I recently came across Github Actions. It's a powerful tool. So, i thought of giving it a try. So, I used it to automate the build of react native android apk.
I created a GitHub repository for this project.

Check it out here

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🚀 Github Action for React Native Build

Add the build.yml as follows

.github/workflows/build.yml

in the project.

name: build on: push: branches: - master jobs: install-and-test: runs-on: ubuntu-latest steps: - uses: actions/checkout@v2 - name: Install npm dependencies run: | npm install build-android: needs: install-and-test runs-on: ubuntu-latest steps: - uses: actions/checkout@v2 - name: Install npm dependencies run: | npm install - name: Build Android Release run: | cd android && ./gradlew assembleRelease - name: Upload Artifact uses: actions/upload-artifact@v1 with: name: app-release.apk path: android/app/build/outputs/apk/release/ 

Build will be triggered as soon as the commit is pushed to the master branch.

After that, builded apk can be found under the artifact section

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Troubleshoot

Gradlew commands not working

You can try to execute the following command before run gradle commands.

chmod +x ./gradlew