基于Android平台的即时通讯系统的研究与设计_毕业论文设计.doc

本科毕业设计（论文） 基于Android平台的 即时通讯系统的研究与设计 学 院 自动化学院 专 业 网络工程 (网络与信息化方向) 年级班别 2009级（2）班 学 号 3109001332 学生姓名 张京 指导教师 郑日荣 2013 年 5 月  摘 要 随着Android系统的发展，越来越多的移动设备开始使用Android作为操作系统。Android系统内核基于Linux而来，应用层则使用基于Java代码的Dalvik虚拟机clipse开发出能够实现即时通讯的Android实例，并且能够传送文件。 关键词：即时通讯； 蓝牙； Android Abstract With the development of the Android system, more and more mobile devices start using Android as the operating system. Android system is based on the Linux kernel and the application layer is using Java-based code Dalvik virtual machine, therefore, the major programming language of Android system is Java. Instant Messenger (Abbreviated IM), refers to Internet-based real-time information exchange service. IM is the main way to communicate of Internet users; one can provide Internet users with an intuitive and convenient information exchange service. Bluetooth, one that supports short-range communication device radio technology, can include mobile phone, PDA, wireless headsets, laptop computers, related peripherals and other wireless information exchange between devices. This paper mainly research on the Android system and the Bluetooth protocol, by analyzing of a Bluetooth Android IM instance, to achieve the purpose of researching Android-based instant messaging system. Design an Android system based on Bluetooth, with the capable of instant messaging and file sending. Firstly, this paper analyzes framework and functional characteristics of Android system, and tells the basic operation of Android system. Secondly, Using Bluetooth protocol on the Android system and tells some key-codes. Finally, design an IM program through Eclipse based on the analysis of Bluetooth working examples which have the ability to transfer files. Keywords: Instant Messaging; Bluetooth; Android 目 录 摘 要 I Abstract II 1 绪论 1 1.1 关于ANDROID系统的背景以及研究目的 1 1.2 国内外研究状况 1 1.3 通过GOOGLE Androi