I recently started an app that has Facebook integration. The link that Rosalie and basicsharp sent you is a step-by-step guide to getting Facebook integrated into your app. It took me a while to understand how the API fits together. The following link explains the Graph API, which is the core API that you will be using: Facebook Graph API
Don't expect to get it right after 5mins, it will take time! Here is an overview of what you need to do to connect your app to facebook.
- Get the facebook-android-api via Git(Just download it, it's
extremely simple)
- Create an existing project using the facebook api
- Add Facebook Api as a reference via project options
- Get your app's Hash key via cmd prompt(This is the trickier part,
not going into it because there is an abundance of information
regarding this topic)
- Create Facebook app(On Facebook)
- Do the code - Facebook developer mobile
And there you have it.