Presentation about porting to Android TV at Google developers summit 구글 디벨로퍼 서밋 2015 에서 안드로이드 TV 포팅 관련해 발표한 자료입니다.

1. Mobile to Android TV
Yooii Studios 김우성

2. Yooii Studios?
From Different to Better.

4. News Kit
Galaxy Falcon

5. News Kit

6. News all over the world.
Automatically.
News curating service supporting
20+ counties’ news providers

8. Options?
Native app Chromecast
VS

9. Chromecast

10. Chromecast
Connectivity & Fast
Everything is gone when out to home screen
Especially fit for streaming service(Video, Audio)

11. Native app
Can be seen in the home screen!
New UX & Design Needed
Need to find a way to sync mobile

12. Leanback vs Mobile

17. Inconvenient

18. Mostly implemented
in the sample app
Leanback Pros
No need to think about new UX.
Just follow them.

19. Issues
Transition Animations
Pair AndroidTV
Project Structure
Architecture

20. Project Structure

21. Single module - mobile

22. Core module

23. Language, Model, Utils etc.

24. Packages
com.yourcompany.app
com.yourcompany.app.tv
→ two-track recommended!

25. Transition Animations

29. BrowseFragment
android.support.v17.leanback.app

32. Architecture
- Asynchronous Process

33. Asynchronous Process
5 newsfeed X 20 images
→ 100 images

34. MainActivity.java
@Override
public void onCreate() {
...
NewsContentFetchManager.fetch(newsFeeds);
}
@Override
public void onFetchNews(News news, int index) {
NewsDb.getInstance().save(news);
NewsFeedAdapter adapter = getAdapter();
adapter.notifyImageUrlLoadedAt(index);
}

35. CardPresenter.java
public class CardPresenter extends Presenter {
...
@Override
public void onBindViewHolder(ViewHolder viewHolder,
Object item) {
News news = (News)item;
NewsViewHolder newsViewHolder =
(NewsViewHolder)viewHolder;
applyNewsInfo(newsViewHolder, news);
applyImage(newsViewHolder, news);
}
...

36. CardPresenter.java
public class CardPresenter extends Presenter {
...
private void applyImage(NewsViewHolder viewHolder,
News news) {
Picasso.with(mContext)
.load(news.getImageUrl())
.resize(CARD_WIDTH,CARD_HEIGHT)
.centerCrop()
.into(viewHolder.picassoTarget);
}
...
}

37. Pair Android TV

40. Yooii
Connector
Mobile
TV
request and wait
type the key
make an unique key
send data

41. Enjoy with Leanback.

42. Galaxy Falcon

44. Troubleshootings
Easy to port, but some

45. Easy to change orientation
android:screenOrientation=“landscape”
Repositioning, Resizing portrait art resources
Touch X → Show every object in a wide screen
Support Landscape

50. Install Error
Sometimes launch fail happened
when ‘adb install apk’ to AndroidTV
→ It might be a problem of Unity version.
It works at v4.5.5

52. Remote Controller
Action changed
Need to focus, move around, click buttons
→ ‘Button sort’ method forTV
→ One finger,Two finger to click

53. Unfocusable Area
Focusable
Collider

54. Hit Detection
public boolean hitDetection(...) {
RaycastHit hitInfo;
Vector3 start = transform.position;
start.z = -3;
Vector3 end = transform.position;
end.z = 3;
if (Physics.Linecast(start, end, out hitInfo)) {
return hitInfo.collider == collider;
}
return false;
}

55. Thank you!
kwosu87@me.com
+Wooseong Kim
#androidtv