Auth0 React Native Integration

Add authentication to React Native and Expo mobile applications using react-native-auth0.

Prerequisites

• React Native or Expo application

• Auth0 account and application configured as Native type

• If you don't have Auth0 set up yet, use the auth0-quickstart skill first

When NOT to Use

• React web applications - Use auth0-react skill for SPAs (Vite/CRA)

• React Server Components - Use auth0-nextjs for Next.js applications

• Non-React native apps - Use platform-specific SDKs (Swift for iOS, Kotlin for Android)

• Backend APIs - Use JWT validation libraries for your server language

Quick Start Workflow

1. Install SDK

Expo:

npx expo install react-native-auth0

React Native CLI:

npm install react-native-auth0 npx pod-install # iOS only

2. Configure Environment

For automated setup with Auth0 CLI, see Setup Guide for complete scripts.

For manual setup:

Create .env :

AUTH0_DOMAIN=your-tenant.auth0.com AUTH0_CLIENT_ID=your-client-id

3. Configure Native Platforms

iOS - Update ios/{YourApp}/Info.plist :

<key>CFBundleURLTypes</key> <array> <dict> <key>CFBundleTypeRole</key> <string>None</string> <key>CFBundleURLName</key> <string>auth0</string> <key>CFBundleURLSchemes</key> <array> <string>$(PRODUCT_BUNDLE_IDENTIFIER).auth0</string> </array> </dict> </array>

Android - Update android/app/src/main/AndroidManifest.xml :

<activity android:name="com.auth0.android.provider.RedirectActivity" android:exported="true"> <intent-filter> <action android:name="android.intent.action.VIEW" /> <category android:name="android.intent.category.DEFAULT" /> <category android:name="android.intent.category.BROWSABLE" /> <data android:host="YOUR_AUTH0_DOMAIN" android:pathPrefix="/android/${applicationId}/callback" android:scheme="${applicationId}" /> </intent-filter> </activity>

Expo - Update app.json :

{ "expo": { "scheme": "your-app-scheme", "ios": { "bundleIdentifier": "com.yourcompany.yourapp" }, "android": { "package": "com.yourcompany.yourapp" } } }

4. Add Authentication with Auth0Provider

Wrap your app with Auth0Provider :

import React from 'react'; import { Auth0Provider } from 'react-native-auth0'; import App from './App';

export default function Root() { return ( <Auth0Provider domain={process.env.AUTH0_DOMAIN} clientId={process.env.AUTH0_CLIENT_ID} > <App /> </Auth0Provider> ); }

5. Use the useAuth0 Hook

import React from 'react'; import { View, Button, Text, ActivityIndicator } from 'react-native'; import { useAuth0 } from 'react-native-auth0';

export default function App() { const { user, authorize, clearSession, isLoading } = useAuth0();

const login = async () => { try { await authorize({ scope: 'openid profile email' }); } catch (error) { console.error('Login error:', error); } };

const logout = async () => { try { await clearSession(); } catch (error) { console.error('Logout error:', error); } };

if (isLoading) { return <ActivityIndicator />; }

return ( <View> {user ? ( <> <Text>Welcome, {user.name}!</Text> <Text>{user.email}</Text> <Button title="Logout" onPress={logout} /> </> ) : ( <Button title="Login" onPress={login} /> )} </View> ); }

6. Test Authentication

Expo:

npx expo start

React Native:

npx react-native run-ios

or

npx react-native run-android

Detailed Documentation

• Setup Guide - Automated setup, native configuration, deep linking

• Patterns Guide - Secure storage, biometric auth, token refresh

• API Reference - Complete SDK API, methods, configuration options

Common Mistakes

Mistake Fix

Forgot to wrap app with Auth0Provider All components using useAuth0() must be children of Auth0Provider

Forgot to configure deep linking Add URL scheme to iOS Info.plist and Android AndroidManifest.xml (see Step 3)

Callback URL mismatch Ensure callback URL in Auth0 Dashboard matches your app's URL scheme (e.g., com.yourapp.auth0://YOUR_DOMAIN/ios/com.yourapp/callback )

iOS build fails after install Run npx pod-install to link native dependencies

App created as SPA type in Auth0 Must be Native application type for mobile apps

Not handling auth errors Wrap authorize/clearSession calls in try-catch blocks

Deep link not working on Android Verify android:exported="true" is set on RedirectActivity

Related Skills

• auth0-quickstart

• Basic Auth0 setup

• auth0-migration

• Migrate from another auth provider

• auth0-mfa

• Add Multi-Factor Authentication

Quick Reference

Core Hook API:

• useAuth0()

• Main hook for authentication

• authorize()

• Initiate login

• clearSession()

• Logout

• user

• User profile object

• getCredentials()

• Get tokens for API calls

• isLoading

• Loading state

Common Use Cases:

• Login/Logout → See Step 5 above

• Secure token storage → Automatic with Auth0Provider

• Biometric authentication → Patterns Guide

• API calls with tokens → Patterns Guide

• Token refresh → Automatic with getCredentials()

References

• Auth0 React Native SDK Documentation

• Auth0 React Native Quickstart

• SDK GitHub Repository