Flutter Mobile Development · レッスン

FlutterのCI/CD

Flutterプロジェクトに継続的インテグレーションと継続的デリバリーのパイプラインを実装し、テストとデプロイのワークフローを自動化します。

「FlutterのCI/CD」はCoddyKit上の無料Flutter Mobile Developmentレッスンです。これはレッスン3/4です。下記で完全なレッスンを無料で読むことができます。その後、ブラウザ内の組み込みコードエディタと24時間対応のAIチューターでハンズオン演習できます。これはFlutter Mobile Development学習パスの一部であり、ウェブとCoddyKitアプリ全体で進捗が同期されます。 Flutter Mobile Developmentコースには全4レッスンが含まれています。

このレッスンの一部はまだ翻訳されておらず、英語で表示されています。

Intro to CI/CD for Flutter

Welcome to the lesson on CI/CD for Flutter! CI/CD stands for Continuous Integration and Continuous Delivery (or Deployment).

These are practices that automate key steps in your software development process, making it faster, more reliable, and less prone to human error.

Understanding Continuous Integration

Continuous Integration (CI) is about frequently merging code changes from multiple developers into a main branch.

Every merge triggers an automated process to:

Build the application.
Run automated tests (unit, widget, integration).
Perform code analysis (linting, formatting).

The goal is to detect and fix integration issues early.

Demystifying Continuous Delivery

Continuous Delivery (CD) extends CI by ensuring that the software can be released to production at any time.

After successful CI, CD automates the process of:

Building release-ready artifacts (e.g., .apk, .ipa).
Deploying these artifacts to various environments (e.g., staging, QA, beta testing tracks).

The final step to production is often a manual decision.

Benefits for Flutter Developers

Why is CI/CD so crucial for Flutter?

Faster Feedback: Quickly know if your changes broke anything.
Higher Quality: Automated tests catch bugs before users do.
Consistent Builds: Ensures every build is created the same way, reducing 'it works on my machine' issues.
Quicker Releases: Streamlined delivery means new features get to users faster.
Reduced Manual Errors: Automation minimizes human mistakes in repetitive tasks.

Top CI/CD Tools for Flutter

Several platforms offer excellent CI/CD capabilities for Flutter projects:

GitHub Actions: Fully integrated with GitHub repositories, highly customizable with YAML workflows.
GitLab CI: Built-in CI/CD for GitLab users, offering powerful pipelines.
Codemagic: A dedicated CI/CD solution specifically optimized for Flutter apps, known for its ease of setup.
Fastlane: While not a full CI/CD system, it's a powerful tool for automating iOS and Android deployment tasks, often used within CI/CD pipelines.

CI Step: Linting & Formatting

A common first step in a CI pipeline is to check code quality. This includes linting (static analysis) and formatting to maintain consistent code style.

Here's a snippet from a GitHub Actions workflow YAML that runs these checks:

name: Flutter CI

on:
  push:
    branches: [ main ]
  pull_request:
    branches: [ main ]

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v3
    - uses: subosito/flutter-action@v2
      with:
        channel: 'stable'
    - run: flutter pub get
    - run: flutter analyze
    - run: flutter format --set-exit-if-changed .

CI Step: Running Tests

Automated testing is a cornerstone of CI. After linting, your pipeline should run all unit, widget, and integration tests to verify functionality and prevent regressions.

Adding flutter test to your CI workflow ensures any new code changes haven't broken existing features.

name: Flutter CI (cont.)

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      # ... previous steps like checkout, flutter setup, pub get
    - run: flutter test

A Simple Dart Program for CI

While CI/CD primarily deals with external configurations, a runnable Dart example helps illustrate code that would be built and tested. Here's a basic Dart program:

class Calculator {
  int add(int a, int b) {
    return a + b;
  }
}

void main() {
  Calculator calc = Calculator();
  int sum = calc.add(5, 3);
  print('The sum is: $sum');
}

CD Step: Building & Deploying

Once CI passes, Continuous Delivery takes over. This involves creating release-ready builds for Android and iOS, then deploying them to distribution services.

For instance, you might build an Android App Bundle (AAB) and upload it to Firebase App Distribution for beta testers:

name: Flutter CD

jobs:
  deploy:
    runs-on: ubuntu-latest
    steps:
      # ... CI steps completed
    - name: Build Android AppBundle
      run: flutter build appbundle --release

    - name: Upload to Firebase App Distribution
      uses: wzieba/Firebase-Distribution-Github-Action@v1
      with:
        appId: ${{secrets.FIREBASE_ANDROID_APP_ID}}
        token: ${{secrets.FIREBASE_TOKEN}}
        groups: testers
        file: build/app/outputs/bundle/release/app-release.aab

CI/CD Quick Check

Let's check your understanding of CI/CD concepts.

Recap: CI/CD for Flutter

In this lesson, we explored Continuous Integration and Continuous Delivery. You learned how these practices automate building, testing, and deploying your Flutter applications.

Embracing CI/CD leads to more reliable code, quicker release cycles, and a smoother, more efficient development workflow. It's a vital practice for modern app development!

よくある質問

「FlutterのCI/CD」レッスンは無料ですか？

はい。「FlutterのCI/CD」の完全なテキストはこのウェブで無料で読めます。インタラクティブに演習し（組み込みコードエディタと24時間対応のAIチューター）、Flutter Mobile Developmentコースの残りをアンロックするには、CoddyKit PROにアップグレードしてください。 Flutter Mobile Developmentコースには全4レッスンが含まれています。

「FlutterのCI/CD」で何を学びますか？

Flutterプロジェクトに継続的インテグレーションと継続的デリバリーのパイプラインを実装し、テストとデプロイのワークフローを自動化します。ブラウザで直接実行するハンズオンコードでFlutter Mobile Developmentを演習し、24時間対応のAIチューターがレッスンを進める中での質問に答えます。

Flutter Mobile Developmentを始めるのに経験は必要ですか？

事前経験は必要ありません。CoddyKitのFlutter Mobile Developmentは初級者から上級者向けに構成されているため、ここから始めるか最初から始めて、自分のペースで進むことができます。これはレッスン3/4です。

「FlutterのCI/CD」レッスンにはどのくらい時間がかかりますか？

ほとんどのCoddyKitレッスンは約5～10分かかります。各レッスンはコンパクトでインタラクティブなので、着実に進歩し、ウェブとアプリ全体で正確に前回の場所から再開できます。

このFlutter Mobile Developmentレッスンでコードを書いて実行できますか？

はい。すべてのFlutter Mobile Developmentレッスンに組み込みコードエディタが含まれているため、ブラウザでリアルコードを書いて実行し、即座のAIフィードバックを取得できます。ローカル設定は不要です。

このコースのすべてのレッスン

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