The document provides an introduction to the Android operating system and platform. It discusses Android's open source nature and how it allows developers extensive control and integration capabilities. The document also provides background on Android's announcement and release timelines, and outlines the Android Developer Challenge program to encourage developers to build applications for the new platform.

1. An Introduction to Android
Jason Chen
Developer Advocate
Google I/O 2008

2. •Background
•What is Android?
•Latest News

4. 4,000,000,000
3,000,000,000
2,000,000,000
1,000,000,000
0
Internet and Mobile Phone Users, Worldwide
2000 2001 2002 2003 2004 2005 2006 2007
Internet users (PC-based)
Mobile phone users
Source: International Telecommunication Union

6. Mobile Operators

7. Mobile Operators
Handset Manufacturers

8. Mobile Operators
Software
Handset Manufacturers

9. Mobile Operators
Semiconductor
Software
Handset Manufacturers

10. Mobile Operators
Handset Manufacturers
Semiconductor
Software
Commercialization

11. •Background
•What is Android?
•Latest News

12. Linux Kernel
Display
Driver Camera Driver Bluetooth
Driver
Flash Memory
Driver
Binder (IPC)
Driver
USB Driver Keypad Driver WiFi Driver Audio
Power
Drivers
Management

13. Linux Kernel
Display
Driver Camera Driver Bluetooth
Driver
Flash Memory
Driver
Binder (IPC)
Driver
USB Driver Keypad Driver WiFi Driver Audio
Power
Drivers
Management Libraries
FreeType
SGL SSL
SQLite
WebKit
libc
Surface Manager
OpenGL | ES
Media
Framework

14. Android Runtime
Core Libraries
Dalvik Virtual
Machine
Linux Kernel
Display
Driver Camera Driver Bluetooth
Driver
Flash Memory
Driver
Binder (IPC)
Driver
USB Driver Keypad Driver WiFi Driver Audio
Power
Drivers
Management Libraries
FreeType
SGL SSL
SQLite
WebKit
libc
Surface Manager
OpenGL | ES
Media
Framework

15. Android Runtime
Core Libraries
Dalvik Virtual
Machine
Application Framework
View
System
Content
Providers
Resource
Manager Location GTalk Service
Manager
Activity Manager
Package Manager
Window
Manager
Telephony
Manager
Notification
Manager
Linux Kernel
Display
Driver Camera Driver Bluetooth
Driver
Flash Memory
Driver
Binder (IPC)
Driver
USB Driver Keypad Driver WiFi Driver Audio
Power
Drivers
Management Libraries
FreeType
SGL SSL
SQLite
WebKit
libc
Surface Manager
OpenGL | ES
Media
Framework

16. Android Runtime
Core Libraries
Dalvik Virtual
Machine
Application Framework
View
System
Content
Providers
Resource
Manager Location GTalk Service
Manager
Activity Manager
Package Manager
Window
Manager
Telephony
Manager
Notification
Manager
Linux Kernel
Display
Driver Camera Driver Bluetooth
Driver
Flash Memory
Driver
Binder (IPC)
Driver
USB Driver Keypad Driver WiFi Driver Audio
Power
Drivers
Management Libraries
FreeType
SGL SSL
SQLite
WebKit
libc
Surface Manager
OpenGL | ES
Media
Framework
Applications
Home Contacts Phone Browser ...

17. Application Building Blocks
Activity UI component typically corresponding to
one screen.
IntentReceiver Set and respond to notifications or status
changes. Can wake up your app.
Service Faceless task that runs in the background.
ContentProvider Enable applications to share data.

18. Developer Toolchain

19. Emulator
• QEMU-based ARM emulator
runs same system image as
a device
• Use same toolchain to work
with devices or emulator

20. Eclipse Plugin
Project template

21. Debugging
Call stack
Breakpoints, single stepping
Examine variables

22. What does open mean?
Photo by: http://flickr.com/photos/virtualsugar/316200555/

24. Industry

25. Industry
•Software stack open-sourced
under Apache 2.0
license
•Source available after first
handsets ship
•Anyone will be able to
build a system image

26. Industry

27. Industry Users

28. •Users have control of
their experience
•They control what gets
installed
•They choose the defaults
Industry Users

29. Industry Users

30. Developers
Industry Users

31. Developers
•Don’t need permission to
ship an application
•No hidden or privileged
framework APIs
•Can integrate,
extend, and replace
existing components
Industry Users

33. Integrate

34. Integrate

35. Integrate

36. Integrate Extend

37. Integrate Extend

38. Replace

39. Replace

40. Replace

41. Replace

42. Replace

44. What about security?

45. What does this mean
for developers?

46. •Background
•What is Android?
•Latest News

47. Latest News
• 5 Nov 2007: Android announced
• 12 Nov 2007: early look of the SDK released
• 14 Dec 2007: bug-fix SDK released
• 3 Jan 2008: Android Developer Challenge I starts accepting
submissions
• 13 Feb 2008: m5-rc15 SDK released
• 14 Apr 2008: 1788 total submissions for Challenge I
• 12 May 2008: Top 50 Application in Challenge I announced

48. Android Developer Challenge
• Goal: help developers turn great ideas into great code
• Challenge I & II each have a $5MM USD purse
• Challenge II will begin after devices go on sale

49. Q & A