Login with facebook app android

Question

I am creating an app that login with facebook, already downloaded the sdk facebook imported in ecplise, I created my project and now I need to import, so far so good I followed this tutorial

http://www.devmedia.com.br/integrando-aplicacoes-android-com-o-facebook/27567

I was able to point the sdk of the face with my project, but not merge anything and when I will import for example import with.facebook.android.Facebook; it does not recognize