CoconutKit is an open source iOS library created by Samuel Défago that provides robust components to eliminate cumbersome tasks in iOS development. It includes view controller containers for navigation and custom transitions, animations, dynamic localization, Core Data extensions, and various controls. The goals of CoconutKit are to spend more time on applications and less time debugging by writing better code through the use of its easy to use and documented components.

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?