单Firebase账号搭建双应用：管理员应用登录错误10求助

Hey there, let's tackle that Google sign-in error 10 you're hitting with your admin Ionic app. Error 10 in Firebase Auth almost always ties back to misconfigured OAuth credentials or app-specific setup gaps—let's break this down step by step to get you sorted.

1. Verify Firebase/Google Cloud OAuth Credentials (The Most Common Fix) #

First off, don't assume your regular user app's config works for the admin app—they need separate credentials if they have unique package IDs/bundle IDs:

• Head to your Firebase project's Authentication > Sign-in method and double-check Google sign-in is enabled (it probably is since your user app works, but quick confirmation never hurts).
• Go to Project Settings > General > Your apps—if you haven't already added your admin Ionic app as a separate entry here, do it now. Each app (user vs admin) needs its own Firebase app registration.
• Copy the admin app's Web SDK config (you'll need this for your Ionic code later). Then jump over to the linked Google Cloud Console (same project), navigate to APIs & Services > Credentials:
  • For Android: Make sure the debug/release SHA-1 fingerprints for your admin app are added to the OAuth 2.0 client ID. You can grab the debug fingerprint with this command:

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

    Don't forget—emulator and device fingerprints might differ, so add both if you test on both.
  • For iOS: Confirm the bundle ID in the OAuth client matches exactly what's in your Xcode project (no typos, case sensitivity matters!).
  • For Web/PWA: Check that Authorized JavaScript origins and Authorized redirect URIs include your admin app's running address (like http://localhost:8100 for local testing).

2. Double-Check Ionic Project Firebase Config #

Make sure your admin app is using its own Firebase config, not the regular user app's:

• Create or update a firebase-config.ts file in your Ionic project with the admin app's credentials from Firebase:

  export const firebaseConfig = {
    apiKey: "YOUR_ADMIN_APP_API_KEY",
    authDomain: "your-project.firebaseapp.com",
    projectId: "your-project-id",
    storageBucket: "your-project.appspot.com",
    messagingSenderId: "your-sender-id",
    appId: "YOUR_ADMIN_APP_ID",
    measurementId: "G-YOUR_MEASUREMENT_ID"
  };
  

• If you're using @angular/fire or @ionic/firebase-auth, explicitly set the admin client ID in your Google sign-in provider setup:

  import { GoogleAuthProvider } from "@angular/fire/auth";
  
  const googleProvider = new GoogleAuthProvider();
  // Force use of the admin app's client ID to avoid mismatches
  googleProvider.setCustomParameters({
    client_id: "YOUR_ADMIN_APP_CLIENT_ID"
  });
  

3. Clear Caches & Rebuild (Don't Skip This!) #

Old cached configs are sneaky and often prevent new settings from taking effect:

• Clear Ionic's local cache:

  ionic cache clear
  

• Rebuild your project:

  ionic build
  

• For Android: Navigate to the android folder and run:

  ./gradlew clean
  

• For iOS: Delete Xcode's Derived Data, then run pod install in the ios folder to refresh dependencies.

4. Check Platform-Specific SDKs #

• Android: Ensure your emulator has the latest Google Play Services installed—outdated versions can break auth flows. You can update this via the emulator's extended controls.
• iOS: Confirm you've added the GoogleSignIn framework correctly, and that your Info.plist includes the Google callback URL scheme:

  <key>CFBundleURLTypes</key>
  <array>
    <dict>
      <key>CFBundleURLSchemes</key>
      <array>
        <string>com.googleusercontent.apps.YOUR_ADMIN_CLIENT_ID</string>
      </array>
    </dict>
  </array>
  

Error 10 is almost never a "mystery" issue—it's almost always a credential mismatch or missing setup step. Start with the OAuth credentials check, since that's the #1 culprit, and work your way down. You'll have that admin app logged in in no time!

内容的提问来源于stack exchange，提问作者Ciprian