Android understanding
Download as PPTX, PDF3 likes4,501 views
The document provides an introduction to Android, detailing its features, architecture, and development environment. Android is described as a software stack for mobile devices based on the Linux kernel, optimized for various applications and hardware configurations. It also mentions the Open Handset Alliance's role in promoting the Android platform, which includes tools and resources for developers to create mobile applications.
Android understanding
- 4. Features
- 6. Linux kernel
- 10. Applications
- 11. Software Development Kit (SDK)Android IntroductionEmbeded SystemWikipedia :An embedded system is a computer system designed to perform one or a few dedicated functionsoften with real-time computing constraints. It is embedded as part of a complete device often including hardware and mechanical parts.Embedded systems are controlled by a main processing core that is typically either a microcontroller or a digital signal processor (DSP).
- 12. Android IntroductionInternet and Mobile Phone Users
- 13. Open Handset AllianceThe OHA is a group of hardware and software developers, including Google, NTT DoCoMo, Sprint Nextel, and HTC …
- 14. Goal
- 15. Accelerate innovation in mobile
- 16. Offer consumers a richer, less expensive, and better mobile experience
- 17. OHA have developed Android™, the first complete, open, and free mobile platformAndroid Introduction
- 18. Android IntroductionGoogle PhoneHTC Dream , T mobile G1, announced at 2008.09HTC Hero, HTC Magic, HTC TatooSAMSUNG Galaxy i7500
- 19. What is Android ?Android is a software stack for mobile devices that includes an operating system, middleware and key applications.Android is a Java-based operating system that runs on the Linux 2.6 kernel.The Android SDK provides the tools and APIs necessary to begin developing applications on the Android platform using the Java programming language.Android Introduction
- 20. FeaturesApplication framework enabling reuse and replacement of components
- 21. Dalvik virtual machine optimized for mobile devices
- 22. Integrated browser based on the open source WebKit engine
- 23. Optimized graphics powered by a custom 2D graphics library; 3D graphics based on the OpenGL ES 1.0 specification (hardware acceleration optional)
- 24. SQLite for structured data storageAndroid Introduction
- 25. Features(con’t)Media support for common audio, video, and still image formats (MPEG4, H.264, MP3, AAC, AMR, JPG, PNG, GIF)
- 26. GSM Telephony (hardware dependent)
- 27. Bluetooth, EDGE, 3G, and WiFi (hardware dependent)
- 28. Camera, GPS, compass, and accelerometer (hardware dependent)
- 29. Rich development environment including a device emulator, tools for debugging, memory and performance profiling, and a plugin for the Eclipse IDEAndroid Introduction
- 31. Android IntroductionLinux KernelAndroid is built on the Linux kernel, but Android is not Linux
- 32. Provide core system services such as process, memory, power management, network stack, driver model and security
- 33. Does not include the full set of standard Linux utilitiesThe Android kernel source is available today http://git.android.com
- 34. Android IntroductionNative LibrariesBionic LibcFunction LibrariesNative ServersHardware Abstraction Libraries
- 35. Android IntroductionBionic LibcC/C++ library
- 36. Custom libc implementation, optimized for embedded use.
- 37. Pros (compare with glibc)
- 38. BSD License
- 39. Small size and fast code paths
- 40. Very fast and small custom pthread implementation
- 41. Not compatible with Gnu Libc (glibc)Android IntroductionFunction LibrariesWebKit
- 42. Based on open source WebKit browser
- 43. Full CSS, Javascript, DOM, AJAX support
- 44. Media Framework
- 45. Based on PacketVideoOpenCORE platform
- 46. Supports standard video, audio, still-frame formats
- 47. SOLite
- 48. Light-weight transactional data store
- 49. Back end for most platform data storageAndroid IntroductionAndroidRuntimeApplication Developed language : JavaDalvik Virtual Machine Instruction set : DalvikExcutableJava Standard LibraryCompile java code to DalvikExecutable (dex format)
- 50. Android IntroductionDalvik Virtual MachineAndroid custom implementation virtual machine
- 51. Provides application portability and runtime consistency
- 52. Runs optimized file format (.dex) and Dalvikbytecode
- 53. Java .class / .jar files converted to .dex at build time
- 54. Designed for embedded environment
- 55. Supports multiple virtual machine processes per device
- 56. Highly CPU-optimized bytecode interpreter
- 57. Efficiently Using runtime memory
- 58. Core Libraries
- 59. Core APIs for Java language provide a powerful, yet simple and familiar development platformAndroid IntroductionApplication FrameworkActivity manager
- 60. Manage the life cycle of applications
- 61. Content Provider
- 62. Share data between applications
- 63. Resource Manager
- 66. Display custom alerts in the status bar
- 67. Views System
- 68. A rich and extensible set, which can construct UIAndroid IntroductionApplicationsUse the powerful and flexible application framework to develop your applicationWritten by JAVA programming language
- 69. Android IntroductionApplication Development EnvironmentIDE – Eclipse Eclipse plug-in - ADTSoftware Development Kit (SDK)Android EmulatorDebbuger
- 70. Android IntroductionSoftware Development KitThe Android SDK includes a variety of custom tools that help you develop mobile applications on the Android platform.
- 71. Android Emulator
- 72. Android Development Tools Plugin (for the Eclipse IDE)
- 73. Android Virtual Devices (AVDs)
- 74. Hierarchy Viewer
- 75. Android Debug Bridge (adb)Android IntroductionAndroidEmulatorVirtual mobile deviceQEMU-based ARM emulatorDesign application in an actual Android runtime environmentUse the same toolchainRun the same binary
- 76. Android IntroductionTHANKYOU - Y. Ramesh Rao