Running React Native on Android Emulator

Running React Native on Android Emulator

22 April 2024 Stephan Petzl Leave a comment Tech-Help

Developing with React Native for Android requires a stable and correctly configured development environment. A common issue that developers encounter is running a React Native app on an Android emulator, particularly on macOS. This guide will walk you through the steps to troubleshoot and resolve such problems.

Update Android SDKs

First and foremost, ensure that your Android SDKs are up to date. This includes:

  • Android SDK Tool
  • Android SDK Platform-tools
  • Android SDK Build-tools
  • Android Support Repository under the Extra folder

It is crucial to have the same version of the Android API as the installed Android SDK Build-tools and Android SDK Platform-tools.

Setting Environment Variables

Properly setting environment variables is essential for the React Native CLI to communicate with the Android SDK. Depending on your shell (bash, zsh, etc.), you may need to add the following lines to your .bash_profile, .zshrc, or equivalent configuration file:

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

After adding these, run source ~/.bash_profile or source ~/.zshrc to apply the changes.

Troubleshooting with React Native CLI

The React Native CLI comes with a “doctor” command that can automatically fix many common issues:

        npx @react-native-community/cli doctor

This command will scan your environment and provide solutions to fix potential issues.

Running the Android Emulator

If you’re not using Android Studio to run your emulator, you can start the emulator from the command line:

        android avd

Once the emulator is running, you can deploy your React Native app using:

        react-native run-android

Ensure that you have Android platform tools installed to use adb commands. If not, you can install them with:

        brew install android-platform-tools

Product Spotlight: Repeato

In the context of app development and testing, it’s important to have reliable tools that streamline the process. Repeato is a no-code test automation tool for iOS and Android that simplifies creating, running, and maintaining automated tests for your apps. With its ability to handle all sorts of app frameworks, including React Native, and its integration of ADB commands, Repeato could significantly reduce the time spent on testing and troubleshooting apps on emulators.

Moreover, Repeato’s use of computer vision and AI can help ensure that your React Native app’s UI behaves as expected on different devices and configurations, making it a valuable addition to your development toolkit.

For more information on Android development and troubleshooting, check out our articles on setting up ADB on macOS and launching Android applications via ADB.

Like this article? there’s more where that came from!