【Flutter × Firebase】連携手順

% npm install -g firebase-tools

% firebase login

% firebase logout

% dart pub global activate flutterfire_cli

Package flutterfire_cli is currently active at version 0.2.6.
The package flutterfire_cli is already activated at newest available version.
To recompile executables, first run `dart pub global deactivate flutterfire_cli`.
Installed executable flutterfire.
Warning: Pub installs executables into $HOME/.pub-cache/bin, which is not on your path.
You can fix that by adding this to your shell's config file (.bashrc, .bash_profile, etc.):

  export PATH="$PATH":"$HOME/.pub-cache/bin"

Activated flutterfire_cli 0.2.6.

% echo $SHELL
/bin/zsh

% vi ~/.zshrc

export PATH="$PATH":"$HOME/.pub-cache/bin"

% dart pub global activate flutterfire_cli
Package flutterfire_cli is currently active at version 0.2.6.
The package flutterfire_cli is already activated at newest available version.
To recompile executables, first run `dart pub global deactivate flutterfire_cli`.
Installed executable flutterfire.
Activated flutterfire_cli 0.2.6.

% flutterfire configure

i Found 1 Firebase projects.                                                                                                                                                                                                    
✔ Select a Firebase project to configure your Flutter application with · プロジェクト名                                                                                                                        
✔ Which platforms should your configuration support (use arrow keys & space to select)? · android, ios     

% flutter pub add firebase_core

% flutterfire configure

void main() {
  runApp(const MyApp());
}

Future<void> main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await Firebase.initializeApp(
    options: DefaultFirebaseOptions.currentPlatform,
  );
  runApp(const MyApp());
}

/Users/ディレクトリ/android/app/src/debug/AndroidManifest.xml Error:
	uses-sdk:minSdkVersion 16 cannot be smaller than version 19 declared in library [com.google.firebase:firebase-analytics-ktx:21.2.0] 
 /Users/ユーザー名/.gradle/caches/transforms-3/77fcfc1a5ffca8d94a6c1536b3786a34/transformed/jetified-firebase-analytics-ktx-21.2.0/AndroidManifest.xml as the library might be using APIs not available in 16
	Suggestion: use a compatible library with a minSdk of at most 16,
		or increase this project's minSdk version to at least 19,
		or use tools:overrideLibrary="com.google.firebase.analytics.ktx" to force usage (may lead to runtime failures)

    defaultConfig {
        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
        applicationId "com.example.flutter_sns"
        // You can update the following values to match your application needs.
        // For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-build-configuration.
        minSdkVersion flutter.minSdkVersion

error: Unexpected duplicate tasks
note: Target 'Runner' (project 'Runner') has copy command from '/Users/ディレクトリ名/ios/Runner/GoogleService-Info.plist' 
to '/Users/ディレクトリ名/build/ios/Debug-iphonesimulator/Runner.app/GoogleService-Info.plist'

% flutter pub add firebase_auth