不使用dev-server生成调试APK

如果你真的想生成一个调试APK(用于测试)，可以在没有开发服务器的情况下运行，这里是我对另一篇类似文章的回答的链接，这可能会对你有帮助。 https://stackoverflow.com/a/65762142/7755579

你所要做的就是:

编辑/ app / android构建gradle。

project.ext.react = [
    ...
    bundleInDebug: true, // add this line
]

在项目的根目录下运行此命令

react-native bundle --platform android --dev false --entry-file index.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-dest android/app/src/main/res

然后，在/android文件夹内运行。/gradlew assembleDebug (Mac或Linux)或gradlew assembleDebug (Windows) 如果构建失败，我建议您从Android studio构建应用程序

使用android studio为react的android项目生成签名apk也是一个很好的和简单的选择，在android studio中打开react的android项目并生成击键和签名apk。

您必须创建一个密钥来签署apk。使用下面的方法创建你的密钥:

 keytool -genkey -v -keystore my-app-key.keystore -alias my-app-alias -keyalg RSA -keysize 2048 -validity 10000

在提示时输入密码

生成密钥后，使用它来生成可安装的版本:

 react-native bundle --platform android --dev false --entry-file index.android.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-dest android/app/src/main/res/

使用gradle生成构建

 cd android && ./gradlew assembleRelease

上传APK到你的手机。-r标志将替换现有的应用程序(如果它存在的话)

adb install -r ./app/build/outputs/apk/app-release-unsigned.apk

这里提到了更详细的描述:https://facebook.github.io/react-native/docs/signed-apk-android.html

更新:根据@shashuec和@Fallen的评论

如果出现错误

ENOENT:没有这样的文件或目录，打开'android/app/src/main/assets/index.android.bundle'

执行mkdir android/app/src/main/assets命令

试试下面，它会在你的根/android/app/build/outputs/apk/debug文件夹下生成一个app-debug.apk

React-native bundle——platform android——dev false——entry-file index.js——bundle-output android/app/src/main/assets/index.android。Bundle——assets-dest android/app/src/main/res

然后进入android文件夹并运行

。/ gradlew assembleDebug

一些有用的脚本为windows用户

在包中复制粘贴这些代码。“script”下的Json文件:{}

 * VS Code
   --Enable NPM SCRIPT

   --Now you can directly run scripts from here


    "android": "react-native run-android",
    "clean-run-android": "cd android && ./gradlew clean && cd.. && react-native run-android  ",
    "start": "node node_modules/react-native/local-cli/cli.js start --reset-cache",
    "reset": "rm -rf node_modules/ && npm cache clear && watchman watch-del-all && npm i",
    "debug-build": "react-native bundle --platform android --dev false --entry-file index.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-dest android/app/src/main/res/ && cd android && ./gradlew assembleDebug && cd app/src/main/res/ && rmdir /S /Q raw && rmdir /S /Q drawable-mdpi",
    "release-build": "react-native bundle --platform android --dev false --entry-file index.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-dest android/app/build/intermediates/res/merged/release/ && cd android && ./gradlew assembleRelease && cd..",
    "install-apk": "cd android && ./gradlew installRelease",
    "release-aab": "cd android && ./gradlew bundleRelease"

Android Studio中的GUI方式

Have the Android app part of the React Native app open in Android Studio (this just means opening the android folder of your react-native project with Android Studio) Go to the "Build" tab at the top Go down to "Build Bundle(s) / APK(s)" Then select "Build APK(s)" This will walk you through a process of locating your keys to sign the APK or creating your keys if you don't have them already which is all very straightforward. If you're just practicing, you can generate these keys and save them to your desktop. Once that process is complete and if the build was successful, there will be a popup down below in Android Studio. Click the link within it that says "locate" (the APK) That will take you to the apk file, move that over to your android device. Then navigate to that file on the Android device and install it.