基于Android的移动互联网应用的关键技术研究

发布时间：2018-03-03 05:11

本文选题：移动互联网　切入点：Android　出处：《华南理工大学》2014年硕士论文　论文类型：学位论文

【摘要】：近年来，以移动应用为主要入口的移动互联网正逐渐地渗透到人们生活的方方面面。作为移动应用载体的Android平台，凭借着开源、高度定制性等优点受到越来越多人的喜爱，攻占了超过一半的全球智能手机市场。然而，我国移动应用市场在高速发展的过程中存在着一些问题，移动平台碎片化、移动网络流量昂贵、带宽与传统网络差异巨大、应用市场恶性竞争与技术隔离等一系列问题，增加了开发难度，间接地限制了移动应用的用户体验。本文立足于我国移动互联网发展中所受限的客观因素，重点研究分析了移动应用在Android移动平台上的关键网络通信技术，并提出更适合当今移动网络环境的改进性方案。首先，论文对Android客户端中的限量缓存技术展开分析，揭示了缓存容量在临界情况下频繁置换的抖动问题，，提出了通过预加载和双阈值的技术解决这类问题的抗抖动缓存方案。然后，在移动数据交换上，针对当前移动网络的流量和吞吐量问题，提出以空间效率高的序列化数据格式取代文本型数据格式进行数据传输，具体研究了序列化数据格式Protocol Buffer的实现原理及其在Android平台上的使用。最后，论文对移动应用中的P2P通信在复杂移动环境上的组建策略作出了详细的研究分析，实现在Android平台上的基于NAT检测技术的成功率高、容错能力强的自适应P2P通信框架。经测试实验证明，在通用的用户场景中，抗抖动缓存技术不仅有效地减少缓存置换操作次数，而且合理地利用用户空闲时间；相对于XML和JSON这类文本型数据格式，Protocol Buffer拥有更高的编解码效率与空间性能；自适应通信框架能够根据客户端信息执行最优的P2P组建策略，在组建失败的情况下能自动改用兼容通信方式，可用性高。
[Abstract]:In recent years, the mobile Internet, which takes the mobile application as the main portal, is gradually infiltrating into every aspect of people's life. As a carrier of mobile application, the Android platform is more and more popular by more and more people with the advantages of open source and high customization. It dominates more than half of the global smartphone market. However, in the process of rapid development of mobile application market in China, there are some problems, such as fragmentation of mobile platform, expensive traffic of mobile network, huge difference between bandwidth and traditional network. A series of problems, such as vicious competition and technology isolation in the application market, increase the difficulty of development and indirectly limit the user experience of mobile application. This paper is based on the objective factors restricted by the development of mobile Internet in China. The key network communication technology of mobile application on Android mobile platform is studied and analyzed, and an improved scheme which is more suitable for today's mobile network environment is put forward. Firstly, the limited cache technology in Android client is analyzed, and the jitter problem of frequent permutation in critical case is revealed. In this paper, we propose an anti-jitter buffer scheme to solve this problem by pre-loading and dual-threshold technology. Then, in the case of mobile data exchange, aiming at the current mobile network traffic and throughput problems, This paper proposes to replace text data format with serialized data format with high spatial efficiency. The realization principle of serialized data format Protocol Buffer and its application on Android platform are studied in detail. This paper makes a detailed research and analysis on the construction strategy of P2P communication in complex mobile environment in mobile applications, and realizes an adaptive P2P communication framework based on NAT detection technology on Android platform with high success rate and strong fault-tolerant ability. The test results show that in general user scenarios, anti-jitter caching not only effectively reduces the number of cache replacement operations, but also makes reasonable use of the user's idle time. Compared with other text-based data formats such as XML and JSON, Buffer has higher coding and decoding efficiency and spatial performance. In the case of build failure can be automatically converted to compatible communication mode, high availability.
【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP393.01;TN929.5

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