This GitHub Action (written in composite run steps) allows you to leverage GitHub Actions to get the Flutter Platforms from the pubspec file.

Create a workflow .yml file in your .github/workflows directory. An example workflow is available below. For more information, reference the GitHub Help Documentation for Creating a workflow file.

For more information on this input, see the Workflow syntax for GitHub Actions

• pubspec-file-path: The pubspec.yaml file path. Optional. Default: pubspec.yaml

For more information on this output, see the Workflow syntax for GitHub Actions and the Context and expression syntax for GitHub Actions

• name: your Flutter project name
• android: your Flutter project should Release on android platform
• ios: your Flutter project should Release on ios platform
• web: your Flutter project should Release on web platform
• windows: your Flutter project should Release on windows platform
• linux: your Flutter project should Release on linux platform
• macos: your Flutter project should Release on macos platform

1. Your pubspec.yaml file must contain the platforms key. For example:

platforms:
  android:
  ios:
  web:
  windows:
  macos:

2. Use the action's output as an input to Flutter action. For example:

on: push

name: Sample Workflow

jobs:
  build:
    name: Example
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v2
      - name: Get Flutter version
        id: get-flutter-version
        uses: zgosalvez/github-actions-get-flutter-version-env@v2
      - name: Set up Flutter
        uses: subosito/flutter-action@v1
        with:
          flutter-version: ${{ steps.get-flutter-version.outputs.version }}

A special mention goes to @daohoangson, who came up with the initial solution at subosito/flutter-action/issues/47#issuecomment-675821988.

This is used in my opinionated GitHub Actions: Flutter Workflows repository along with other actions for a complete end-to-end DevOps experience.

The scripts and documentation in this project are released under the MIT License