1.
Focus on tvOS
October 13th, 2015
Séraphin Hochart - @nsphin

2.
Where do we start?
📺

3.
Instagram & Apple Watch
• Computers are made to be used for hours
• Phones are made to be used for minutes
• Watches are made to be used for seconds

4.
Instagram & Apple Watch
• Computers are made to be used for hours
• Tvs are made to be used for a few hours, but
browsing should be minutes
• Phones are made to be used for minutes
• Watches are made to be used for seconds

5.
2 ways of building
• TVML
• tvOS

6.
Example : Gammes for iOS

7.
Things that su..
to keep in mind
💩

8.
Xcode

9.
Few things
• No microphone access
• Bitcode only
• Universal apps. 1 price.
• Fixed screen size… for now

10.
Local storage
• NSUserDefaults : 500kb of data max.
• What about filesystem? CoreData?
• 200Mb limit per app // TODO : to confirm

11.
Meh
“There is no persistent local storage
for apps on Apple TV. This means that
every app developed for the new
Apple TV must be able to store data
in iCloud and retrieve it in a way that
provides a great customer experience”
…
“Yes, all local storage can be purged
before the next time a user opens the
app.”
- Some Apple guy on developer
forums

12.
Focus in a “cursorless” world
✏

13.
🚫 Mistake #1 :
You are not on a touch screen

14.
🚫 Mistake #2:
Diagonal navigation

15.
🚫 Mistake #3:
Don’t put your inputs too
close to each other

16.
Space your inputs

17.
What should we do?
1. Netflix, Airbnb : 1 way navigation.
2. Space your inputs
3. Build a UI for easy focus
4. If all else fails…

18.
Last resort : code
1. override func didUpdateFocusInContext(context:
UIFocusUpdateContext, withAnimationCoordinator coordinator:
UIFocusAnimationCoordinator) {
2. preferredFocusedView / nextFocusedView
3. Create UIFocusGuide()

19.
// TODO : Attempt to do a
live demo

20.
Thanks!
phin@breather.com
@nsphin