Para supports social login authentication in Flutter applications, allowing users to sign in using popular providers like Google, Apple, Twitter, Discord, and Farcaster. This guide explains how to implement social login in your Flutter app using Para’s Flutter SDK.

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Prerequisites

Before implementing social login, ensure you have completed the basic Para setup for your Flutter application.

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Configuration

<key>CFBundleURLTypes</key>
<array>
  <dict>
    <key>CFBundleTypeRole</key>
    <string>Editor</string>
    <key>CFBundleURLSchemes</key>
    <array>
      <string>YOUR_APP_SCHEME</string>
    </array>
  </dict>
</array>

<key>CFBundleURLTypes</key>
<array>
  <dict>
    <key>CFBundleTypeRole</key>
    <string>Editor</string>
    <key>CFBundleURLSchemes</key>
    <array>
      <string>YOUR_APP_SCHEME</string>
    </array>
  </dict>
</array>

<activity 
    android:name="com.linusu.flutter_web_auth_2.CallbackActivity" 
    android:exported="true">
    <intent-filter android:label="flutter_web_auth_2">
        <action android:name="android.intent.action.VIEW" />
        <category android:name="android.intent.category.DEFAULT" />
        <category android:name="android.intent.category.BROWSABLE" />
        <data android:scheme="YOUR_APP_SCHEME" />
    </intent-filter>
</activity>

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Implementation

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OAuth Authentication

import 'package:para/para.dart';
import 'package:para_flutter/client/para.dart';

// OAuth connection with Para
final oAuthResponse = await para.oAuthConnect(provider, "YOUR_APP_SCHEME");

// For existing users
if (oAuthResponse.userExists) {
  // Login with the email from OAuth response
  final wallet = await para.login(email: oAuthResponse.email);
} 
// For new users
else {
  // Verify OAuth completion
  final biometricsId = await para.verifyOAuth();
  
  // Generate passkey
  await para.generatePasskey(oAuthResponse.email!, biometricsId);
  
  // Create wallet
  final result = await para.createWallet(skipDistribute: false);
}

​

Available OAuth Providers

Para supports various OAuth providers through the OAuthMethod enum:

// Available OAuth methods
OAuthMethod.google    // Google authentication
OAuthMethod.apple     // Apple authentication
OAuthMethod.twitter   // Twitter (X.com) authentication
OAuthMethod.discord   // Discord authentication

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Checking Login Status

You may want to check if a user is already authenticated when your app starts:

// Check if user is logged in
final isLoggedIn = await para.isFullyLoggedIn();

// If logged in, get user wallets
if (isLoggedIn) {
  final wallets = await para.getWallets();
  // Process wallets as needed
}

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Examples

Explore our complete example implementations for social login with Para:

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Next Steps

After integrating Para, you can explore other features and integrations to enhance your Para experience.