Androids Do Daydream
summary
Android 4.2 adds Daydream: a screen‑saver framework where apps extend DreamService, override onDreamingStarted/onDreamingStopped, call setContentView and declare an intent‑filter android.service.dreams.DreamService. Developers get the full UI toolkit, touch (use setInteractive(false) to auto‑dismiss), TimeAnimator for continuous v‑synced animation, and hardware layers with Porter‑Duff compositing for sprites. Daydream runs when docked or charging, won’t start over active wake locks, and includes safety shutoffs for low battery; Flipboard reports ~50% of Daydream sessions lead to an app launch.
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chapters (34)
- 0:00Introduction
- 0:15System UI
- 0:56Daydream
- 1:36Dock Apps
- 5:48Daydream API
- 8:37Step 1 Extend Dream Service
- 9:07Why not just make an activity
- 10:03Features of Daydream
- 12:29Do this instead
- 12:43Free to be experimental
- 13:13Build a simple daydream
- 14:00Jumper class
- 15:15Dream Service
- 16:04Animations
- 17:15More Views
- 18:43Continuous animations
- 22:19Interaction
- 23:33Daydream Settings
- 24:09Daydream Activity
- 25:00Live Wallpaper
- 25:52OpenGL
- 26:26Prevent Daydream
- 26:54Clock
- 27:04Magic Clock
- 27:31Text Clock
- 27:49Blink
- 28:34Google Currents
- 29:36Beautiful Widget
- 31:03Flipboard
- 31:30Wrap Up
- 32:24Thank You
- 33:24Fragments
- 34:19Play Store
- 37:43Battery Charging
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