[android] ubuntu开发环境

# 下载安装eclipse
http://www.eclipse.org/downloads/

# android sdk
http://developer.android.com/sdk/index.html
tar zxvf android-sdk_r20.0.3-linux.tgz
cd android-sdk-linux/
tools/android update sdk

#　ADT安装(在eclipse里)
https://dl-ssl.google.com/android/eclipse/ 　在线
http://developer.android.com/sdk/eclipse-adt.html　下载解压