Design And Implementation Of After-sales Service System Client Of Lpgpispenser On Android

At present, office automation is still dominated by desktop software,due to the limitations of fixed network, office automation is often subject to PC and relatively fixed places. At some circumstances, real-time is in need, but traditional office automation meets its weakness. Since the mobile Internet era has come, applications run on cell-phones are accepted not only by people but enterprise as well. From what has been discussed above, this paper designed and implemented a mobile application to meet the business need for after-sales service.First of all, the main technology of Android client is studied, including interface, network, storage and so on. And the methods about inter-thread communication under Android platform are studied and compared, and an asynchronous programming model suitable for this system is proposed. In the third chapter, the communication interface between the client and the server is researched and implemented. The main differences between the existing interface design styles are compared and analyzed, and the main carriers of the interface are compared and analyzed. Based on the research results, the implementation of system communication is given. Finally, in the fifth chapter, the paper focuses on the implementation of the whole system, analyzes the function of the application from the user's needs,then designs the application architecture, determines the technology selection of the key modules, and combines the asynchronous programming model of the second chapter, The network interface in Chapter 3 and the digital watermark in Chapter 4 give the realization of the hard and difficult part,including: data analysis part, complex interface part, network request and cache part, watermark encryption part and so on.