This document discusses implementing interactive watch faces for Android Wear. It notes that previously watch faces were not interactive, but Google has released an API allowing interactivity through taps and touches. The document provides code samples for setting up touch event handling and references different tap types that can be supported. It concludes that interactive watch faces are easy to implement and should be included in any watch face designs.

1. Interactive watch faces
Hiroshi Hashimoto
2015/9/11
Shibuya.apk #3

2. Hiroshi Hashimoto
Android Developer
Twitter:@hi6484

3. It was updated last month.

4. Interactive watch faces

5. http://android-developers.blogspot.jp/2015/08/interactive-watch-faces-with-latest.html

6. Watch face so far

7. Not Interactive

8. However

9. Only one watch face which is Interactive

11. It was released more than six months ago

12. “ It is very interesting!
But for now, we don’t recommend.
Google wants to separate watch face
from watch-app in their eco-system.”

13. Implement
Interactive watch faces

14. Very easy

15. Gradle
compile 'com.google.android.support:wearable:1.3.0'

16. JAVA CODE
WatchFaceService.Engine.setWatchFaceStyle()
.setAcceptsTapEvents(true)

17. @Override
public void onTapCommand(@TapType int tapType, int x, int y, long eventTime) {
switch (tapType) {
case WatchFaceService.TAP_TYPE_TAP:
super.onTapCommand(tapType, x, y, eventTime);
break;
case WatchFaceService.TAP_TYPE_TOUCH:
super.onTapCommand(tapType, x, y, eventTime);
break;
case WatchFaceService.TAP_TYPE_TOUCH_CANCEL:
super.onTapCommand(tapType, x, y, eventTime);
break;
default:
super.onTapCommand(tapType, x, y, eventTime);
break;
}
}

18. WatchFaceService.TAP_TYPE_TOUCH:

19. WatchFaceService.TAP_TYPE_TAP:

20. WatchFaceService.TAP_TYPE_TOUCH_CANCEL:

21. It is super easy to implement.
You should do it when you make watch-face(s).