A WatchKit you can use right now!

1. The Other WatchKit
Alexsander Akers · @a2
NSLondon · 25/09/14

2. Available
early 2015

3. Available
early 2015

5. Apple made
watches cool.

6. Remember this?
xkcd 1420 "Watches" by Randall Munroe.

7. Let’s get ticking!

8. I can haz SDK?
Local
$ brew install pebble-sdk
http://developer.getpebble.com/sdk/
Online
CloudPebble http://cloudpebble.net

9. Project Creation
$ pebble new-project --javascript NSLondon
$ tree NSLondon
.
├── appinfo.json
├── resources
├── src
│ ├── NSLondon.c
│ └── js
│ └── pebble-js-app.js
└── wscript

10. Project Anatomy
NSLondon.c
#include <pebble.h>
static Window *window;

11. Project Anatomy
NSLondon.c
static void init(void) {
window = window_create();
window_stack_push(window, true);
}
static void deinit(void) {
window_destroy(window);
}

12. Project Anatomy
NSLondon.c
int main(void) {
init();
app_event_loop();
deinit();
}

13. Components
• Window ≈ UIViewController
• WindowStack ≈ UINavigationController
• Layer ≈ UIView

14. Components
Window
As we saw before, window_create() and window_destroy()
are used for window creation and destruction.
You get access to the root layer with
window_get_root_layer().

15. Components
WindowStack
Push with window_stack_push().
Pop with window_stack_pop().

16. Components
ActionBarLayer

17. Components
(Rot)BitmapLayer

18. GCompOp

19. Components
ScrollLayer

20. Components
SimpleMenuLayer

21. Components
MenuLayer

22. Components
TextLayer

23. Components
InverterLayer

24. Other UI features
• Vibration
• Backlight
• Click handling
• Animations

25. Graphics
• Circles
• Rects
• Rounded rects
• Paths
• Fills & strokes
• Text drawing/sizing

26. AppMessage
Talk with JS / SDK

27. Timers
Call function after delay

28. Storage
The poor man's NSUserDefaults

29. Event Services
Accelerometer

30. Event Services
App Focus

31. Event Services
Battery

32. Event Services
Bluetooth Connection

33. Event Services
Compass / Magnetometer

34. Event Services
Tick Timer

35. The Other WatchKit
Alexsander Akers · @a2
NSLondon · 25/09/14