Lviv MD Day 2015 Сергій Козирєв "Android Wear Development"

1. Android Wear
Development
Lohika
Sergii Kozyrev

2. Intro
• Wear development environment
• Notifications
• Wear Apps
• Watchfaces
• Demo

3. Environment
• Enable developer mode
• Wear app goes inside apk for release (wear task)
• for debug - separate
• same version code, same permissions

4. Notifications
• Ready for use - standard notifications
• NotificationManagerCompat
• WearableExteneder for wear specific options

5. Apps
• Same well known Android
• Components should live as little as possible
• 5 sec inactivity, but not in onPause (due to
incoming notification)
• Always keep in mind how small battery is

6. Communication
• Data items: key-value, synchronised, guaranteed
• Messages: byte array, no delivery guaranteed, fast

7. UI
• GridViewPager and WearableListView
• BoxInsetView (layout_box) and WatchViewStub

8. Ambiactive support
• wake-lock - BAD, Always on - GOOD
(WearableActivity - setAmbientEnabled())
• EXTRA_BURN_IN_PROTECTION and
EXTRA_LOWBIT_AMBIENT from
onEnterAmbient(Bundle) bundle in
WearableActivity

9. WatchFaces
• Interactive (Full colors)
• Ambiactive (disable background, avoid solid
regions, 95% should be black)
• out of box screen burning protection
• Maintain timer in interactive mode and use auto-tick
once per minute in ambient
• draw it straight on canvas :)

10. Links
• https://www.udacity.com/course/android-wear-
development--ud875A
• https://developer.android.com/wear/index.html
• https://github.com/kozyrevsergey89/dangerhelper
• https://www.facebook.com/sergii.kozyrev
• kozyrevsergey89@gmail.com