The Study Of Design And Implementation Of Collaborative Graphic Enterprise Information System Based On The IOS

The information industry, the Inter-communications between agencies and employees, and the efficiency of production and work have made great improvements ever since the rise of third and fourth generation of mobile communications technology..Undoubtedly the information communication and the instant messaging were deeply rooted in people’s daily work and life when handset multimedia program graphics exchange is common scene.This study initiated from the communication development of the iOS mobile devices, then analyzed the similarities and differences of graphics data and access methods, further explained the design and implementation of enterprise collaborative graphic information system based on the iOS, hereinafter referred to as enterprise graphic information systems. The main contents include:1.Discussed the XMPP protocol of enterprise graphic formation system. Firstly this protocol contained 2 layers of security mechanism, the transport layer security and the simple authentication security layer, to ensure the safety of enterprise graphic information system. Moreover it achieved complicated interactive mode and multimedia data transport for built upon extensible markup language to acquire excellent expansion capability. And due to its cross network segment and firewall penetrated communication functions advanced enterprise users will be thoroughly guarded and protected.2. Studied on iOS system’s development language--ObjectC, and the development framework of its XCode development tools – CocoaTouch, then built the MVC development framework on it. Implemented data transport and method invocation between classes by loosely coupled manner to enhance its expansibility, flexibility and accessibility.3. Implemented graphic data transport protocol based on XMPP. its file transportation progress is similar to negotiation optimization algorithm’s four steps: negotiation, optimize selection, confirmation and transport..Firstly selected optimal path and communication server after certainty of bilateral communication validation, then implemented data transport scheme which provide cross network segment and firewall penetration data transport, lastly defined graphic data message format to conduct real graphic data transport. Furthermore the paper studied the extended XMPP protocol implementation scheme in sending notification to achieve multimedia message format and transport.4. Discussed three types of thread mechanisms of IOS system(NSthread 、NSOperation、GCD), then chose NSThread as communicate thread manner to separate the network communication and interface interaction to ensure fluent system interaction. What’s more it employed caching storage to send network data to boost custom experience and acquire faster data display in the interface.This paper carried out the development and implementation of graphic information system of enterprise under the guidance of software engineering project management. In the final test, the system conforms to expected demands and operation standards of the project and operated functionally available and stable.