unity+vuforia+android studio

hi!

I want to import my unity+vuforia project into an existing project of Android studio! is there any reference, which could help me with this? Because i only find how to integrate unity with eclipse and not with android studio. Do you think that the best solution is to turn my android project(unity+vuforia) as module/library and then insert it as a dependency in my first android project? [ i've created my application menus, buttons, different activities with maps and now i want when user press a specific button to open unity project (with camera+vuforia plugin) see the augmented content, and then on the press of the exit button, to return to the previous activity of android]

Thanks