Android is a software stack based on Linux that uses Java as its programming interface. It is open source and developed by the Open Handset Alliance led by Google. Android is the market leader in smartphones, with over 550,000 new activations per day. Android applications are developed in Java using the Android SDK and run on the Dalvik virtual machine. The Android API provides capabilities like rich UI components, background processing, network access, hardware access, and more. Developers can test apps using the emulator or deploy to devices over USB or app markets. Main Android programming constructs include activities, views, intents, services, and content providers.

1. Android IntroductionLars VogelTwitter: @vogellaGoogle+: http://gplus.to/vogella

2. What is Android?- Software stack based on Linux with a Java programming interface.- Open Source - Developed officially by the Open Handset Alliance lead by Google

4. Android is market-leader in the Smartphone segmentMore then 550 000 new phone activations per day (from 14 Juli 2011)

5. On Android you develop in JavaReally?

6. Android ProgrammingApplication runs on the Dalvik virtual machine Tool dx converts Java Bytecode into Dalvik Executable Code (.dex)You use the Java programming language but Android does not run Java Bytecode

7. Overview of the API CapabilitiesRich UI componentsThreads and Background ProcessingFull network stack (Http, JSON)Database and File System accessAccess to the hardware (GPS, Camera, Phone)and much more............

8. Developer Toolchain

9. Android Development Tools (ADT) for EclipseEclipse based toolingWindowsLinux (i386)Mac OS (Intel)

10. EmulatorQEMU-based ARM emulator runs same image as a deviceUse same toolchain to work with device or emulatorInital startup is slooooowwwwww.....

11. Android programming constructs

12. Main Android programming constructsActivityViewsIntentsBroadcast ReceiverServicesContentProvider

13. ActivityAn activity is a single, focused thing that the user can do.Extends “android.app.Activity”Layout of Activity defines UI elements and their arrangements

14. I had only the best intents....

15. In Android there is no such thing as a monolistic application, everything is a connection of components.

16. Intentsnew Intent(Intent.ACTION_VIEW, Uri.parse("http://www.vogella.de"));new Intent(Intent.ACTION_CALL, Uri.parse("tel:(+49)12345789"));New Intent(this, MyClass.class);

17. Deployment Also known as: I really hope that Steve likes my app....

18. DeploymentUSB CableMarket (Google, Amazon)Direct

19. There is more....

20. I can talk and hearInternet (java.net, Apache HttpClient, JSON...)BluetoothEmailSMSVoIP (SIP (Session Initiation Protocol))

21. I have feelingsCamera APIMotion DetectionLocation API (GIS)Heat SensorAccelerator

22. Other CapabilitiesGood security systemPush to deviceStorage: File System / Preferences SQLiteDatabaseInteractive Widgets on the homescreenLive Wallpapers (as background)Animations and StylingSimple List handling(Multi-) TouchNFSCanvas / OpenGL ES (Game programming....)

23. Performance?

24. Be fast!Avoid ApplicationNotResponding ErrorThreads not allowed to modify the UI directlyUse handler or AsyncTask to update the UI after Thread is done

25. SummaryAndroid powerful and well-designed development platformMarketleader for SmartphonesPower to the developer

26. Android: Where to go from here:Google for „Android Development Tutorials“Android Training: http://www.vogella.de/training/android.html

28. Thank youFor further questions:Lars.Vogel@gmail.comhttp://www.vogella.deTwitter http://www.twitter.com/vogellaGoogle+ http://gplus.to/vogella

29. Picture Credit All pictures are from http://www.sxc.hu/ to get them add the number to http://www.sxc.hu/photo/Agenda 1089869Dalvik 1269657Software Layer / Tomatos 832159616474Thinking guy 324541Smiling Boy 812138Toolchain 1197009Stopwatch http://www.sxc.hu/photo/634598Timer / Watches 1062014Next guy 986700Sad Lady 232738Funny guy 1173019Waiter / Services http://www.sxc.hu/photo/157966Security 695054There is more 702367Performance rabbits 786444

30. Performance snail 1181451

31. Performance Running man 377100

32. Hang-man 620961

33. Summary http://www.sxc.hu/photo/1184807

34. Question http://www.sxc.hu/photo/418215

35. Reading material http://www.sxc.hu/photo/406547

36. Thank you http://www.sxc.hu/photo/986313License & AcknowledgementsThis work is licensed under the Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 Germany LicenseSee http://creativecommons.org/licenses/by-nc-nd/3.0/de/deed.en_US