The Design And Implementation Of Small Window Module Based On Alibaba Yunos System

Customer manufacturers of Alibaba yunos system produced a lot of leather covers of mobile phones with sensors.They required that the cellphone screen should display some useful information and provide interactive operation through the leather cover. According to this requirement, we need to develope small window module on yunos system to meet this demand. This paper describes the design and the development of the small window module based on yunos system.To achieve this requirement, we did some studies on the telephony, keyguard, alarm clock modules of yunos system.We even did some adaptations and modifications on the framework layer of system to meet the functional requirements of the small window module duaring the preliminary work.On the basis of these studies, this paper has designed the structure of the small window module.We used the mediator design pattern and state machine to meet the needs of the small window module. This module is integrated in the system application directory and it belongs to the system applications in Android application architecture. Each sub-module is designed in a variety of ways. The module updates data by using the observer pattern to achieve the listening of the change of database, sending broadcast and querying local databases.Finally the small window module can display the main information and show the in-coming call.lt can also alert us time. We achieved to configure the view which guests design by using different resource apks. Finally we completed all the relevant requirements and passed all the test case.