Building and Installing Unsigned APK without Development Server

Building and Installing Unsigned APK without Development Server

17 December 2024 Stephan Petzl Leave a comment Tech-Help

When developing React Native applications, you might encounter a scenario where you need to build and install an unsigned APK on a device without connecting to a development server. This is particularly useful for testing purposes, allowing the app to run independently of the server. Here’s a step-by-step guide to achieve this.

Step-by-Step Guide

1. Bundle Your Application

To bundle your application, you need to create a JavaScript bundle manually. This process ensures that all necessary assets are included in the 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

2. Modify Gradle Configuration

Next, adjust your Gradle configuration to include the bundle in the debug build. Edit the build.gradle file located in android/app/ and add the following configuration:

project.ext.react = [
    bundleInDebug: true, // Ensures the bundle is included in the debug build
]

This modification informs Gradle to package the JavaScript bundle with the APK, eliminating the need for a development server connection during execution.

3. Assemble the Debug APK

Navigate to the android directory and run the following command to assemble the debug APK:

cd android
./gradlew assembleDebug

Upon completion, the APK will be available in android/app/build/outputs/apk/debug/ directory, ready for installation.

Practical Considerations

This approach is particularly useful for testing scenarios where the development server cannot be accessed or when simulating the end-user experience of installing and running the app directly from an APK file.

Enhancing Testing Efficiency with Repeato

For developers looking to streamline their testing process, Repeato offers a no-code test automation solution for iOS and Android applications. Utilizing computer vision and AI, Repeato allows you to create, run, and maintain automated tests efficiently. This tool is especially beneficial when testing React Native apps, offering rapid test execution without the need for extensive coding, thus enhancing productivity and accuracy in mobile app testing.

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