Google Sign In Setup Guide for Mobile App

This guide will help you set up Google Sign In in your MartFury mobile app.

Prerequisites

1. A Google Cloud Platform Account
2. Basic knowledge of mobile app development

Step 1: Configure Google Cloud Platform

1. Go to Google Cloud Console

2. Create a new project or select an existing one

3. Enable the Google Sign-In API

4. Go to "Credentials"

5. Create OAuth 2.0 Client IDs for both Android and iOS

Note:

6. Note down your Client ID and Server Client ID

Step 2: Configure Your Mobile App

Environment Variables

Create or update your .env file with the following variables:

GOOGLE_CLIENT_ID=your_google_client_id
GOOGLE_SERVER_CLIENT_ID=your_google_server_client_id

iOS Configuration

The Google Sign In configuration is already set up in your Info.plist. Make sure it contains:

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

Android Configuration

For Android, you need to add the following to your AndroidManifest.xml:

<activity
    android:name="com.google.android.gms.auth.api.signin.internal.SignInHubActivity"
    android:excludeFromRecents="true"
    android:exported="false"
    android:theme="@android:style/Theme.Translucent.NoTitleBar" />

And in your app's build.gradle:

defaultConfig {
    // ...
    manifestPlaceholders += [
        'appAuthRedirectScheme': 'com.googleusercontent.apps.YOUR_CLIENT_ID'
    ]
}

Step 3: Testing the Integration

Troubleshooting

Common Issues

1. Sign In fails with "Invalid configuration"

   • Verify that your Google Cloud project is properly configured
   • Check that your app's bundle ID/package name matches the one in Google Cloud Console
   • Ensure the OAuth consent screen is configured

2. App crashes on Google Sign In

   • Verify that your Google Client IDs are correct
   • Check that all required configurations are in place
   • Ensure you have an active internet connection

Getting Help

If you encounter any issues:

1. Check the Google Sign-In Documentation
2. Review the google_sign_in package documentation
3. Check your app's logs for detailed error messages

Security Considerations

1. Never commit your Google Client IDs to version control
2. Always use environment variables for sensitive data
3. Implement proper error handling and user feedback

Additional Resources

• Google Cloud Console
• Google Sign-In Documentation
• google_sign_in Package