https://github.com/frederikprijck/xamarin-auth0-native-fb

Example integration of Native Facebook Login with Auth0 in a Xamarin application
https://github.com/frederikprijck/xamarin-auth0-native-fb

auth0 facebook xamarin

Last synced: about 1 month ago
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Example integration of Native Facebook Login with Auth0 in a Xamarin application

• Host: GitHub
• URL: https://github.com/frederikprijck/xamarin-auth0-native-fb
• Owner: frederikprijck
• Created: 2022-07-07T13:08:55.000Z (over 2 years ago)
• Default Branch: main
• Last Pushed: 2022-07-07T20:05:24.000Z (over 2 years ago)
• Last Synced: 2024-10-16T10:41:53.287Z (3 months ago)
• Topics: auth0, facebook, xamarin
• Language: C#
• Homepage:
• Size: 525 KB
• Stars: 2
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Facebook Native Authentication using Xamarin with Auth0

This example demonstrates how you can integrate Native Facebook authentication in a Xamarin Forms application when using Auth0.

In general, the flow is as follows:

- Authenticate using the Facebook SDK

- Exchange the FB Access Token for a FB Session Token

- Exchange the FB Session Token for Auth0 Token(s)

## Dependencies

This example does not use any Auth0 specific SDK as most of the code is specific to the Xamarin Facebook SDK for [Android](https://www.nuget.org/packages/Xamarin.Facebook.Android/) and [iOS](https://www.nuget.org/packages/Xamarin.Facebook.iOS). 

The integration with Auth0 is limited to a single call to `oauth/token` (as mentioned in [our documentation](https://auth0.com/docs/authenticate/identity-providers/social-identity-providers/facebook-native)), which you can see in `Auth0Client.cs`, in the `Auth0.NativeLogin.Auth0` project.

## Configuration

### Facebook configuration

Create an application at https://developers.facebook.com/ and enable Facebook Login.

### Auth0 configuration

Enable the Facebook Social Connection in your Auth0 dashboard and enable it for the Auth0 client you want to use as explained in [our documentation](https://auth0.com/docs/authenticate/identity-providers/social-identity-providers/facebook-native).

Open `app.xaml.cs` (inside `Auth0.NativeLogin/Auth0.NativeLogin`) and replace the `Domain` and `ClientId` values with the appropriate values.

### Android specific configuration

In order to run this project on an Android emulator (or device), you need to update `strings.xml` (inside `Auth0.NativeLogin/Auth0.NativeLogin.Android/Resources/values`) by filling in the Facebook App Id.

> ⚠️ It appears to be the case that you need to target `Android <=30` as the Xamarin Facebook SDK has a known issue that's fixed but not released: https://github.com/xamarin/FacebookComponents/issues/236

### iOS specific configuration

In order to run this project on an iOS emulator (or device), you need to update `Info.plist` (inside `Auth0.NativeLogin/Auth0.NativeLogin.iOS`) by filling in the Facebook App Id.