Dart & Flutter

独学書

Text	Date	Status
動かして学ぶ！Flutter開発入門	2023/12/23	Chapter 4 Firebaseとの連携 finished ->コード

コンテンツ

Contents	Date	Status
Flutterで始めるモバイルアプリ開発	2024/12/29	第29回アプリ名やアイコン設定までFlutterで完結！開発者向けツールを紹介finished

環境

Windows 11

Machine	Env / FW	Last Updated
Windows Insider	Flutter 3.32.0	2025/05/25
	Android Studio Narwhal 2025.1.2 Canary 2	2025/05/25
	Visual Studio Community 2022 17.14.2 Preview 1.0	2025/05/25

Chrome OS Flex 135.0.7049.104 (Official Build)

Machine	Env / FW	Last Updated
Chrome OS Flex	Flutter 3.27.1	2025/01/02
	Debian clang 14.0.6	2025/01/02
	cmake 3.25.1	2025/01/02
	ninja 1.11.1	2025/01/02

Mac OS Sequoia 15.4.1

Machine	Env / FW	Last Updated
Mac OS	Flutter 3.27.1	2024/12/29

ノウハウ

flutter dev
- Get started
- myapp - flutter demo
- Startup namer

Setup

Expand-Archive –Path $env:USERPROFILE\Downloads\flutter_windows_3.27.1-stable.zip -Destination $env:USERPROFILE\dev\

flutter doctor -v

Windows Insider

[√] Flutter (Channel stable, 3.32.0, on Microsoft Windows [Version 10.0.26200.5603], locale ja-JP) [723ms]
    • Flutter version 3.32.0 on channel stable at C:\Users\taish\dev\flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision be698c48a6 (6 days ago), 2025-05-19 12:59:14 -0700
    • Engine revision 1881800949
    • Dart version 3.8.0
    • DevTools version 2.45.1

[√] Windows Version (Windows 11 or higher, 24H2, 2009) [4.9s]

[√] Android toolchain - develop for Android devices (Android SDK version 36.0.0) [4.1s]
    • Android SDK at C:\Users\taish\AppData\Local\Android\Sdk
    • Platform android-36, build-tools 36.0.0
    • ANDROID_HOME = C:\Users\taish\AppData\Local\Android\Sdk
    • Java binary at: C:\Program Files\Android\Android Studio Narwhal\jbr\bin\java
      This is the JDK bundled with the latest Android Studio installation on this machine.
      To manually set the JDK path, use: `flutter config --jdk-dir="path/to/jdk"`.
    • Java version OpenJDK Runtime Environment (build 21.0.6+-13391695-b895.109)
    • All Android licenses accepted.

[√] Chrome - develop for the web [384ms]
    • Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe

[√] Visual Studio - develop Windows apps (Visual Studio Community 2022 17.14.2 Preview 1.0) [383ms]
    • Visual Studio at C:\Program Files\Microsoft Visual Studio\2022\Preview
    • Visual Studio Community 2022 version 17.14.36121.58
    • The current Visual Studio installation is a pre-release version. It may not be supported by Flutter yet.
    • Windows 10 SDK version 10.0.26100.0

[√] Android Studio (version 2025.1.2) [124ms]
    • Android Studio at C:\Program Files\Android\Android Studio Narwhal
    • Flutter plugin can be installed from:
      https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 21.0.6+-13391695-b895.109)

[√] IntelliJ IDEA Community Edition (version 2025.1) [122ms]
    • IntelliJ at C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2024.3.4
    • Flutter plugin version 85.2.4
    • Dart plugin version 251.25410.28

[√] VS Code (version 1.100.2) [19ms]
    • VS Code at C:\Users\taish\AppData\Local\Programs\Microsoft VS Code
    • Flutter extension version 3.110.0

[√] Connected device (3 available) [2.4s]
    • Windows (desktop) • windows • windows-x64    • Microsoft Windows [Version 10.0.26200.5603]
    • Chrome (web)      • chrome  • web-javascript • Google Chrome 136.0.7103.114
    • Edge (web)        • edge    • web-javascript • Microsoft Edge 137.0.3296.39

[√] Network resources [656ms]
    • All expected network resources are available.

• No issues found!

Mac OS

[!] Flutter (Channel stable, 3.27.1, on macOS 15.2 24C101 darwin-arm64, locale ja-JP)
    • Flutter version 3.27.1 on channel stable at /Users/taishow2024/src/flutter
    ! Upstream repository https://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:x-oauth-basic@github.com/flutter/flutter.git is not a standard remote.
      Set environment variable "FLUTTER_GIT_URL" to https://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:x-oauth-basic@github.com/flutter/flutter.git to
      dismiss this error.
    • Framework revision 17025dd882 (13 days ago), 2024-12-17 03:23:09 +0900
    • Engine revision cb4b5fff73
    • Dart version 3.6.0
    • DevTools version 2.40.2
    • If those were intentional, you can disregard the above warnings; however it is recommended to use "git" directly to perform update checks and
      upgrades.

[✗] Android toolchain - develop for Android devices
    ✗ Unable to locate Android SDK.
      Install Android Studio from: https://developer.android.com/studio/index.html
      On first launch it will assist you in installing the Android SDK components.
      (or visit https://flutter.dev/to/macos-android-setup for detailed instructions).
      If the Android SDK has been installed to a custom location, please use
      `flutter config --android-sdk` to update to that location.


[✓] Xcode - develop for iOS and macOS (Xcode 16.1)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Build 16B40
    • CocoaPods version 1.16.1

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[!] Android Studio (not installed)
    • Android Studio not found; download from https://developer.android.com/studio/index.html
      (or visit https://flutter.dev/to/macos-android-setup for detailed instructions).

[✓] VS Code (version 1.96.2)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.102.0

[✓] Connected device (4 available)
    • iPhone 16 Pro (mobile)          • 17212119-2285-4ED4-80BC-E40A2F42FEF3 • ios            • com.apple.CoreSimulator.SimRuntime.iOS-18-1 (simulator)
    • macOS (desktop)                 • macos                                • darwin-arm64   • macOS 15.2 24C101 darwin-arm64
    • Mac Designed for iPad (desktop) • mac-designed-for-ipad                • darwin         • macOS 15.2 24C101 darwin-arm64
    • Chrome (web)                    • chrome                               • web-javascript • Google Chrome 131.0.6778.205

[✓] Network resources
    • All expected network resources are available.

! Doctor found issues in 3 categories.

Chrome OS Flex

[✓] Flutter (Channel stable, 3.27.1, on Debian GNU/Linux 12 (bookworm) 6.6.54-05528-gdd4efe62d86b, locale en_US.UTF-8)
    • Flutter version 3.27.1 on channel stable at /home/taishow2006/src/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 17025dd882 (2 weeks ago), 2024-12-17 03:23:09 +0900
    • Engine revision cb4b5fff73
    • Dart version 3.6.0
    • DevTools version 2.40.2

[✗] Android toolchain - develop for Android devices
    ✗ Unable to locate Android SDK.
      Install Android Studio from: https://developer.android.com/studio/index.html
      On first launch it will assist you in installing the Android SDK components.
      (or visit https://flutter.dev/to/linux-android-setup for detailed instructions).
      If the Android SDK has been installed to a custom location, please use
      `flutter config --android-sdk` to update to that location.


[✗] Chrome - develop for the web (Cannot find Chrome executable at google-chrome)
    ! Cannot find Chrome. Try setting CHROME_EXECUTABLE to a Chrome executable.

[✓] Linux toolchain - develop for Linux desktop
    • Debian clang version 14.0.6
    • cmake version 3.25.1
    • ninja version 1.11.1
    • pkg-config version 1.8.1

[!] Android Studio (not installed)
    • Android Studio not found; download from https://developer.android.com/studio/index.html
      (or visit https://flutter.dev/to/linux-android-setup for detailed instructions).

[✓] VS Code (version 1.96.2)
    • VS Code at /usr/share/code
    • Flutter extension version 3.102.0

[✓] Connected device (1 available)
    • Linux (desktop) • linux • linux-x64 • Debian GNU/Linux 12 (bookworm) 6.6.54-05528-gdd4efe62d86b

[✓] Network resources
    • All expected network resources are available.

! Doctor found issues in 3 categories.

flutterの更新
```
flutter upgrade
```
flutter 3.27.1
- Android Studio Meerkat 2024.3.1 Canary 6
  - AndroidManifest.xml に下記追加
    <uses-permission android:name="android.permission.INTERNET"/>
- Chrome OS Flex
```
sudo apt install clang cmake ninja-build
```
- iOS Simulator on Mac OS
flutter 3.24.3 / Android Studio Ladybug
- Java 21
- Gradle 8.10
- Gradle Plugin も考慮する
  - Android Application Gradle Plugin
Build エラーシューティング
- flutter環境の確認
```
flutter doctor -v
```
- JavaのバージョンとGradleのバージョンの対応確認
動かして学ぶ！Flutter開発入門
- firebase
  - firebase（Webサイト）でプロジェクトを作成する
  - コンソールでfirebaseを利用する設定を行う
    - firebase-toolsをインストールする
```
npm install -g firebase-tools
```
    - firebaseにログインする
```
firebase login
```
    - firebaseCLIをインストールする
```
dart pub global activate flutterfire_cli
```
    - flutterアプリと紐づけるため、プロジェクトを作成する
```
flutter create <Project Name>
```
    - flutterアプリと紐づける
```
cd <ProjectDirectory>
flutterfire configure --project={firebaseのプロジェクト名}
```
  - Functions（関数）・・・Blazeプランに変更しないと利用できない
    - デプロイされている関数を一覧で確認
    - Timerトリガの関数
      - Cloud Schedulerで実行周期を確認
- flutter icon
- 64Kを超えるメソッドを使用する Multidex Support
カスタムフォントの利用公式ドキュメント
- Raleway and Roboto Mono(Google Fonts)
- LINESeed JP
Android Studio Update
- Kotlin dist downloading failed

アプリ作成

情報収集
1. 株価取得
  - kabuステーションAPI
  - auカブコム証券のkabuステーションAPIを使ってみる
2. Flutter
  - FlutterでAPIリクエストを行う（初心者向け）