ajax使用它可以构建更为动态和响应更灵敏的Web应用程序。该方法的关键在于对浏览器端的Javascr ipt、DHTML和与服务器异步通信的组合。-building can use it more dynamic and more sensitive response of Web applications. The method is the key to the browser Javascr ipt, DHTML and asynchronous communication server

Web Service主要为了使原来各个孤立的站点（B/S架构的软件）之间的信息能够相互通信、共享而提出的一种接口。-Web Service primarily to enable the various isolating the original site (B/S structure software) communicate with each other between the information can be shared and made an interface.

里面包含了webservice的服务端和安卓客户端,双方可以进行数据通信,例如用户的注册,登录,文件的上传下载等等.-Which contains a webservice client service and Android client, the two sides can communicate data, such as user registration, login, uploading and downloading files and so on.