Android Studio

or

Eclipse?

I know that eclipse is pretty dead, but one my friends still uses it. I know for sure Android Studio has more things in it. Which do prefer?

Android Studio is only for Android apps. Eclipse is far from dead and for a helluva lot more than Android apps

What I use to code depends on the language:

Anything .NET related: Visual Studio

Java: Eclipse or just a good text editor

Everything else (Python, PHP, T-SQL, PL/SQL): a good text editor (Notepad++, Kate, Geany, Vim, or Nano)