My presentation about Android on Codecamp nov 2012. Small introduction to android and best practices.

1. Made Simple

2. Who am I?
Gabriel Dogaru
– Ex software developer at Synygy
– Ex software engineer at Amazon
– Co-founder TAGonSoft

3. Agenda
● Why Android
● Small Android overview
● Leverage the power of java frameworks with Android

4. What is Android?
“Android is a software stack for mobile devices
that includes an operating system, middleware
and key applications”

5. Why Android?

6. Why Android?
●
● http://www.guardian.co.uk/technology/appsblog/2012/aug/16/android-winning-apps-china-smartphone is Android?
http://www.guardian.co.uk/technology/appsblog/2012/aug/16/android-winning-apps-china-smartphone is Android?

7. Why Android?
●
● http://www.guardian.co.uk/technology/appsblog/2012/aug/16/android-winning-apps-china-smartphone is Android?
http://www.guardian.co.uk/technology/appsblog/2012/aug/16/android-winning-apps-china-smartphone is Android?

8. Why write native Android?

9. Why Native Android?
Indeed job trends 28.10.2012

10. Why Native Android?
Indeed job trends 28.10.2012

11. Why Native Android?
Respect your user

12. Who is Android?

13. Who is Android?

14. Who is Android?

15. Who is Android?

16. Android Architecture

17. Android Architecture

18. Android Kernel

19. Native libraries

20. Android Runtime

21. Application Framework

22. Applications

23. Building Blocks
● Activity
● Intent Receiver
● Service
● ContentProvider

24. Activity
● A single, focused thing that the user can do
● Provides a screen with which users can interact in order
to do something

25. Intent Receiver
●
● Handle the broadcast intents

26. Service
● Can perform long-running operations in the background
and does not provide a user interface
● A component can bind to a service to interact with it

27. Content provider
● Enable applications to share data

28. Intent
● Passive data structure holding an abstract description of
an operation to be performed
● Used to start your activities
● Used to start external applications

29. That's just old stuff from 2008
● http://developer.android.com
● http://www.youtube.com/results?search_query=androidology
● blogs++

30. How about my handy Java frameworks?

31. The Best Programmers Are Lazy and Dumb ?!?!?

32. Android annotations

33. Helps with activities
@NoTitle
@Fullscreen
@EActivity(R.layout.bookmarks)
public class BookmarksToClipboardActivity extends Activity {
@ViewById
ListView bookmarkList;
@ViewById
EditText search;
@AfterViews
void initBookmarkList() {
search.setText(??);//.....
}

34. Helps with events
//.....
@Click( {R.id.button1, R.id.button2})
void updateBookmarksClicked() {
searchAsync(search.getText().toString(),userid);
}
@ItemClick
void bookmarkListItemClicked(Bookmark selectedBookmark) {
clipboardManager.setText(selectedBookmark.getUrl());
}
//.....

35. Helps with preferences
@SharedPref
public interface MyPrefs {
@DefaultString("John")
String name();
@DefaultInt(42)
int age();
long lastUpdated();
}
…...............................
@EActivity
public class MyActivity extends Activity {
@Pref
MyPrefs_ myPrefs;
}

36. Helps with Rest Services
@Rest("http://tagonsoft.ro/")
public interface CodecampClient {
@Get("codecamp.php")
@Accept(MediaType.APPLICATION_JSON)
Codecamp getEventData();
@Post("feedback.php")
void sendFeedback(Feedback feedback);
RestTemplate getRestTemplate();
}

37. Got ORM? OrmLite
@DatabaseTable(tableName = "sessions")
public class Session {
@DatabaseField(id = true, columnName = "_id")
long id;
//....
}
//....
TableUtils.createTable(connectionSource, Session.class);
//....
dbHelper.getSessionDao().create(session);
dbHelper.getSessionDao().queryForId(sessionID);

38. And it all builds up

39. So?
● Android is the world's most popular mobile platform
● Writing Android code can be fun and easy
● developer.android.com is your friend
● You can download example Codecamp app source code from
https://bitbucket.org/gdogaru/codecamp_android

41. Thank You!
gdogaru@gmail.com
gabrieldogaru.com
tagonsoft.ro
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