一个导航软件性能优化方案的设计与实现

发布时间：2018-05-26 01:47

本文选题：行动导航 + Android　；参考：《北京邮电大学》2013年硕士论文

【摘要】：随着科技的进步和交通运输业的不断发展,不同城市,地区甚至国家之间的人们联系越来越紧密。频繁的出差和异地生活使得人们更加要求出行的方便性。现如今,随着交通运输业和建筑产业的迅猛发展,城市里交通网星罗密布,高楼林立。过去仅仅依靠经验和人脑的记忆力来完成的对出行路线的选择和方向判断的方式,在现如今的生活中显得越发的难以适应。因此在这种情况下,可以随时随地为人们提供行动导航的手持导航设备的发展已经成为大势所趋。本文研究的内容是研究一款已经由第三方公司设计完成的,基于Android系统的行动导航软件的性能优化工作。原有系统主要存在的问题是在地图显示上存在性能上的缺陷,即在系统定位到一个新的位置后,地图下载不能及时完成,经常会在需要显示地图的部分显示出空白块,造成很不好的用户体验。本文所要解决的主要问题就是通过调研原有系统的代码的实现和当前国内外优秀案例的实现机制,并在不对服务器进行修改和不影响系统其他功能的基础之上,找到原系统在设计上的不足之处,提出可行的优化方案并完成优化方案的设计和实现。本文的完成过程严格遵照了软件开发的流程。首先是通过对原有代码和技术可行性的调研工作,再根据客户需求完成需求分析,确定优化的基本方案；进行概要设计,细化详细的业务流程和数据结构,详细设计的部分重点阐述了本项目中涉及到的技术重点和地图绘制的详细过程,随后完成了代码实现和基本的测试工作。在整个项目进行过程中,主要完成的研究成果有：导航系统中地图下载和地图绘制模块的优化方案的制定,解析从服务器获取的地图块的数据,Android系统对于电子地图绘制的详细方法和电子地图在绘制过程中的坐标转化问题。
[Abstract]:With the progress of science and technology and the continuous development of transportation, people in different cities, regions and even countries are more and more connected. Frequent travel and living in different places make it more convenient for people to travel. Nowadays, with the rapid development of transportation and construction industry, the city traffic network is full of stars and tall buildings. In the past, the choice of travel route and the way of direction judgment, which used to rely solely on experience and memory of human brain, are becoming more and more difficult to adapt to in today's life. Therefore, the development of handheld navigation devices, which can provide mobile navigation for people at any time and anywhere, has become the trend of the times. The content of this paper is to study the performance optimization of a mobile navigation software based on Android system, which has been designed and completed by a third party company. The main problem of the original system is that there is a defect in the performance of the map display, that is, after the system is located in a new location, the map download can not be completed in time, and the blank block is often displayed in the part that needs to display the map. Create a very bad user experience. The main problem to be solved in this paper is to investigate the implementation of the original system code and the implementation mechanism of the current excellent cases at home and abroad, and on the basis of not modifying the server and not affecting other functions of the system. To find out the shortcomings of the original system in the design, put forward a feasible optimization scheme and complete the design and implementation of the optimization scheme. The completion of this paper strictly follows the process of software development. First of all, through the original code and technical feasibility research work, then according to customer needs to complete the requirements analysis, determine the basic optimization scheme; outline design, detailed business processes and data structure, The detailed design focuses on the key technology involved in this project and the detailed process of map drawing, and then completes the code implementation and basic testing work. In the course of the whole project, the main research results are as follows: the optimization scheme of map download and map drawing module in the navigation system, This paper analyzes the data of the map block obtained from the server and the detailed method of the electronic map drawing in Android system and the coordinate transformation of the electronic map in the course of drawing.
【学位授予单位】：北京邮电大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：P283.7;TP311.52

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