Design And Implementation Of Mobile APP For Online Tourism Consumption Finance Platform

In recent years,with the improvement of consumption concept in China,the advance consumption of credit has become a trend of rapid development.At the same time,traditional credit institutions have become increasingly unable to meet the needs of today's young people in terms of threshold,risk management method and sense of distance.A new pattern of credit consumption,which is closer and more convenient for users and lowers the entry barrier,emerges as the times require.In this paper,adopting the i OS framework and taking Xcode as development environment,Objective-C as development language and SQlite as the local data storage and query,the authors have developed the mobile application for online tourism consumption finance platform based on IOS,realizing the functions of login,push service,positioning,browsing commodities,viewing commodity details,transaction and order managementThe main work of this paper is as follows:1)Based on the actual situation of tourism consumption finance,the requirement analysis was conducted,the use case model was established,the use case specification was stipulated and the non-functional requirements such as usability and performance were defined.And then the system architecture was designed from multiple views such as logical view,deployment view and data view.In the system,MVC mode was adopted and SQlite was used as a database.This paper focused on the development of the front-end i OS mobile APP.2)The key techniques including screen matching,location,asynchronous download and cache managerment were studied,and the corresponding solutions were put forward.The techniques realize the compatibility between browsing and imageload by isolating imageload thread from main thread.The cache managerment to prevent redundant requests is used to save network flow.The method of identifying device screen and screen layout is used to fit different screen size of i Phone.Through positioning service and geographic information encoding,the commodity departure city was identified.3)System was designed and implemented in detail.Based on the above research results and the adoption of the Objective-C language,Cocoa Touch framework and Xcode development environment,the mobile application for online tourism consumption finance platform based on IOS was successfully developed.Class diagrams and sequence diagrams ware given.This system was tested in functions and performance.After the system was released,the users have given good feedback;besides,no serious accident has occurred.At present,the total monthly loan sale amount reaches RMB 10 million,verifying that a fast and easy-to-use credit consumption pattern based on the travelling scene can bring values to users.