The document provides an introduction to iOS development, outlining the required tools and frameworks for getting started including Xcode, iOS Simulator, and the iOS Developer Library. Key iOS development concepts are explained such as Objective-C, classes and objects, memory management using automatic reference counting, and common design patterns like model-view-controller. Resources for designing user interfaces and submitting apps to the App Store are also highlighted.

1. Introduction to iOS Development
Offline Class Jasakomer (Special iOS), April 15, 2012
Andri Yadi
President, ID-ObjC | CEO, DyCode
@andri_yadi | a (at) dycode (dot) com
http://andriyadi.me

2. about me

3. ID-ObjectiveC
President
The first & largest iOS & OSX
developer community in Indonesia

4. 4 years in a row

5. 2011 - now

6. start a company & code for food
9 years in mobile development

7. a movie freak

8. iOS Devices

10. Start developing iOS apps Today!
21

11. http://developer.apple.com/ios

12. Xcode iOS Simulator iOS Developer Library

13. Required Stuffs

15. Latest iOS SDK

16. Installing Tools
27

17. Optional Stuffs

18. Actual iOS devices

19. For debugging to device & deployment to AppStore

20. Some development stuffs

21. Objective-C
C + OOP ≠ C++

22. A superset of C: Objective-C Advantages:
• Syntactical convention for defining • Dynamic typing:
classes & method enables to determine the class of an object
• Syntax for method invocation at runtime
• Syntax for declaring & synthesizing • Dynamic binding:
properties allows to determine the method to call at
• Static & dynamic typing runtime instead of at compile-time
• Blocks • Dynamic loading:
• Extension: protocol & categories allows to add modules of code & other
resources at runtime.

23. Classes & Objects

24. Methods & Messaging
[aMutableArray insertObject:anObject atIndex:0];
[[self aMutableArray] insertObject:anObject atIndex:0];
[self.aMutableArray insertObject:anObject atIndex:0];

25. Blocks
int result = myBlock(4);

26. Protocols & Categories
Protocol == Interface in other OOP language (Java, C#)
@interface NowPlayingController :
UIViewController<UIScrollViewDelegate, ProfileViewDelegate> {
}
@end
@protocol ProfileViewDelegate
- (void)profileView:(ProfileView *)profileView doSignInWith:
(AuthProviderType)signInType sender:(id)sender;
@optional
- (void)profileView:(ProfileView *)profileView doSignOut:(id)sender;
@end
Category, enables to extend a class without subclassing it
@interface NSDate (Additions)
+ (NSDate *)dateFromTimeString:(NSString*)timeString;
+ (NSDate *)dateWithJSONString:(NSString *)json;
- (NSDate *)dateByAddingDays:(NSInteger)numDays;
- (NSDate *)dateByAddingHours:(NSInteger)numHours;
@end

27. More details:
http://bit.ly/AF8EiJ

28. Design Pattern

29. Model-View-Controller design pattern

30. NowPlayingController
NowPlaying
NowPlayingView
Model-View-Controller design pattern

32. Memory Management
Reference counting
No garbage collector support (yet)
Autorelease Pool

33. iOS frameworks

35. Enable apps to store user documents
and key value data
Push changes to all user’s computers
and devices
Storage

36. Easily integrate Tweet Sheet
Access system-wide Twitter account
from within app
Wrap OAuth request & response

37. Memory management becomes
compiler’s job
No need to deal with retain & release
by yourself
Manually enabled in Xcode
It’s NOT a garbage collector!
Automatic Reference
Counting (ARC)

38. Layout the app’s workflow & design
user interfaces
Specify transitions & segues between
views
Can be loaded dynamically
Storyboard

39. Image processing framework finally
comes to iOS
Provides built-in filters: color effect,
distortions, transitions
Advanced features: red-eye reduction,
face recognition
CoreImage

40. Take advantage of the latest hardware
GLKit: new high-level framework
Apple-developed OpenGL ES extensions

41. Cocoa Touch
Foundation, UIKit, Multi-Touch Gestures

42. Graphics
Core Graphics, Core Animation, Core Image, Core Text, OpenGL ES

43. CoreData
Database, Object-Relational Mapping, optimized for mobile - > 1 million objects store

44. Audio & Video
Media player, Core Audio & OpenAL, iPod library, HTTP Live Streaming

45. Networking
Bonjour, Peer to peer, WebKit framework, BSD socket

46. Core Location & MapKit

47. Multitasking
New kind of multitasking

48. External display support

49. AirPrint
Wireless printing to AirPrint-enabled printers. Hack available

50. Push & Local Notification

51. Game Center
Social gaming platform

52. iAd
Integrated advertising platform

53. In-App Purchase
Payment inside applications

54. Human Interface Design

55. GUI Elements
http://www.teehanlax.com/downloads/iOS_5_GUI_iPhone4S.psd.zip

56. Storyboard

57. The app will look like these

58. App Store Submission

59. Finally, on the App Store

60. you app can use this badge!

61. Everything is here: http://developer.apple.com/ios

62. https://developer.apple.com/library/ios/#referencelibrary/
GettingStarted/RoadMapiOS/Introduction/Introduction.html

63. Let’s see some code

64. DYCODE IS HIRING!

65. If you think you’re
awesome, either mobile
developer guru or still
early learner, send your
awesome CV to:
hrd@dycode.com