As the most popular smartphone operating system , Android OS [2] is a widely used platform , in addition to smartphones, the device is also equipped with the system including tablets , smart cameras, smart TV, etc. , so in under the platform to achieve a more meaningful way via WiFi file transfer system .
Android is a Linux-based open resource operating system, mainly used in portable devices. In the first quarter of 2011, for the first time, Android system exceeded Symbian and ranked first in global market share. In February 2012, Android dominated the intelligent mobile phone operating system with the market share up to 52.5% global market and 68.4% in China. With its rapid development, more and more routine software need to be implemented on Android platform.
In this paper, a file transfer tool based on Android platform is designed and developed to support upload and download of multi-protocol files. Users can transfer files by verifying and logining servers.
1.2 Status quo and development trends of domestic and international research
Android is a Linux-based open resource operating system. It is developed to comprise all software required in mobile phone work including operating system, user interface, and applications, without any proprietary obstacles to hinder Mobile Innovation. It is developed by Google and an open mobile phone alliance, a 30 more leading companies in technology and wireless applications including China Mobile, Motorola, Qualcomm, HTC electric and T-Mobile. By building a deep partnership with operators, equipment manufacturers, developers and other parties concerned, Google is in the hope of creating a standard, open mobile software platform, and an open ecosystem in the mobile industry.
In 21st century, the era witnesses a transition from industrial economy to knowledge and information economy. The increasing demand of information promotes the rapid development of computer communication.
Although the network is used more frequently and widely, people mainly use it for two purposes:
(1)Communication
(2)Resource sharing
As an important member of network, LAN serves as the bond connecting user with outside world, and also an important channel to communicate and share resources for short-distance users. Under this circumstance, how to provide more convenient communication and faster resource sharing for LAN users has become one of network research priorities.
With the rapid development of Internet technology, computer communication has brought great changes to people. People often need to transfer files in work, which requires hardware devices like mobile disks or Internet servers. This is a problem facing many large-scale internal network users, for this file transfer mode means wastes in money and network resources, and work efficiency, and also a network weakness for viral invasion. To facilitate resource sharing in the LAN hosts, developing a LAN-based file transfer tool to realize file exchange in internal network has become a task of top priority.
Actually motivated by the practical needs, people have accessed to various kinds of file transfer tools, such as QQ、UC、MSN、Internet mail. Though they have been widely used, all these tools are greatly dependent on remote servers and can not provide secure point to point transmission. Some tools even need mobile disks or other LAN hardware devices, and the transmission efficiency and security is restricted. In this situation, developing a simple and practical LAN-based file transfer tool with compatibility with Windows system has become a pressing matter of the moment.
At present, many domestic and foreign enterprises have limited knowledge and use of LAN file transfer system. In itself, file transfer system technology has developed far from satisfaction both theoretically and practically speaking, owing to its complexity, variability, and low safety.
The development of science and technology keeps promoting the development of file transfer systems. For example, internal network centered resource sharing systems like QQ and UC has entered a high-speed developing stage. Design and Development of An Android-based File Transfer Tool(2):http://www.751com.cn/jisuanji/lunwen_18091.html