Steps you can follow to quickly setup a new Android environemnt.
Install Homebrew:
ruby -e "$(curl -fsSL https://raw.github.com/Homebrew/homebrew/go/install)"
brew install maven brew install gradle brew install ant brew install android-sdk brew install android-platform-tools brew install android-ndk
android update sdk --no-ui Setup HAXM export ANDROID_HOME=/usr/local/opt/android-sdk