Fix React Native doctor Android errors

This post goes over how to fix React Native doctor errors for Android on macOS:

JDK
Android Studio
Android SDK
- Versions found: N/A
- Version supported
ANDROID_HOME

Errors

Run:

npx react-native doctor

To see the possible Android errors:

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: 31.0.0
 ✖ ANDROID_HOME

JDK

Follow the React Native documentation to install the Java Development Kit:

brew install --cask zulu11

Or download JDK from Oracle.

Android Studio

Follow the React Native documentation to set up the Android development environment.

Android SDK

Follow the React Native documentation to Install Android SDK.

Versions found: N/A

Install Android SDK Command-Line Tools and append the PATH in your config file:

export PATH=$PATH:$HOME/Library/Android/sdk/cmdline-tools/latest/bin

Version supported

Go to android/build.gradle and set buildToolsVersion to the version you’re using:

 buildscript {
     ext {
-        buildToolsVersion = "31.0.0"
+        buildToolsVersion = "33.0.0"

Also bump compileSdkVersion if you’re getting build errors like:

Dependency 'androidx.appcompat:appcompat:1.5.1' requires 'compileSdkVersion' to be set to 32 or higher.
Compilation target for module ':app' is 'android-31'

ANDROID_HOME

Export ANDROID_HOME in your config file:

export ANDROID_HOME=$HOME/Library/Android/sdk

Environment Variables

Add the following to your $HOME/.bash_profile or $HOME/.bashrc (if you’re using zsh then ~/.zprofile or ~/.zshrc) config:

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

Conclusion

Rerun npx react-native doctor and you should get no errors:

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