Flutter

| Dart | ブログカテゴリ(Flutter) | Android Studio | Flutter macos | FlutterFire | Flutter 手順 |

link

Flutter

link

• https://flutter.dev/

SDK

• https://api.flutter.dev/index.html

Widget

• https://flutter.dev/docs/development/ui/widgets

拡張パッケージ

• https://pub.dev/flutter/packages

Flutter Studio

UIをデザイナで作成できる

• https://flutterstudio.app/

Sample

https://flutter.github.io/samples/gallery.html

Install

Windows

---

• インストール

> git clone https://github.com/flutter/flutter.git -b stable

• 上記インストールパス\bin にPATHを通す

Mac

---

• https://flutter.dev/docs/get-started/install/macos

開発者登録

• https://developer.apple.com/

Flutter SDK インストール

1. sdkダウンロード
2. unzipで解凍
   1. ユーザーホームディレクトリ/opt/flutter
3. .bash_profile にPATH登録
   1. export PATH="~/opt/flutter/bin:$PATH"
4. flutter doctor コマンドで必要な作業のチェックとヘルプ

$ flutter --version
Flutter 1.12.13+hotfix.8 • channel stable • https://github.com/flutter/flutter.git
Framework • revision 0b8abb4724 (9 weeks ago) • 2020-02-11 11:44:36 -0800
Engine • revision e1e6ced81d
Tools • Dart 2.7.0
delhi:~ hirotoyagi$ flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, v1.12.13+hotfix.8, on Mac OS X 10.15.3 19D76, locale ja-JP)
 
[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.3)
[✓] Xcode - develop for iOS and macOS (Xcode 11.4)
[✓] Android Studio (version 3.6)
[✓] VS Code (version 1.43.2)
[!] Connected device
    ! No devices available
 
! Doctor found issues in 1 category.

Xcode設定

• xcodeのダウンロード
• command line tools の有効化

$ sudo xcode-select --switch /Applications/Xcode.app/Contents/Developer/
$ sudo xcodebuild -runFirstLaunch

• cocoapods のインストール

$ sudo gem install cocoapods
$ pod setup

• シミュレーターの起動

$ open - a Simulator

• プロジェクトの作成

$ flutter create my_app

• プロジェクトディレクトリで以下で実行

$ flutter run

プロジェクトにFirebaseを統合

---

• プロジェクトフォルダで以下を実行しXcodeで
• ios

$ open ios/Runner.xcworkspace

• macos

$ open macos/Runner.xcworkspace

• 開発者IDを登録

• Firebase にバンドルIDを登録
  • cd ios
  • pod init
• https://developers.google.com/identity/sign-in/ios/start-integrating

• iPhoneでデベロッパーを信頼
  • 「設定」>「一般」>「プロファイル」または「プロファイルとデバイス管理」の順にタップします。 「エンタープライズ App」見出しの下に、該当する開発元のプロファイルが表示されます。 「エンタープライズ App」見出しの下で開発元のプロファイルの名前をタップし、その開発元を信頼するように設定

• FirebaseをiOSに追加する
  • https://firebase.google.com/docs/ios/setup?hl=ja

• ビルドエラー

diff: /../Podfile.lock: No such file or directory diff: Manifest.lock: No such file or directory error: The sandbox is not in sync with the Podfile.lock. Run ‘pod install’ or update your CocoaPods installation.`

• • 以下xcodeではなく、コマンドで成功

pos update
pod install
flutter build ios
flutter run 

Integrating client project Pod installation complete! There is 1 dependency from the Podfile and 4 total pods installed.

[!] Automatically assigning platform `iOS` with version `8.0` on target `Runner` because no platform was specified. Please specify a platform for this target in your Podfile. See `https://guides.cocoapods.org/syntax/podfile.html#platform`.

[!] CocoaPods did not set the base configuration of your project because your project already has a custom config set. In order for CocoaPods integration to work at all, please either set the base configurations of the target `Runner` to `Target Support Files/Pods-Runner/Pods-Runner.profile.xcconfig` or include the `Target Support Files/Pods-Runner/Pods-Runner.profile.xcconfig` in your build configuration (`Flutter/Release.xcconfig`). delhi:ios hirotoyagi$

環境構築

• https://www.typea.info/blog/index.php/2019/10/03/xamarin_flutter/

Firebase

Flutter.dev 公式プラグイン

---

• https://pub.dev/publishers/flutter.dev/packages

FlutterFire

---

• https://firebase.flutter.dev/
• https://firebaseopensource.com/projects/firebaseextended/flutterfire/
• https://github.com/FirebaseExtended/flutterfire

Firebase Auth

• https://pub.dev/packages/firebase_auth

example

• https://github.com/FirebaseExtended/flutterfire/tree/master/packages/firebase_auth/example

Google Sign in

• https://pub.dev/packages/google_sign_in
• Googleサインイン試す

example

• https://github.com/flutter/plugins/blob/master/packages/google_sign_in/example/lib/main.dart

Widget

Layout

• Cheat Sheet

LayoutBuilder

• https://api.flutter.dev/flutter/widgets/LayoutBuilder-class.html
• Movie

Tips

• Flutter コードサンプル

AndroidX対応

• AndriodX対応

メニュー

ドロワーメニュー

• https://flutter.dev/docs/cookbook/design/drawer
• ドロワーメニューサンプル

return Scaffold(
  appBar: AppBar(),
  drawer: Drawer(),
  body: Center(),
);

ポップアップメニュー

• ポップアップメニューサンプル

画面遷移

• 画面遷移

呼び出し元

RaisedButton(
  onPressed: (){
    Navigator.push(
      context,
      MaterialPageRoute(builder: (context) => SecondRoute()),
    );
  },
  child: const Text('Open Second Screen'),

呼び出し先

import 'package:flutter/material.dart';
 
class SecondRoute extends StatefulWidget {
  @override
  State<StatefulWidget> createState() {
    return _SecondRouted();
  }
}
 
class _SecondRouted extends State<SecondRoute> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(),
      body: Center(),
    );
  }
}

Dialog

• Dialog

画像選択

• 画像選択

画像切り抜き

• 画像切り抜き

DB

Sqlite

• https://flutter.ctrnost.com/logic/sqlite/
• sqfliteパッケージの利用

トラブル

---

Googleサインインを利用したときに、PlatformException(sign_in_failed, com.google.android.gms.common.api.ApiException: 10: , null)エラー

---

• フィンガープリントの作成
• デフォルトパスワードは android

keytool -list -v  -alias androiddebugkey -keystore ~/.android/debug.keystore

• https://www.typea.info/blog/index.php/2020/05/03/flutter-google-sign-in-android-ios/
• フィンガープリント確認

$ keytool -keystore .android/debug.keystore -list -v

• https://developer.android.com/studio/publish/app-signing#sign_release

一度誤ったキーストアを使用してしまった場合、flutter clean を行う

• https://stackoverflow.com/questions/54557479/flutter-and-google-sign-in-plugin-platformexceptionsign-in-failed-com-google

$ flutter clean

• keystore共有
  • http://kyokushin.hatenablog.com/entry/2015/01/27/165529

flutter doctor --android-licenses でエラー

---

calcutta:tenarai_online hirotoyagi$ flutter doctor --android-licenses
Exception in thread "main" java.lang.NoClassDefFoundError: javax/xml/bind/annotation/XmlSchema
        at com.android.repository.api.SchemaModule$SchemaModuleVersion.<init>(SchemaModule.java:156)
        at com.android.repository.api.SchemaModule.<init>(SchemaModule.java:75)
        at com.android.sdklib.repository.AndroidSdkHandler.<clinit>(AndroidSdkHandler.java:81)
        at com.android.sdklib.tool.sdkmanager.SdkManagerCli.main(SdkManagerCli.java:73)
        at com.android.sdklib.tool.sdkmanager.SdkManagerCli.main(SdkManagerCli.java:48)
Caused by: java.lang.ClassNotFoundException: javax.xml.bind.annotation.XmlSchema
        at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:606)
        at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:168)
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
        ... 5 more

flutter run (ios) でエラー

---

    error: Unable to load contents of file list: '/Target Support Files/Pods-Runner/Pods-Runner-frameworks-Debug-input-files.xcfilelist' (in target 'Runner'
    from project 'Runner')
    error: Unable to load contents of file list: '/Target Support Files/Pods-Runner/Pods-Runner-frameworks-Debug-output-files.xcfilelist' (in target 'Runner'
    from project 'Runner')

• Cocoapods の更新

$ sudo gem install cocoapods
$ cd ios
$ pod install