Android基础知识

本文介绍开发Android应用的基础知识。包括如果下载，安装，eclipse的配置，ADT的升级与配置等。

第一步，要开发Android应用，首先需要下载SDK，地址为：http://developer.android.com/sdk/index.html

第二步，下载并安装Eclpise，注意版本问题，Android3.1版本开发需要eclipse3.5以上版本支持。下载地址为：http://www.eclipse.org/downloads/

第三步，下载并安装 Android Development Tools（ADT） Plugin for Eclipse

1. Start Eclipse, then select Help > Install NewSoftware....
2. Click Add, in the top-right corner.
3. In the Add Repository dialog that appears, enter "ADT Plugin" for the Name and thefollowing URL for the Location:

   https://dl-ssl.google.com/android/eclipse/

4. Click OK

   Note: If you have trouble acquiring the plugin, try using "http" in the Location URL,instead of "https" (https is preferred for security reasons).

5. In the Available Software dialog, select the checkbox next to Developer Tools and clickNext.
6. In the next window, you'll see a list of the tools to be downloaded. ClickNext.
7. Read and accept the license agreements, then click Finish.

   Note: If you get a security warning saying that the authenticity or validity ofthe software can't be established, click OK.

8. When the installation completes, restart Eclipse.