Android Development

1. Mobile Development

2. Name: Saurabh Software Developer

3. Location

6. It’s yours, its personal, it’s never shared, even with.. It’s always on, until the battery runs out... It’s always with you, until you loose it... It is at the point of consumption, unless you forget it... Providing personalisation, location, attention...

7. Developer ?

8. Platforms ?

9. Who Owns/ maintains it ? Development Language MOBILE PLATFORM Distribution Channel Development Tools

12. OS Architecture

13. Browser Telephony Maps Accelerometer Wifi & Bluetooth 3G/Edge/GPRS Compass Camera Multi Touch Audio Support GPS SQLLite Opengl

14. Activity (Screen) Service (Background) Broadcast Receiver (respond to events) Content Provider (Database/Directory) Data Store(Playlist) Alarm Manager Notification Manager Alarm Manager http://developer.android.com/guide/topics/fundamentals.html

15. Creating a Twitter app

16. http://twitter.com One time Authentication (OAuth) Splash Screen Post Twit Activity I love Android… Post Twitter Feed Settings List Activity Remove Account

17. Twitt TWIT !!!

18. Hello !

19. Button,Textbox, List,Image, … Linear Layout, Relative Layout,Table Layout, …

20. onCreate onStart onResume Foreground LifeCycle Complete LifeCycle Visible LifeCycle onPause onStop onDestroy

21. How to display a list in android?

22. Lifecycle and ANR

23. AsyncTask UI Thread onPreExecute() Activity onCreate() AsyncTask onStart() doInBackground() onResume() onPause() onStop() onPostExecute() onDestroy() UI Thread

24. Relative Layout Profile Name is aligned to the top and right of the image TechNext iPhone and Android event on 11 June, register for free and enjoy the ride… Twit is aligned to the bottom and right of the image

25. Service Activity Activity Service Activity Activity

26. startService(Intent) Activity bindService(Intent, ServiceConnection, …) Service socialService = ISocialService.Stub.asInterface(service); onStart() socialService.getFeed() ISocialService.aidl

27. Working in background?

28. Service void onCreate(){ } //called every startService() void onStartCommand(intent ){ if(intent == xyz){ doxyz(); } } void onDestroy(){ } Intent Activity Action = xyz Data = 123 startService

29. void onCreate(){ } //called every startService() void onStartCommand(intent ){ if(intent == xyz){ doxyz(); } } void onDestroy(){ } bind Activity <<ISocialService>> InstanceofISocialService List<Twit> getSocialFeed(); Interact with api calls

31. Has my application broadcasted some event? Network is Wifior Network is 3G? Keeping yourself Am I on Roaming ? Is my battery dying? Am I low on disk space?

32. Activity registerReceiver(BroadcastReceiver) Intent Data: level-50 BoadcastReceiver 50% onReceive(Intent) Battery Indicator

33. Scheduling actions

34. AlarmManager 5000 milliseconds Pending Intent Repeating Task setRepeating Trigger after 5 seconds

35. “I have always wished that my computer would be as easy to use as my telephone. My wish has come true. I no longer know how to use my telephone.” -BjarneStroustrup

36. Twitter code and all code shown here is available HERE https://code.google.com/p/droidtwit/