Unity3D and Android Studio Integration

Question

Anyone know integrate Android with Unity Studio? (i will explain)
I created a simple scene in Unity (4.3.x on OSX Maverics) for testing. Has a 3D object and nothing els

Answer 1

Setting up an Android project is really simple. The document you linked is outdated and you don't need to move any files at all.

Unity

1. Goto File -> Build Settings -> Android and click Switch Platform
2. Enable Google Android Project
3. Click Export and choose where you want the Android project to be

Android Studio

1. Import or open the project you have just created with Unity
2. Done :)

If you want to display the Unity engine inside a subactivity, I suggest you take a look at this answer.

If you're completely unfamiliar with Android development, you should start with a simple "Hello World" app without complicating things by adding Unity to the mix. Just follow some of the official Android guides.