2025年版｜Flutter｜Firebase｜AppleサインインをAndroidとiPhoneに実装する

dependencies:
  # Sign in
  google_sign_in:
  google_sign_in_ios:
  sign_in_with_apple:
  sign_in_button:
  # 略

import 'package:firebase_auth/firebase_auth.dart';
import 'package:google_sign_in/google_sign_in.dart';
import 'package:sign_in_with_apple/sign_in_with_apple.dart';
import 'package:dayby/infrastructure/analytics/google_analytics_tags.dart';

class AuthService {
  // ------------------------------
  // メールアドレスとパスワード
  // ------------------------------
  Future<void> mailSignUp(String email, String password) async {
    await FirebaseAuth.instance.createUserWithEmailAndPassword(
      email: email,
      password: password,
    );
    await GATags().prcAUmailSignUp();
  }

  Future<void> mailSignIn(String email, String password) async {
    await FirebaseAuth.instance.signInWithEmailAndPassword(
      email: email,
      password: password,
    );
    await GATags().prcAUmailSignIn();
  }

  Future<void> passReset(String email) async {
    await FirebaseAuth.instance.sendPasswordResetEmail(
      email: email,
    );
    await GATags().prcAUpassReset();
  }

  // ------------------------------
  // Googleで新規登録＆サインイン
  // ------------------------------
  Future<void> googleSignUpIn() async {
    // アプリが知りたい情報
    const scopes = ['openid', 'profile', 'email'];

    // サインインリクエスト
    final request = GoogleSignIn(scopes: scopes);
    final response = await request.signIn();

    // 戻り値からアクセストークンを取得
    final authn = await response?.authentication;
    final accessToken = authn?.accessToken;

    // アクセストークンがnull＝サインイン途中に離脱　処理を抜ける
    if (accessToken == null) return;

    // Firebaseへアクセストークンを送る
    final oAuthCredential =
        GoogleAuthProvider.credential(accessToken: accessToken);
    await FirebaseAuth.instance.signInWithCredential(oAuthCredential);

    await GATags().prcAUgoogleSignUpIn();
  }

  // ------------------------------
  // AppleIDで新規登録＆ログイン
  // ------------------------------
  Future<void> appleSignUpIn() async {
    final appleProvider = AppleAuthProvider();
    if (kIsWeb) {
      await FirebaseAuth.instance.signInWithPopup(appleProvider);
    } else {
      await FirebaseAuth.instance.signInWithProvider(appleProvider);
    }
    await GATags().prcAUappleSignUpIn();
  }

  // ------------------------------
  // サインアウト
  // ------------------------------
  Future<void> signOut() async {
    await FirebaseAuth.instance.signOut();
    await GATags().prcAUsignOut();
  }

  // ------------------------------
  // 退会
  // ------------------------------
  Future<void> deleteUser() async {
    await FirebaseAuth.instance.currentUser?.delete();
  }
}

final appleSignInButton = SizedBox(
  width: MySize.signinButtonWidth(context), // 画面サイズの7割
  height: MySize().signinButtonHeight, // 40
  child: SignInButton(
    Buttons.apple,
    text: (fieldWidth(context) < 300) ? 'Appleサインイン' : 'Appleアカウントを使う',
    onPressed: () async {
      await AuthService().appleSignUpIn();
      await userDelete();
    },
  ),
);

flutter run --release

Exception attempting to connect to the VM Service: SocketException: Connection failed (OS Error: Address already in use, errno = 48), address = xxx.xx.xx.x, port = xxxxx
This was attempt #400. Will retry in 0:00:01.600000.

Sign in with Apple errored: Error Domain=com.apple.AuthenticationServices.AuthorizationError Code=1000 "(null)"

import 'package:firebase_auth/firebase_auth.dart';
import 'package:google_sign_in/google_sign_in.dart';
import 'package:sign_in_with_apple/sign_in_with_apple.dart';
import 'package:dayby/infrastructure/analytics/google_analytics_tags.dart';

class AuthService {
  // ------------------------------
  // AppleIDで新規登録＆ログイン
  // ------------------------------
  Future<void> appleSignUpIn() async {
    // アプリが知りたい情報
    const scopes = [
      AppleIDAuthorizationScopes.email,
      AppleIDAuthorizationScopes.fullName,
    ];

    // OAthCredentialインスタンス作成
    OAuthProvider oauthProvider = OAuthProvider('apple.com');
    final appleCredential =
        await SignInWithApple.getAppleIDCredential(scopes: scopes);
    final oAuthCredential = oauthProvider.credential(
      idToken: appleCredential.identityToken,
      accessToken: appleCredential.authorizationCode,
    );

    // Firebaseへアクセストークンを送る
    await FirebaseAuth.instance.signInWithCredential(oAuthCredential);
  }
}

flutter: ----------------FIREBASE CRASHLYTICS----------------
flutter: SignInWithAppleAuthorizationException(AuthorizationErrorCode.unknown, The operation couldn’t be completed. (com.apple.AuthenticationServices.AuthorizationError error 1000.))
flutter: 
#0      MethodChannelSignInWithApple.getAppleIDCredential (package:sign_in_with_apple_platform_interface/method_channel_sign_in_with_apple.dart:86:7)
<asynchronous suspension>
#1      AuthService.appleSignUpIn (package:dayby/infrastructure/auth/auth.dart:72:9)
<asynchronous suspension>
#2      Social.build.<anonymous closure> (package:dayby/presentation/pages/_boot/signup_and_signin_social.dart:36:11)
<asynchronous suspension>
flutter: ----------------------------------------------------