mDevcon 2015: See the time on your wrist

For a long time, people were only able to see the time on their (smart)phones”. Apple came with a brilliant invention that allows us to see the time on our wrist! Or perhaps that’s just what the youngest generation will think a few years from now.

Of course the new Apple Watch does allow us to do much more than just see the time. In this session we will see how to use WatchKit, how to integrate it with existing apps, create Glances and Watch specific notifications.

- TN2408 - https://developer.apple.com/library/ios/technotes/tn2408/_index.html
- Devforums confirming Darwin notifications is ok - https://devforums.apple.com/thread/256667?tstart=0
- MMWormHole - https://github.com/mutualmobile/MMWormhole
- Apple Watch Programming Guide

Transcript

1. See#the#&me#on#your#wrist Jeroen&Leenarts
3. Abstract For$a$long$)me,$people$were$only$able$to$see$the$)me$on$their$ (smart)phones”.$Apple$came$with$a$brilliant$inven)on$that$allows$us$ to$see$the$)me$on$our$wrist!$Or$perhaps$that’s$just$what$the$ youngest$genera)on$will$think$a$few$years$from$now. Of#course#the#new#Apple#Watch#does#allow#us#to#do#much#more# than#just#see#the#6me.#In#this#session#we#will#see#how#to#use# WatchKit,#how#to#integrate#it#with#exis6ng#apps,#create#Glances# and#Watch#specific#no6fica6ons.
6. Now$I$do$lots$of$crypto$stuff with%iOS
7. Designer(says: That%is%off%by%one%pixel.
8. CocoaHeads.nl
9. Topics'of'today • The%Apple%Watch • Developer%overview • Share%data%extension%&%containing%app • Q&A
10. The$Apple$Watch
11. 3"days"from"now
12. One$of$the$biggest$surprises$for$ Apple$Watch$will$be$the$breadth$of$ what$it$will$do. —"Tim"Cook1 1"Tuesday"February"10,"2015"1"Goldman"Sachs"Technology"Conference
13. Apps Glances No#fica#ons
15. Design'resources Available(on:(h-ps:/ /developer.apple.com/watchkit/ 9(Photoshop(templates 9(Sketch(templates 9(Fonts 9(Style(guides
16. Developer(overview
17. Developer(overview
18. Developer(overview
19. Developer(overview Apps
20. Apps • Complements+iOS+app • Paired+with+the+user’s+iPhone • One7on7one+rela8on
21. Apps • Supports)two)naviga0on)methods • Hierarchical)(tapping) • Page;based)(swiping)
22. Apps • Supports)two)naviga0on)methods • Hierarchical)(tapping) • Page8based)(swiping)
23. Apps • Supports)two)naviga0on)methods • Hierarchical)(tapping) • Page%based)(swiping)
24. Apps • Taps • Ver)cal,swipes,/,Horizontal,swipes,/,Le6,edge,swipes • Force,Touch • The,Digital,Crown
25. Developer(overview Glances
26. Glances • Browsable+collec-on+of+-mely+and+contextually+relevant+ moments. • Individually,+a+Glance+is+a+quick+view+of+your+app’s+most+ important+content. • Tapping+your+app’s+glance+interface+always+launches+the+app.
27. Glances • Template)based • Not/scrollable • Associated/with/a/single/ac8on • Op8onal
28. Developer(overview No#fica#ons
29. No#fica#ons • Enabled)by)default,)all)no0fica0ons)can) end)up)on)Watch • Types: • Quick)look • Sta0c)/)Dynamic
30. No#fica#ons
31. No#fica#ons • You%can%design%mul0ple%no0fica0ons%by%using%the%no0fica0on% "category" • Think%about%supplying%one%named%"default"
32. No#fica#ons
33. Developer(overview Available(components
34. Available(components
35. Available(components Groups '(Lay(out(items(horizontally(or(ver5cally '(One(or(more(other(interface(elements You$can$nest$these
36. Developer(overview Limita&ons
37. Limita&ons • Avoid'using'technologies'that'request'user'permission • Do'not'use'background'execu:on'modes • Avoid'performing'long<running'tasks • Sharing'data'between'containing'app'and'Watch'extension
38. Limita&ons • Everything,is,done,within,a,Storyboard,file • Communica:on,over,bluetooth • Simulator,simulates,the,latency
39. Share&data&extension&&&containing& app
40. Share&data&extension&&&containing&app Documenta*on+is+very+terse+here+2>+224+words Create&a&shared&app&group .&Use&UserDefaults&for&preferences .&Write&files&to&share&bigger&chunks&of&data Example: objectivec self.sharedDefaults = [[NSUserDefaults alloc] initWithSuiteName:@"group.com.xebia.myapp.mywatch "];
41. Share&data&extension&&&containing&app Enter&technical&note&TN2408 3&File&coordinators&and&shared&containers&is&a&no3no
42. Share&data&extension&&&containing&app Instead(use *(CFPreferences *(writeToFile:atomically:((Atomic(write) *(SQLite *(Core(Data In#no#way#is#your#data#guaranteed#to#be#stored#with#SQLite#and# Core#Data.
43. Share&data&extension&&&containing&app Think&about&wri.ng&data&though 1&SQLite&and&Core&Data&double&entries 1&Atomic&writes,&last&writer&wins Storing(in(the(cloud(works(very(well 4(Be(it(CloudKit(or(a(random(web(address
44. Share&data&extension&&&containing&app What%about openParentApplication:reply: application:handleWatchKitExtensionRequest:reply: ? Well $%Pre(y%slow $%Gets%even%slower%with%more%data $%But%very%useful,%it%wakes%up%the%containing%app
46. Share&data&extension&&&containing&app So#how#to#make#this#easier? How$about$things$like$MMWormhole? 6$This$is$actually$pre;y$decent. 6$Uses$Darwin$no@fica@ons$(Apple$dev$confirms$this$is$ok)
47. Share&data&extension&&&containing&app As#simple#as [self.wormhole passMessageObject:@{@"buttonNumber" : @(1)} identifier:@"button"]; [self.wormhole listenForMessageWithIdentifier:@"button" listener:^(id messageObject) { self.numberLabel.text = [messageObject[@"buttonNumber"] stringValue]; }]; Internally)uses)Darwin)No1fica1ons)and)atomic)writes
48. Q&A
49. Links TN2408'('h*ps:/ /developer.apple.com/library/ios/technotes/ tn2408/_index.html Devforums'confirming'Darwin'noFficaFons'is'ok'('h*ps:/ / developer.apple.com/library/ios/technotes/tn2408/_index.html MMWormHole'('h*ps:/ /github.com/mutualmobile/MMWormhole Apple'Watch'Programming'Guide