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What is android? android is a software platform and operating system for mobile devices which is based on the Linux kernel.

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android technology | android | technology | computer science topic | android technology assignment | operating system | open handset alliance | mobile phone technology | mobile phone OS | OS | Android SDK | android technology advantages | google android

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Android Technology (Computer Science Topic) PowerPoint Presentation

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Description : What is android? android is a software platform and operating system for mobile devices which is bas... Read More

Tags : android technology | android | technology | computer science topic | android technology assignment | operating system | open handset alliance | mobile phone technology | mobile phone OS | OS | Android SDK | android technology advantages | google android

Published on : Feb 28, 2016
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Android Technology (Computer Science Topic)
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Slide 1 - Android Technology(Computer Science Topic)
Slide 2 - 1. Introduction 2. Platform 3. Software development 4. Overall evaluation Main topics
Slide 3 - What is Android? A software platform and operating system for mobile devices Based on the Linux kernel Developed by Google and later the Open Handset Alliance (OHA) Allows writing managed code in the Java language Possibility to write applications in other languages and compiling it to ARM native code (support of Google? No) Unveiling of the Android platform was announced on 5 November 2007 with the founding of OHA 1. Introduction (1)
Slide 4 - 1. Introduction (2) What is the Open Handset Alliance (OHA)? (1) → It's a consortium of several companies
Slide 5 - 1. Introduction (3) What is the Open Handset Alliance (OHA)? (2) Devoted to advancing open standards for mobile devices Develop technologies that will significantly lower the cost of developing and distributing mobile devices and services
Slide 6 - 2.1 Hardware Android is not a single piece of hardware; it's a complete, end-to-end software platform that can be adapted to work on any number of hardware configurations. Everything is there, from the bootloader all the way up to the applications. 2. Platform (1)
Slide 7 - 2.2 Operating System(s) Android uses Linux for its device drivers, memory management, process management, and networking. The next level up contains the Android native libraries. They are all written in C/C++ internally, but you’ll be calling them through Java interfaces. In this layer you can find the Surface Manager, 2D and 3D graphics, Media codecs, the SQL database (SQLite), and a native web browser engine (WebKit). Dalvik Virtual Machine. Dalvik runs dex files, which are coverted at compile time from standard class and jar files. 2. Platform (2)
Slide 8 - 2.3 Network Connectivity  It supports wireless communications using: GSM mobile-phone technology 3G 802.11 Wi-Fi networks 2. Platform (3)
Slide 9 - 2.4 Security  Android is a multi-process system, in which each application (and parts of the system) runs in its own process. Most security between applications and the system is enforced at the process level through standard Linux facilities, such as user and group IDs that are assigned to applications. Additional finer-grained security features are provided through a "permission" mechanism that enforces restrictions on the specific operations that a particular process can perform, and per-URI permissions for granting ad-hoc access to specific pieces of data. 2. Platform (4)
Slide 10 - 3.1 Development requirements Java Android SDK Eclipse IDE (optional) 3. Software development (1)
Slide 11 - 3.2 Programming Language(s) Java – officially supported C/C++ – also possible but not supported 3. Software development (2)
Slide 12 - 3.3 IDE and Tools Android SDK Class Library Developer Tools dx – Dalvik Cross-Assembler aapt – Android Asset Packaging Tool adb – Android Debug Bridge ddms – Dalvik Debug Monitor Service Emulator and System Images Documentation and Sample Code 3. Software development (3) Eclipse IDE + ADT (Android Development Tools) Reduces Development and Testing Time Makes User Interface-Creation easier Makes Application Description Easier
Slide 13 - 4.1 Applications These are the basics of Android applications: Android applications are composed of one or more application components (activities, services, content providers, and broadcast receivers) Each component performs a different role in the overall application behavior, and each one can be activated individually (even by other applications) The manifest file must declare all components in the application and should also declare all application requirements, such as the minimum version of Android required and any hardware configurations required Non-code application resources (images, strings, layout files, etc.) should include alternatives for different device configurations (such as different strings for different languages) 4. Overall evaluation (1)
Slide 14 - 4.2 Advantages There are a host of advantages that Google’s Android will derive from being an open source software. Some of the advantages include: The ability for anyone to customize the Google Android platform The consumer will benefit from having a wide range of mobile applications to choose from since the monopoly will be broken by Google Android Features like weather details, opening screen, live RSS feeds and even the icons on the opening screen will be able to be customized As a result of many mobile phones carrying Google Android, companies will come up with such innovative products like the location In addition the entertainment functionalities will be taken a notch higher by Google Android being able to offer online real time multiplayer games 4. Overall evaluation (2)
Slide 15 - 4.3 Limitations Bluetooth limitations Android doesn't support: Bluetooth stereo Contacts exchange Modem pairing Wireless keyboards But it'll work with Bluetooth headsets, but that's about it Firefox Mobile isn't coming to Android Apps in Android Market need to be programmed with a custom form of Java → Mozilla and the Fennec won't have that 4. Overall evaluation (3)
Slide 16 - 4.4 Future possibilities Google Android Sales to Overtake iPhone in 2012 The OHA is committed to make their vision a reality: to deploy the Android platform for every mobile operator, handset manufacturers and developers to build innovative devices Intel doesn’t want to lose ownership of the netbook market, so they need to prepare for anything, including Android More Android devices are coming and some will push the envelope even further 4. Overall evaluation (4)
Slide 17 - 4.5 Conclusion We can only hope that the next versions of Android have overcome the actual limitations and that the future possibilities became a reality 4. Overall evaluation (5)