Android Studio is the new development environment for Android (officially recommended). It’s based on IntelliJ IDEA (Integrated Development Environment from JetBRAINS). You can still use Eclipse IDE though (however, it may not be supported once the Android Studio comes out of beta) but Android Studio brings lots of new features and improvements (Advanced Android code …
Setup Android Develpment Environment (install => JDK + Eclipse + ADT Plugin + Android SDK) in Ubuntu 12.04 LTS (Precise Pangolin)!
Wanna develop Android Apps using GNU/Linux ? Install and configure Android SDK on Ubuntu with Eclipse IDE.