iOS 8 IPDC

The talk I gave at the iPhone Developer Conference 2014 in Hamburg about new technologies in iOS 8.
Samplecode:
https://github.com/toco/IPDC-14/
https://github.com/toco/Designables

1. iOS 8 iPhone Developer Conference 2014 Tobias Conradi @toco91
2. Topics • Overview over new technologies • Adaptive UI • Improvements in Interface Builder
3. –developer.apple.com/ios8 „iOS 8 includes over 4,000 new APIs…“
4. App Extensions Action Custom
 Keyboard Document
 Provider Photo
 Editing Sharing Today
5. Today App Extensions
6. App Extensions Touch ID Action
8. HealthKit
9. Many new Frameworks App Extensions Touch ID Apple Pay PhotoKit HealthKit HomeKit CloudKit Handoff Manual Camera Controls Metal SceneKit
10. Adaptive UI
11. Fragmentation of Screen Sizes (in Points) Device Portrait Landscape iPhone 3.5“ 320 x 480 480 x 320 iPad 768 x 1024 1024 x 768 iPhone 4" 320 x 568 568 x 320 iPhone 4.7" 375 x 667 667 x 375 iPhone 5.5" 414 × 736 736 x 414
12. Adaptive UI • Fragmentation of Screen Sizes • Multiple Orientations • In Theory: Support for Unannounced Devices
13. Think of Size Classes instead of Sizes
14. Size Class • Abstract Size of the Interface • Regular • Compact • Unspecified
15. Size Classes Compact Any Regular Compact Any Vertical Regular Horizontal
16. Size Classes Compact Any Regular Compact 3.5", 4", 4.7" iPhone L 5.5“ iPhone L Any Vertical Regular all iPhone P iPad P & L Horizontal P = Portrait, L = Landscape
17. Size Classes Compact Any Regular Compact 3.5", 4", 4.7" iPhone L all iPhone L 5.5“ iPhone L Any 3.5", 4", 4.7" iPhone P & L 5.5“ iPhone P all devices all orientations 5.5“ iPhone L iPad P & L Vertical Regular all iPhone P all iPhone P iPad P & L iPad P & L Horizontal P = Portrait, L = Landscape
18. Demo SizeClasses in IB
19. UITraitCollection Properties: • Horizontal Size Class • Vertical Size Class • Display Scale • Interface Idiom -containsTraitsInCollection: +traitCollectionWithTraitsFromCollections:
20. Contains Traits in Collection? horizontal Compact vertical Regular scale 2.0 idiom Phone horizontal Compact vertical (Unspecified) scale (Unspecified) idiom (Unspecified) +traitCollectionWithHorizontalSizeClass: -containsTraitsInCollection: ✓
21. Contains Traits in Collection? horizontal Compact vertical Regular scale 2.0 idiom Phone horizontal Regular vertical (Unspecified) scale (Unspecified) idiom (Unspecified) +traitCollectionWithHorizontalSizeClass: -containsTraitsInCollection: ❌
22. Combining Trait Collections horizontal Compact vertical (Unspecified) scale (Unspecified) idiom Phone + horizontal Regular vertical Compact scale (Unspecified) idiom (Unspecified) horizontal Regular vertical Compact scale (Unspecified) idiom Phone = +traitCollectionWithTraitsFromCollections: Last Collection Wins
23. Trait Environments UIScreen
24. Trait Environments UIScreen UIWindow
25. Trait Environments UIScreen UIWindow UIViewController
26. Trait Environments UIScreen UIWindow UIViewController UIView
27. Trait Environments UIScreen UIWindow UIViewController UIView
28. Trait Environment • Protocol: -traitCollection -traitCollectionDidChange: • UIScreen • UIView • UIViewController • UIPresentationController
29. Traits and View Controller -willTransitionToTraitCollection:
 withTransitionCoordinator: -setOverrideTraitCollection:
 forChildViewController:
30. UIAppearance +appearanceForTraitCollection: +appearanceForTraitCollection:
 whenContainedIn:
31. Asset Catalog • Any • Any & Compact • Any & Regular • Additionally Device Specific
32. UIImage +imageNamed:
 inBundle:
 compatibleWithTraitCollection:
33. View Controller Changes
35. Showing View Controllers -showViewController:animated: -showDetailViewController:animated: -targetViewControllerForAction:sender: -canPerformAction:withSender: //NO for opt-out • can be implemented by custom containers
36. Demo Presentation Controllers
37. Presenting View Controllers • -presentViewController:animated:completion: • New Styles: • UIModalPresentationOverFullScreen • UIModalPresentationOverCurrentContext • UIModalPresentationPopover
38. Presenting View Controllers New Properties: UIPresentationController *presentationController UIPopoverPresentationController *popoverPresentationController
39. Presentation Controller • Decoupling of Presentation and Animation • Provided by Presented View Controller • Delegates for Adaptivity • You Can Write Your Own Presentation Controllers
40. Demo IBDesignable/IBInspectable
41. Interface Builder • Add custom Attributes for IB • IBInspectable / @IBInspectable • Live preview in IB • IB_DESIGNABLE / @IBDesignable
42. Summary • Exciting new API • Traits and Size Classes • View Controller Changes • Interface Builder
43. @toco91 github.com/toco/IPDC-14/ github.com/toco/Designables