Presentation for 24th June 2014 presentation for Android Australia Group meetup. http://www.meetup.com/Android-Australia-User-Group-Sydney/events/186848572/

1. Dissecting Android Wear
24th June 2014
Nanik Tolaram
naniktolaram.com
plus.google.com/+NanikT
nanikjava@yahoo.com

2. Thank You !

3. About
 Customising Full Android stack and
developing apps
 Hardware
ARM – Freescale/Amlogic
X86 – AMD / Intel
Tablet/Media Player form factor
 Hardware / Kernel Tinkerer

4. Questions
 How the whole thing works ?
 Why is it so special ?
 goo.gl/raAhNx (blog post)

5. Which Layer ?

6. Wear Emulator
 KitKat 4.4.x Stack
 Run on ARM architecture
 Socket Communication
(via adb)

7. Android Wear Preview App
• For device communication
• Bridging App to Wear Emulator
• Future – part of Android stack (?)
• Rely on Notification Service
• goo.gl/tCI2kx (Play Store)

8. Notification Flow
Android
App (Gmail,
Phone, SMS)
NotificationListener
(android-wear-preview.apk)
Android Notification System
Bluetooth
Android Wear Device
 Notifications passing and
sorting
 Push and Notify
Mechanism

9. Notification Flow

10. RecipeWear Demo
1
2
3
1 android.support.v4.app.NotificationCompat.NotificationCompat.Builder
(Builder class to build notification message)
android.preview.support.wearable.notifications
(Wear specific notification builder)
2
NotificationManager(Service) call to initiate notification function3
RecipeService.java

11. App Library
 Update SDK to API 19
 extras/android/support/v4/android-support-
v4.jar
 android.preview.support.wearable.notifications
package
 WearableNotifications, RemoteInput and
NotificationsUtil

12. SDK for Wear
 Coming soon ! (speculation around I/O 2014)
 Features
Custom Card Layout
Data & Action between device and wearable
Realtime sensor data display on wearable
App handler for voice action eg: Ok Google,
Take note, Ok Google, Record Conversation,
etc