2. Setup Facebook App

Before you can use gdx-facebook you have to set up a new app at https://developers.facebook.com/apps/

Additional steps:

General

1. Got Settings -> Advanced -> Enable "Native or desktop app?"
2. Go to Products -> Facebook Login -> Client OAuth Settings and add to Valid OAuth redirect URIs: https://www.facebook.com/connect/login_success.html

Android

1. Add a new platform Android.
2. Enable Single Sign On
3. Add the key hashes of your debug and certificate. Read this to find out how to do that. https://developers.facebook.com/docs/android/getting-started/
4. Enable Deep Linking (only required when using Game Requests feature)

iOS

1. Add a new platform iOS
2. Enable Single Sign On
3. Add the Bundle ID. (Must be same as your robovm.properties->app.id value.)
4. Enable Deep Linking (only required when using Game Requests feature)

GWT / HTML

1. Add a new platform Website
2. Add the Facebook Login product to your app and add each URL your app is hosted to Valid O-Auth redirect URL list. Like: http://localhost:8080/html/