Design And Implementation Of The Android System Log Storage And Viewing Tools

November5,2007, opening up a handheld device Alliance (Open Handset Alliance) since the establishment of the Android operating system, its rapid evolution and growth, and development tools for the Android system is also in a stage of rapid development, November22,2010, Android Tools ProjectSite establishment, has introduced a new version of development tools.Developers to leverage a variety of text editor to view the log file, such as Uedit32, Source Insight, Emacs, but the face of the line number of the log file, a text editor is plain text to find, can not be screened for Logcat log formatand filtering, such as Tag, process ID and so on. If you have one can view the log to facilitate rapid filtration developers are concerned about the contents of the tool will solve this problem view the log. But so far, the Android official launch of offline log viewer tool, developers can view the log file in text form, or some third-party tools, just some third-party tools in the operating habits DDMS,(Dalvik Debug Monitor Server) The tools have more differences, the user is not approachable.This paper discusses the working principle and view of the Android logging system to save the log, the log file format, summarizes the existing log storage tools and viewing tools, designed and implemented a log storage tool (Logcat Recorder), and an Android operating system Logcat log files the offline tools (AndroidLogcatViewer). This system requires a tool to run the Android system, used to store logs; another system running on the PC side, used to view recorded log files, it is similar to the mode of operation of the DDMS, you can view the log files of the Android system, a graphical in the form of display, by setting filters to quickly find a lot of log log developers are concerned about, and then upgrade to locate, analyze and solve problems faster.The project source code hosted on Google Code site, to the Apache License, Version2.0protocol open source. An efficient offline log viewer tool, not only for the Android open-source community to get to some of the concerns of the open source community, support, and promote and practice the Google Code hosted open source software development model.