GitHub Actions

Set up a Flutter CI flow with GitHub Actions.

What is GitHub Actions?

GitHub Actions is a system that runs automated jobs (CI) on code pushed to a GitHub repository. You define a workflow by placing a YAML file in the .github/workflows/ folder. A typical Flutter pipeline includes flutter test and flutter build steps.

name: CI
on: [push, pull_request]
jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: subosito/flutter-action@v2
      - run: flutter test

CI steps

A typical Flutter CI pipeline: check out code (actions/checkout), install the Flutter SDK (subosito/flutter-action), fetch dependencies (flutter pub get), run tests (flutter test), and build (flutter build apk). Each run: line is a shell command.

Exercise CI steps list

In main, define a list of String CI steps in order: 'checkout', 'flutter pub get', 'flutter test', 'flutter build apk'. Print the 3rd element (index 2) with print.

Show example solution

void main() {
  final steps = <String>[
    'checkout',
    'flutter pub get',
    'flutter test',
    'flutter build apk',
  ];
  print(steps[2]);
}

Test yourself

In which folder is a GitHub Actions workflow file placed?
- bin/
- lib/
- .github/workflows/
- test/
Show answer

.github/workflows/ — Workflow YAML files go in the .github/workflows/ folder; GitHub scans it to start CI jobs.

Workflow trigger

on: [____, pull_request]

Show answer

on: [push, pull_request]

GitHub Actions matches

GitHub Actions

CI system
workflow

Automated workflow
.github/workflows

Workflow folder
run

Shell command

Next lesson: Summary - Testing and CI/CD

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