The Design and Implementation of Mobile Online Testing System based on Android Platform

The development of the system is mainly for students in the Android mobile platform for online testing of each course.This paper first gives the environment of the development of the testing system, analyzes the system structure of the online testing system, expounds the basic development ideas of the system, focuses on the entity class, layout file, activity class, data layer and business layer.The relationship of the data layer, activity, service layer three is analyzed. The implementation steps of the system are listed, and the three key algorithms used in the development process are described, which are parsing the test questions, scrambling the order of questions , and showing the remaining time algorithm.