My talk about CoconutKit 2.0, held at Cocoheads Switzerland in December 2012

1. CoconutKit
Samuel Défago, le studio
Cocoaheads — December 2012

2. Who am I?
• iOS developer at le studio
(www.hortis.ch)
• Mail: defagos (at) gmail (dot) com
• Twitter: @defagos
• Blog: http://subjective-objective-
c.blogspot.com/
• Open-source: https://github.com/defagos

3. What is CoconutKit?
• Open source project
• A library, not a framework
• Collection of useful and robust
components
• Supports ARC and non-ARC projects
• Compatible with iOS 4, 5 and 6

4. Brief history
• July 2010 — Birth
• August 2011 — First public release 1.0
• October 2011 — Softshake event
• November 2012 — Version 2.0

5. My goals
• Eliminate cumbersome tasks
• Provide robust components
• Fill system framework gaps
• Keep components easy to use ...
• ... and documented
• Have fun!

6. Why you should use it?
• Spend more time on your application
• Spend less time on debugging
• Create more robust applications
• Create beautiful applications more easily
• Write better code

7. Links
• Official github page (https://github.com/
defagos/CoconutKit)
• Wiki (https://github.com/defagos/
CoconutKit/wiki)
• Binaries (https://github.com/defagos/
CoconutKit/downloads)

8. Adding to a project
• Easy to integrate (~ 2 minutes)
• Easy to update
• Two methods
• Binaries (.staticframework)
• Cocoapods (https://github.com/
CocoaPods/CocoaPods)

9. Components (1)
• View controller containers & API
• Animations
• Dynamic localization
• Core Data extensions
• Controls (label, cursor, text field, etc.)

10. Components (2)
• Easy view and cell instantiation from nibs
• Lightweight logger
• And more!

11. Containers
• High-quality containers
• Composition (placeholder VC)
• Navigation (stack controller)
• Custom CA transitions
• Storyboard support
• Compatible with UIKit containers

12. Placeholder
• Embed one or several VCs into another
Example 1 Example 2
-setInsetViewController:atIndex:

13. Stack
• Push / pop view controllers
-pushViewController:withTransitionClass:animated:
-popViewController:animated:
-insertViewController:atIndex:withTransitionClass:animated:
-removeViewControllerAtIndex:animated:

14. Stack

15. Autorotation
• Use iOS 6 methods for all
HLSViewController subclasses
• autorotationMode container property
• Available for CoconutKit containers...
• ... and for UIKit ones (no more
subclassing)

16. Why CoconutKit
containers?
• Easily change interface and transitions
• Cleanly separate your code
• Manage complex VC hierarchies easily
• Circumvent UIKit limitations (e.g. modal,
3D flip animations)
• API to create your own containers

17. Animations
• Create in a declarative way
• Combine UIView and CA animations
• Pause and resume, cancel
• Set start time and delay, loop, repeat count
• Play with duration / instantaneously
• Correct behavior when app sent to the
background

18. [self.listAnimation playAnimated:YES];
[self.listAnimation reverseAnimation] playAnimated:YES];

19. Localization
• Change localization at runtime
• nib localization without outlets

20. - (void)localize
{
[super localize];
// View controller localization code
}
[NSBundle setLocalization:@”en”] [NSBundle setLocalization:@”ar”]

21. LS/Country of residence
ULS/Country of residence
LLS/Country of residence
CLS/Country of residence
Strings file
Pays de résidence
PAYS DE RESIDENCE
pays de résidence
Pays De Résidence

22. Core Data extensions
• Managed object context (MOC) stack
• Validation done right
• Text field bindings

23. MOC stack
context-free methods

24. Validation
• Validations written once
• Called separately or globally
• Error-chaining done right

25. Text field bindings
• Bind text field to underlying model object
field
• Optional formatter

26. Label
• Vertical alignment
• Font size adjustment even for nbrLines >= 2

27. Cursor

28. And more!
• Search bar
• Alert view done right
• Slideshows (cross-fade, Ken Burns, ribbon)
• Text field moving to avoid being hidden by
the keyboard

29. And more!

30. Thanks for your
attention!

31. Questions?