Native,Expo,Updating,我正在经历将expo更新到最新版本(34.0.0)的步骤,但我遇到了一个问题,即每当我尝试加载模拟器时,它都会错误地在我身上显示“undefined不是对象(计算“_expo.Constants.manifest”)。我一直在关注世博会的文档,知道在更新过程中可能会出现一些问题,但我找不到任何与此相关的具体内容 My package.json如下所示: { "name": "empty-project-template", "main": "node_modules/expo/AppEn
{
"name": "empty-project-template",
"main": "node_modules/expo/AppEntry.js",
"private": true,
"scripts": {
"storybook": "CONFIG_IS_STORYBOOK=true node startWithEnv.js",
"start": "expo start",
"android": "expo start --android",
"ios": "expo start --ios",
"eject": "expo eject"
},
"dependencies": {
"axios": "^0.18.1",
"expo": "^34.0.4",
"expo-constants": "~6.0.0",
"formik": "^1.3.2",
"hoist-non-react-statics": "^3.2.1",
"react": "16.8.3",
"react-native": "https://github.com/expo/react-native/archive/sdk-34.0.0.tar.gz",
"react-native-easy-grid": "^0.2.0",
"react-native-elements": "^0.19.1",
"react-native-gesture-handler": "~1.3.0",
"react-native-safe-area-view": "^0.11.0",
"react-native-touchable-scale": "^2.0.0",
"react-navigation": "^3.11.1",
"styled-components": "^4.1.1",
"unstated": "^2.1.1",
"xml-query": "^1.5.0",
"xml-reader": "^2.4.3"
},
"devDependencies": {
"@storybook/react-native": "^4.0.7",
"babel-preset-expo": "^5.0.0",
"chalk": "^2.4.1",
"figlet": "^1.2.1",
"shelljs": "^0.8.3",
"yargs": "^12.0.2"
}
}
{
"expo": {
"name": "Project Name",
"description": "This project is really great.",
"slug": "ProjectName-ios",
"privacy": "public",
"sdkVersion": "34.0.0",
"platforms": ["ios", "android"],
"version": "0.1.4",
"orientation": "portrait",
"icon": "./assets/AppIcon@1x.png",
"splash": {
"image": "./assets/splash.png",
"resizeMode": "contain",
"backgroundColor": "#ffffff"
},
"updates": {
"fallbackToCacheTimeout": 0
},
"assetBundlePatterns": ["**/*"],
"ios": {
"supportsTablet": true,
"bundleIdentifier": "it.project.project",
"config": {
"usesNonExemptEncryption": false
},
"infoPlist": {
"NSCameraUsageDescription": "Fill this in"
}
},
"android": {
"package": "it.project.project"
}
}
}
我的app.json如下所示:
{
"name": "empty-project-template",
"main": "node_modules/expo/AppEntry.js",
"private": true,
"scripts": {
"storybook": "CONFIG_IS_STORYBOOK=true node startWithEnv.js",
"start": "expo start",
"android": "expo start --android",
"ios": "expo start --ios",
"eject": "expo eject"
},
"dependencies": {
"axios": "^0.18.1",
"expo": "^34.0.4",
"expo-constants": "~6.0.0",
"formik": "^1.3.2",
"hoist-non-react-statics": "^3.2.1",
"react": "16.8.3",
"react-native": "https://github.com/expo/react-native/archive/sdk-34.0.0.tar.gz",
"react-native-easy-grid": "^0.2.0",
"react-native-elements": "^0.19.1",
"react-native-gesture-handler": "~1.3.0",
"react-native-safe-area-view": "^0.11.0",
"react-native-touchable-scale": "^2.0.0",
"react-navigation": "^3.11.1",
"styled-components": "^4.1.1",
"unstated": "^2.1.1",
"xml-query": "^1.5.0",
"xml-reader": "^2.4.3"
},
"devDependencies": {
"@storybook/react-native": "^4.0.7",
"babel-preset-expo": "^5.0.0",
"chalk": "^2.4.1",
"figlet": "^1.2.1",
"shelljs": "^0.8.3",
"yargs": "^12.0.2"
}
}
{
"expo": {
"name": "Project Name",
"description": "This project is really great.",
"slug": "ProjectName-ios",
"privacy": "public",
"sdkVersion": "34.0.0",
"platforms": ["ios", "android"],
"version": "0.1.4",
"orientation": "portrait",
"icon": "./assets/AppIcon@1x.png",
"splash": {
"image": "./assets/splash.png",
"resizeMode": "contain",
"backgroundColor": "#ffffff"
},
"updates": {
"fallbackToCacheTimeout": 0
},
"assetBundlePatterns": ["**/*"],
"ios": {
"supportsTablet": true,
"bundleIdentifier": "it.project.project",
"config": {
"usesNonExemptEncryption": false
},
"infoPlist": {
"NSCameraUsageDescription": "Fill this in"
}
},
"android": {
"package": "it.project.project"
}
}
}
您需要运行expo安装expo常量。 将应用程序源代码的导入更改为
import Constants from 'expo-constants';