ReactNative can't locate Android SDK

Question

I've followed the installation instructions for ReactNative on the official site but can't get my project to build and install on any device. The issue seems to be that ReactNative can't seem to locate my Android SDK.

If I open the Android specific part of the project in Android Studio I can start the app, so the SDK is properly installed. Maybe related is also that I'm working on a Flutter app simultaneously and Flutter has no problems locating the Android SDK.

Running nix react-native doctor gives me the following:

Common
 ? Node.js
 ? yarn
 ? Watchman - Used for watching changes in the filesystem when in development mode

Android
 ? JDK
 ? Android Studio - Required for building and installing your app on Android
 ? Android SDK - Required for building and installing your app on Android
   - Versions found: N/A
   - Version supported: 29.0.2
 ? ANDROID_HOME

iOS
 ? Xcode - Required for building and installing your app on iOS
 ? CocoaPods - Required for installing iOS dependencies
 ? ios-deploy - Required for installing your app on a physical device with the CLI

Errors:   1
Warnings: 0

Attempting to fix 1 issue...

Android
 ? Android SDK
   Read more about how to download Android SDK at https://reactnative.dev/docs/getting-started

However trying to "fix" the issue just takes me to the getting started page, and as I mentioned before I've done the installation exactly as described. I even tried removing everything related to Android from my computer and reinstalling everything from scratch.

Runnit nix react-native info gives me the following:

info Fetching system and libraries information...
System:
    OS: macOS 10.15.4
    CPU: (8) x64 Intel(R) Core(TM) i7-3720QM CPU @ 2.60GHz
    Memory: 1.97 GB / 16.00 GB
    Shell: 5.7.1 - /bin/zsh
  Binaries:
    Node: 12.16.3 - /usr/local/bin/node
    Yarn: 1.22.4 - /usr/local/bin/yarn
    npm: 6.14.4 - /usr/local/bin/npm
    Watchman: 4.9.0 - /usr/local/bin/watchman
  Managers:
    CocoaPods: 1.9.3 - /usr/local/bin/pod
  SDKs:
    iOS SDK:
      Platforms: iOS 13.5, DriverKit 19.0, macOS 10.15, tvOS 13.4, watchOS 6.2
    Android SDK: Not Found
  IDEs:
    Android Studio: 4.0 AI-193.6911.18.40.6514223
    Xcode: 11.5/11E608c - /usr/bin/xcodebuild
  Languages:
    Java: 14.0.1 - /usr/bin/javac
    Python: 2.7.16 - /usr/bin/python
  npmPackages:
    @react-native-community/cli: Not Found
    react: 16.11.0 => 16.11.0
    react-native: 0.62.2 => 0.62.2
  npmGlobalPackages:
    *react-native*: Not Found

Which just further "proves" that ReactNative can't find the Android SDK.

What I've tried so far:

Adding a local.properties with the content:

sdk.dir=/Users/[username]/Library/Android/sdk

（是的，该文件夹存在并且是正确的，它与 Android Studio 中的设置相同）

更新.zshrc：

export ANDROID_HOME=$HOME/Library/Android/sdk
export ANDROID_SDK_ROOT=$HOME/Library/Android/sdk
export PATH=$PATH:$ANDROID_HOME/emulator
export PATH=$PATH:$ANDROID_HOME/tools
export PATH=$PATH:$ANDROID_HOME/tools/bin
export PATH=$PATH:$ANDROID_HOME/platform-tools

在那个 sdk 文件夹中（在平台中）我有android-28,android-29和android-30. 我也（当然）看过一些有同样问题的人的帖子，但是这两个修复程序中的一个几乎总是可以解决问题，但是它对我不起作用。还有什么可以测试的？

更新：我还可以在运行时添加它npx react-native run-android并 tget 错误：Task 'installDebug' not found in project ':app'.。但是这个问题也应该用 来解决properties.local，这对我不起作用。

Answer 1

我发现在 Android Studio 中安装“Android SDK 命令行工具”插件将允许医生识别更新的 android sdk 实例！

但是它与 react-native 不兼容，我们需要29.0.2，所以一定要检查“显示包详细信息”并在下载之前选择正确的版本。

之后我的npx react-native doctor输出：

michel@michel-ubuntu:~/development/projects/Project$ rn doctor
Common
 ? Node.js
 ? npm

Android
 ? JDK
 ? Android Studio - Required for building and installing your app on Android
 ? Android SDK - Required for building and installing your app on Android
 ? ANDROID_HOME

Errors:   0
Warnings: 0
Common
 ? Node.js
 ? npm

Android
 ? JDK
 ? Android Studio - Required for building and installing your app on Android
 ? Android SDK - Required for building and installing your app on Android
 ? ANDROID_HOME

Errors:   0
Warnings: 0

Answer 2

在 (mac m1) 上修复此问题的步骤：

• 按照https://reactnative.dev/docs/environment-setup中的步骤操作

• 确保您已在 ~/.zshrc 中添加 JAVA_HOME

  export JAVA_HOME=/Library/Java/JavaVirtualMachines/zulu-11.jdk/Contents/Home
  

• 正如环境设置中所述，您只需安装Android 13 (Tiramisu)即可。

• 确保检查以下项目：

  • Android SDK平台 33
  • （适用于 Apple M1 Silicon）Google API ARM 64 v8a 系统映像

• 然后配置环境变量：

  export ANDROID_HOME=$HOME/Library/Android/sdk
  export PATH=$PATH:$ANDROID_HOME/emulator
  export PATH=$PATH:$ANDROID_HOME/platform-tools
  

• 确保通过选中显示包复选框来安装 SDK 构建工具版本 33 和

• SDK 命令行工具版本 33。

  export PATH=$PATH:$ANDROID_HOME/cmdline-tools/10.0/bin