【正文】 子工業(yè)出版社，． [11] 丁永明．基于Android平臺(tái)移動(dòng)學(xué)習(xí)軟件的研究與實(shí)現(xiàn)[J]．?dāng)?shù)字通信世界，2011． [12] 馬志強(qiáng)．基于Android平臺(tái)即使通信系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn)．北京交通大學(xué)，2009． 附錄A 英文原文Android User Interface DevelopmentJason Morris With the rapid development and integration of mobile rrlunication and Internet，GPRS wireless networks making high—speed access to the Intemet bees reality such webbased realtime way which other online tigers to interact with,is favored by demanding real—time business and service industries with its convenient features．Traditional real．Time munications applications are mostly realized in the PC side，but with the development of wireless transmission networks，and the introduction of intelligent operating platform provides a hardware foundation mobile devices in realtime munications system has bee the new 3G business highlights．Instant messaging is based on applications of Intemet protocol，which can enable users to use different devices to municate．And with the constant popularity of mobile phones as well as the continuous performance improvement，it is time for real—time munication systems to transplant from the traditional PC—Mobile Additionally in the market of China’s huge mobile phone users，mobile phone users using of instant messaging software is increasing．Currently mobile operating systems ar e too closed，and the maj or instant messaging software munication protocols used are not unified．Android is based on the opensource Linux mobile operating system platform and XMPP is a XMLbased opensource instant messaging protocol，S0 Android and XMPP—based instant messaging systems have good application prospect．Google Android is a Linuxbased platform for developing opensource phone operating system (registered trademark in China called ANZHI。). It includes operating systems, user interface and applications mobile phone work required by the software, but there is no past, the exclusive right to impede innovation and barriers to mobile industry, called mobile terminal is the first to create a truly open and plete mobile software. Google and Open Handset Alliance to develop the Android, the alliance by including China Mobile, Motorola, Qualm and TMobile, including more than 30 technology and the position of a leader in wireless applications. Google with operators, equipment manufacturers, developers and other interested parties to form deeplevel partnerships, hoping to establish a standardized, open software platform for mobile phones in the mobile industry to form an open ecosystem . It uses software stack layers (software stack, also known as the software stack) architecture, is divided into three parts: the core of the underlying Linuxbased language developed by the c, only basic functions. Middle layer consists of library. Library and Virtual Machine Virtual Machine, developed by the C +. At the top are a variety of applications, including the call procedures, SMS procedures, application software is developed by the panies themselves to write java.To promote this technology, Google, and dozens of other phone pany has established the Open Handset Alliance (Open Handset Alliance).Characteristic?application framework to support ponent reuse and replacement? Dalvik virtual machine specifically for mobile devices is optimized? Internal integrated browser, the browserbased opensource WebKit engine ? optimization of 2D and 3D graphics library includes graphics library, 3D graphics library based on OpenGL ES (hardwareaccelerated optional)? SQLite for structured data storage ? Multimedia support includes the mon audio, video and static image file formats (such as MPEG4, , MP3, AAC, AMR, JPG, PNG, GIF) ? GSM phone (depending on hardware) ? Bluetooth Bluetooth, EDGE, 3G, and WiFi (hardware dependent) ? Camera, GPS, pass, and accelerometer (hardware dependent) ? Rich development environment including a device emulator, debugger, memory and performance analysis charts, and the Eclipse integrated development environment pluginsApplicationsA core Android application package together with the release of the application package, including client, SMS short messaging program, calendar, maps, browser, contact management procedures. A ll applications are written using JAVA.Android Application Framework Developers have full access to core applications used by the API framework. The application framework designed to simplify the reuse of software ponents。 any application can publish its functional blocks and any other applications can use the function block its release (but must follow the framework of security restrictions). Reuse mechanism allows the application form can be user replaced.All of the following applications by the position of a range of services and systems, including:? an expanded view (Views) can be used to build applications, including a list of (lists), grid (grids), text boxes (text boxes), buttons (buttons), and even an embeddable web browser ? Content Manager (Content Providers) allows applications to access data from another application program (such as the contact database), or to share their own data. ? A resource manager (Resource Manager) to provide access to noncode resources, such as local strings, graphics, and hierarchical file (layout files).? a notification manager (Notification Manager) allows applications to customers in the status bar display notification information.? an activity class Manager (Activity Manager) to manage the application life cycle and provides mon navigation rollback feature.Ordering the systemOrdering the system information using automated software tools to achieve la carte, side dishes, stir fry vegetables to the transfer of all management processes。 pletion point, the puter management menu, point the menu and the kitchen, frontend checkout synchronization print。 achieved without the menu paperbased operation。 backstage manager of inquiry。 warehouse inventory management and