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  1. 1. ANDROIDBy Pooja Sree.K 11MI012 II-ME-SE
  2. 2. Agenda• What is android?• Versions• Features• Android architecture• Description• Interface• Applications• Security and Privacy• Android mobile phones
  3. 3. What is android?• Linux based operating system developed for smart phones and tablet computers.• Developed by Google in conjunction with Open Handset Alliance.• Android Open Source Project (ASOP)• Provides tools and API’s to begin developing applications using Java programming language.
  4. 4. Versions• Android was developed by Google and Open Handset Alliance.• The version updates:  Android 1.0  Android 1.1  Android 1.5 (Cupcake)  Android 1.6 (Donut)  Android 2.0/2.1(Éclair)  Android 2.2.x (Froyo)  Android 2.3.x (Gingerbread)  Android 3.x (Honeycomb)  Android 4.0.x (Ice-cream Sandwich)  Android 4.1.x (Jelly Bean)
  5. 5. Android 1.0• First commercial version• Released on September23, 2008• Device that runs Android 1.0 is HTC Dream (G1)• The features available in the devise are:• Android Market application downloads and updates through the market app• Web Browser to show, zoom and pan full HTML and XHTML web pages• Access to web email servers, supporting POP3, IMAP4 and SMTP.• Gmail synchronization with Gmail app• Google maps with latitude and street view to view maps and satellitte imagery
  6. 6. Android 1.1• Released on February 9,2009• Initially released for HTC Dream only• Android 1.1 was known as ”Petit Four”• This update resolved bugs• Features included ability to save attachments in messages• Marquee for system layouts• Longer in-call screen timeout default when using the speakerphone, plus ability to show/hide dial pad
  7. 7. Android 1.5 Cupcake• Released on April 30, 2009• This version was based on Linux kernal2.6.27• Features included are – Support for Widgets-miniature application views that can be embedded in other applications (such as the Home screen) and receive periodic updates – Video recording and playback in MPEG-4 and 3GP formats – Auto-rotation operation – Ability to upload videos in Youtube and photos to Picasa
  8. 8. Android 1.6 Donut• Released on September 15, 2009• This version was based on Linux kernel 2.6.29• Voice and text entry search enhanced to include bookmark history, contacts, and the web• Multi-lingual speech synthesis engine to allow any Android application to "speak" a string of text• Easier searching and ability to view app screenshots in Android Market• Updated technology support for CDMA / EVDO,802.1x, VPNs, and a text-to-speech engine• Support for WVGA screen resolutions
  9. 9. Android 2.0/2.1Eclair• Released on October 26, 2009• Exchange email support, with combined inbox to browse email from multiple accounts in one page• Bluetooth 2.1 support• Ability to search all saved SMS and MMS messages• Delete oldest messages in a conversation automatically deleted when a defined limit is reached• Improved Google Maps 3.1.2• Addition of live wallpapers, allowing the animation of home-screen background images to show movement
  10. 10. Android 2.2.x Froyo• Released on May 20,2010• Froyo-Frozen Yogurt• Android 2.2.x was based on 2.6.32• Features include:• Speed, memory and performance optimizations• Support for the Android Cloud to Device Messaging (C2DM) service, enabling push notifications• Improved application launcher with shortcuts to Phone and Browser applications• USB tethering and Wi-Fi hotspot functionality
  11. 11. Android 2.3.x Gingerbread• Released on December 6, 2010• Gingerbread was based on Linux kernel 2.6.35• Updated user interface design with increased simplicity and speed• Native support for SIP VoIP internet telephony• Faster, more intuitive text input in virtual keyboard, with improved accuracy, better suggested text and voice input mode• Enhanced copy/paste functionality• Support for multiple cameras on the device, including a front-facing camera
  12. 12. Android 3.x Honeycomb• Honeycomb was released on February 22, 2011• This is the first tablet android updated• Based on Linux kernel 2.6.36• Motorola Xoom tablet released on February 24,2011 based featuring this version• Optimized tablet support with a new virtual and “holographic” user interface• Added System Bar, featuring quick access to notifications, status, and soft navigation buttons, available at the bottom of the screen• Support for multi-core processors• Ability to encrypt all user data
  13. 13. Android 4.0.x Ice Cream Sandwich• Ice cream sandwich was based on Linux kernel 3.0.1• Released on October 19, 2011• Updated features include:• Soft buttons from Android 3.x are now available for use on phones• Separation of widgets in a new tab• Easier-to-create folders, with a drag-and-drop style• Pinch-to-zoom functionality in the calendar• Improved error correction on the keyboard• Ability to access apps directly from lock screen
  14. 14. Android 4.1.x Jelly Bean• Jelly bean was introduced by Google on June 27,2012• Based on Linux kernel 3.0.31• Update for improving the functionality and performance of user interface• Project Butter – performance improvement which uses touch anticipation, triple buffering extended vsync timing• Includes features like enhanced accessibility, bi directional text, expandable notifications• High resolution Google+ contact photos• One-finger gestures to expand/collapse notifications
  15. 15. Features• The features present in android mobiles are: – Application framework – Dalvik virtual machine – Integrated browser – Optimized graphics – SQLite – Media support – GSM Telephony – Bluetooth, EDGE, 3G and Wi-Fi – Camera, GPS, compass – Rich development environment
  16. 16. Android Architecture• The major components of android operating system are: – Applications – Application Framework – Libraries – Android Runtime – Linux Kernel
  17. 17. Architecture
  18. 18. Applications• Android will sail with a set of core applications – E-mail client – SMS program – Calendar – Maps – Browser – Contacts• All these applications are written using Java programming language
  19. 19. Application framework• Open development platform• Ability to build extremely rich and innovative applications• Designed to simplify the reuse of components: – Any application can publish its capabilities and any other application can make use of those applications• The set of services and systems : – Views – Content providers – Resource manager – Notification manager – Activity manager
  20. 20. Libraries• Android includes set of C/C++ libraries• The core libraries are – System C Library – Media Libraries – Surface Manager – Lib Web Core – SGL – 3D Libraries – Free Type – SQLite
  21. 21. Android Runtime• Runs on its own process, with its own instance of the Dalvik virtual machine• Device can run multiple virtual machines efficiently• Executes files in Dalvik Executable(.dex) format• VM is register based and runs classes complied by Java• Dalvik VM relies on Linux kernel for functionality such as threading and low-level memory management
  22. 22. Linux Kernel• Android relies on Linux version 2.6 for systems : – Security – Memory management – Process management – Network stack – Driver model• Kernel acts as abstraction layer between the hardware and the software stack
  23. 23. Description• Android is primarily designed for smart phones and tablets• The open and customizable nature of OS allows it to use on other electronics like – Laptops – Netbooks – Smartbooks – Ebook readers – Smart TV’s(Google TV)
  24. 24. Description Cont.• The OS has seen niche applications on – Wristwatches – Headphones – Car CD – DVD players – Smart Glasses – Refrigerators• Android Green is the color of Android Robot that represents the Android operating systems
  25. 25. Interface• Android’s user interface is based on direct manipulation• Touch inputs that correspond to actions like – Swiping – Tapping – Pinching – Reverse pinching• The response to user input is immediate and provides a fluid touch interface
  26. 26. Interface Cont.• Android devices boot to the home screen• It is made up of app icons and widgets• Home screen is made up off several pages that the user can swipe back and fourth between
  27. 27. Applications• Development in Java language using Android Software Development Kit• They are acquired by end-users through app stores – Google Play – Amazon Appstore• The Play store application allows user to browse, download and update the apps• At June 2012, there were more than 600,000 apps available for android• The operating system itself is installed by 400 million devces
  28. 28. Security and Privacy• Android applications run in a ‘sandbox’• Before installing an application, the Play Store displays all the required permissions• Sandboxing weakens the impact of vulnerabilities and bugs in the applications• There are many anti-virus software Android devices such as – Look-out mobile security – AVG Technologies – McAfee• The smart phones have the ability to report the location of Wi-Fi access points
  29. 29. Android Mobile Phones• Android phones are the top choices for mobile users• The best android mobile phones are: – Samsung Galaxy S III – HTC One X – Motorola Droid Razr Maxx – Google Nexus One – Archos 5 Internet
  30. 30. Samsung Galaxy S3• Is hardware savvy gadget• Android 4.0 Ice Cream Sandwich• Dual core processor• 8MP Camera• S Beam transfers
  31. 31. HTC One X• Features of HTC One X• Big, bright 4.7-inch screen• 4G LTE data speeds• Ice Cream Sandwich• Sense 4
  32. 32. Motorola Droid Razr Maxx• Features – 1.2GHz dual-core processor – 4G LTE data speeds – Super AMOLED Advanced capacitive touch screen, 16M colors
  33. 33. Google Nexus One• Display – 3.70 inches, 480 x 800 pixels, Color, AMOLED Captivities Touchscreen• Processor – 1 GHz processor• Internal/External Memory – 512 MB RAM / 512 MB ROM, microSD/microSDHC• Battery – Li – Ion, 1400 mAh• Standby Time – Up to 290 hours• Talk Time – Up to 7 hours
  34. 34. Archos 5 Internet• Display – 4.8-inch Touchscreen display 800 x 480- pixel resolution• Processor – 800 Mhz• Internal/External Memory – Internal Storage Available in 8 GB and 16GB*• Battery life – 22 hours audio, 7 hours video• Connectivity – 802.11b/g/n wireless, Bluetooth, GPS
  35. 35. Queries??
  36. 36. Thank You!!