Android Wear Development

This presentation covers main concepts of Android Wear development, useful tricks, Wear performance optimisations for battery, main UI elements for Wear and how they are different from common Android UI widgets.
https://youtu.be/rr9srGCVenk

Transcript

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