KJ-CODE 2014년 2월22일 KJ-CODE 소개 및 자기소개 Obj-C Category Programming

1. Introduce
KJ-CODE
2014.02.22
Ji SangHoon
in KJ-CODE

2. KJ-CODE
2010.06.19
2010.10.16
2013.06.29
•
Start from 2010. 6
•
Start 9 Members
•
Study iOS Develop & IT Trend & IT Skills
•
We Still Study iOS with 15 Members
•
6 Members are iOS Developer
2013.09.07

3. Who Am I
Game Dev
Embeded System Dev
iOS DEV 2010 ~

4. Objective-C
Category Programming
2014.02.22
Ji SangHoon
in KJ-Code

5. Inherit
•
Vertical Inherit
•
Make new class
•
Can add new variable
•
Can access variable (expect @private)
•
Can add new method
•
Can use override method

6. Category
•
Horizon Inherit
•
Use original class
•
Can not add new variable (except static variable)
•
Can access variable (also @private)
•
Can add new method
•
Can not use override method

7. Inherit vs Category
Inherit
Category
○
×
Add New Variable
○
△
(static variable)
Access Variable
△
(expect @private)
○
Add New Method
○
○
Override Method
○
×
Make New Class

8. Syntax
Inherit
@interface <Class Name> : UIViewController
@interface OverlayViewController : UIViewController
@interface MyTableViewController : UITableViewController
Category
@interface UIViewController (<Category Name>)
@interface UIViewController (OverlayView)

9. How To Make
New File… -> Objective-C Category
File Name
Input Category Name &
Select Category On Class
<Inherit Class Name> + <Category Name>.h / m

10. DEMO

11. Categories in Demo
UIViewController+OverlayView
UIColor+DefineColor
UIImage+blur
UIView+ScreenShot
UILabel+AutoSize
NSUserDefault+Addition
You can download Sample Source Code in Github
All KJ-CODE Sample Source
https://github.com/dunkeyike/KJ-Code_ALL
Category Sample Source
https://github.com/dunkeyike/KJ-Code_ALL/tree/master/20140215_category

12. See Also..
Apple Developer Center - Customizing Existing Classes
https://developer.apple.com/library/ios/documentation/Cocoa/Conceptual/
ProgrammingWithObjectiveC/CustomizingExistingClasses/
CustomizingExistingClasses.html#//apple_ref/doc/uid/TP40011210-CH6-SW1
Objective-C：カテゴリで「できること」と「できないこと」
http://blog.livedoor.jp/kurokawh/archives/2469395.html
Objective-Cの既存のクラスを拡張する仕組み
http://labs.torques.jp/2011/01/14/1596/