开始：练习第一个android应用，叫它 weiYamba
一、环境搭建
google提供了集成eclipse、android sdk tools软件包，参见 http://developer.android.com/sdk/index.html
It includes only the core SDK tools, which you can use to download the rest of the SDK packages, using the Android SDK Manager.
To develop an Android app, you also need to download at least one Android platform and the latest SDK Platform-tools (usb driver may download).
问题是：dl-ssl.google.com根本无法访问 ?
业界良心，提供host绑定地址 http://my.oschina.net/u/877463/blog/111708，且设定为http非https
203.208.46.146 dl.google.com
203.208.46.146 dl-ssl.google.com
关于android-sdk各个目录的解释