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Flutter

Flutter+Kuzzle

KuzzleのFlutterチュートリアル的なものをやってみた。

Flutter | Kuzzle Documentation

Dart Null Safety v3.x を選択しても、中身はv2と同じようだ。 pubspec.yamlのSDKバージョン指定まで同じなので、v2系がインストールされてしまってflutter build web実行したときにコンパイルエラーになる。 kuzzle: ^3.0.2に編集したらコンパイル通った。

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Flutter再開

久しぶりすぎてFlutterアプリの初手を忘れていたのでメモ。

先日、Flutter 3をインストールしてあったのでその続きから。

~/.bashrc にexport追加＆bashrc再読み込み。

export PATH=$HOME/sdk/flutter/bin:$PATH

アプリ用のディレクトリに入って初期化実行。

flutter create .

Flutter 3をインストールしてみる

WSL2にインストールしてみる。

Linux install | Flutter

$ cd ~/sdk
$ git clone https://github.com/flutter/flutter.git -b stable
$ export PATH="$PATH:`pwd`/flutter/bin"
$ flutter doctor

Missing "unzip" tool. Unable to extract Dart SDK.
Consider running "sudo apt-get install unzip".

$ sudo apt-get install unzip
$ flutter doctor
[✓] Flutter (Channel stable, 3.0.0, on Ubuntu 20.04 LTS 5.10.16.3-microsoft-standard-WSL2, locale C.UTF-8)
[✗] 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/docs/get-started/install/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 (the doctor check crashed)
    ✗ Due to an error, the doctor check did not complete. If the error message below is not helpful, please let us know about this issue
      at https://github.com/flutter/flutter/issues.
    ✗ ProcessException: Failed to find "pkg-config" in the search path.
        Command: pkg-config 
[!] Android Studio (not installed)
[✓] Connected device (1 available)
[✓] HTTP Host Availability

! Doctor found issues in 4 categories.

とりあえず本体は入ったのでヨシ。

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Flutter 3

［速報］「Flutter 3」登場、FlutterによるmacOSとLinuxアプリ開発が正式版に。Macのユニバーサルバイナリにも対応 － Publickey

MacとLinuxのアプリケーション開発の正式版より、「Firebase plugin for Flutter」のほうが気になった。

これは前に使っていたFlutterFireとは別物？と思ったけど、FlutterFireの説明が「The official Firebase plugins for Flutter.」ってなってるし、https://firebase.flutter.dev/がhttps://firebase.google.com/docs/flutter/setupにリダイレクトされるようになっているので、FlutterFireがFirebase plugin for Flutterに改名したということなのかな。

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Flutterに入門

Surface Go 2 に Flutter Web 環境をインストールしたのでメモ。

基本的には公式手順に沿って進める。

  • gitからclone
$ cd ~/workspace
$ git clone https://github.com/flutter/flutter.git -b stable

  • 環境変数PATHに追加 ユーザー環境変数の最後に追加した

  • flutter doctor実行

[√] Flutter (Channel stable, 1.20.2, on Microsoft Windows [Version 10.0.19041.450], locale ja-JP)
[X] Android toolchain - develop for Android devices
    X 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/docs/get-started/install/windows#android-setup for detailed instructions).
      If the Android SDK has been installed to a custom location, set ANDROID_SDK_ROOT to that location.
      You may also want to add it to your PATH environment variable.

[!] Android Studio (not installed)
[!] VS Code (version 1.48.2)
    X Flutter extension not installed; install from
      https://marketplace.visualstudio.com/items?itemName=Dart-Code.flutter
[!] Connected device
    ! No devices available

この時点ではこれでOK

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