iPhone Development Introduction Talk given at Braga Geek Nights December 2010

1. iPhone Development Intro
www.braceta.com
Luis Azevedo www.twitter.com/braceta

2. Overview
• Tools/SDK
• Setting up
• Objective-C
• Demo?

3. Setting up...

4. Setting up...
• Get a Mac

5. Setting up...
• Get a Mac
• Get the SDK

6. Setting up...
• Get a Mac
• Get the SDK
• Install

7. Setting up...
• Get a Mac
• Get the SDK
• Install
• Get an Apple Developer Connection
account

8. Setting up...
• Get a Mac
• Get the SDK
• Install
• Get an Apple Developer Connection
account

9. Setting up...
• Get a Mac
• Get the SDK
• Install
• Get an Apple Developer Connection €€€
account

10. Setting up...
• Get a Mac
• Get the SDK
• Install
• Get an Apple Developer Connection €€€
account
• Code

11. Setting up...
• Get a Mac
• Get the SDK
• Install
• Get an Apple Developer Connection €€€
account
• Code
• Profit?

12. Tools/SDK
• Xcode
• iPhone/iPod or iPad
• Interface Builder
• iPhone Simulator
• Instruments

13. Xcode

14. Simulator

15. Interface Builder

16. Instruments

17. Languages
•C
• C++
• Objective-C
• Objective-C++

18. Objective-C
History

19. C Smalltalk

20. C Smalltalk
Objective-C

21. C Smalltalk
Objective-C
C++

22. C Smalltalk
Objective-C
C++
Java C#

23. C Smalltalk
Objective-C
C++
Java C#

24. C Smalltalk
Objective-C
C++
Java C#

25. Objective-C
Description

26. Objective-C

27. Objective-C
• OOP

28. Objective-C
• OOP
• Dynamic

29. Objective-C
• OOP
• Dynamic
• based on message passing

30. Objective-C
• OOP
• Dynamic
• based on message passing
• single inherance

31. Objective-C
• OOP
• Dynamic
• based on message passing
• single inherance
• Protocols and Categories

32. Objective-C
• OOP
• Dynamic
• based on message passing
• single inherance
• Protocols and Categories
• full of [] and @s

33. Files
• .h - Header files
• .m - Class implementation files

34. Objective-C
Sintax

35. Syntax Examples

36. Syntax Examples
[object method];

37. Syntax Examples
[object method];
int value = [object method];

38. Syntax Examples
[object method];
int value = [object method];
[object method:argument];

39. Syntax Examples
[object method];
int value = [object method];
[object method:argument];
[[object method] method2];

40. Syntax Examples
[object method];
int value = [object method];
[object method:argument];
[[object method] method2];
[object method:argument option:anotherArg];

41. .m file
- (id) thisIsAMethod:(int)param1
options:(float)param2

42. .m file
- (id) thisIsAMethod:(int)param1
options:(float)param2
{
for (int n = 0; n < 10; ++n)
{
NSLog(@”N=%d”, n);
[object callMethod:1 thing:2];
}
}

43. .m file
@implementation MyClass
- (id) thisIsAMethod:(int)param1
options:(float)param2
{
for (int n = 0; n < 10; ++n)
{
NSLog(@”N=%d”, n);
[object callMethod:1 thing:2];
}
}
@end

44. .m file
@implementation MyClass
- (id) thisIsAMethod:(int)param1
@class options:(float)param2
@interface
{
@end
for (int n = 0; n < 10; ++n)
{ @property
NSLog(@”N=%d”, n);
@private
[object callMethod:1 thing:2];
} @protected
}
@end

45. .m file
@implementation MyClass
- (id) thisIsAMethod:(int)param1
options:(float)param2
{
for (int n = 0; n < 10; ++n)
{
NSLog(@”N=%d”, n);
[object callMethod:1 thing:2];
}
}
@end

46. .m file
@implementation MyClass
- (id) thisIsAMethod:(int)param1
options:(float)param2
{
for (int n = 0; n < 10; ++n)
{
NSLog(@”N=%d”, n);
[object callMethod:1 thing:2];
}
}
@end

47. .m file
@implementation MyClass
- (id) thisIsAMethod:(int)param1
options:(float)param2
{
for (int n = 0; n < 10; ++n)
{
NSLog(@”N=%d”, n);
[object callMethod:1 thing:2];
}
}
@end

48. .m file
@implementation MyClass
- (id) thisIsAMethod:(int)param1
options:(float)param2
{
for (int n = 0; n < 10; ++n)
{
NSString
NSLog(@”N=%d”, n);
[object callMethod:1 thing:2];
}
}
@end

49. .h file
#import <Foundation/Foundation.h>
@interface MyClass : NSObject
{
NSDictionary *member;
bool otherMember;
}
- (void) init;
- (id) initWithItems:(NSArray*)array
enabled:(bool)enabled;
+ (id) myClassWithItems:(NSArray*)array;
@end

50. .h file
#import <Foundation/Foundation.h>
@interface MyClass : NSObject
{
NSDictionary *member;
bool otherMember;
}
- (void) init;
- (id) initWithItems:(NSArray*)array
enabled:(bool)enabled;
+ (id) myClassWithItems:(NSArray*)array;
@end

51. .h file
#import <Foundation/Foundation.h>
@interface MyClass : NSObject
{
NSDictionary *member;
bool otherMember;
}
- (void) init;
- (id) initWithItems:(NSArray*)array
enabled:(bool)enabled;
+ (id) myClassWithItems:(NSArray*)array;
@end

52. .h file
#import <Foundation/Foundation.h>
@interface MyClass : NSObject
{
NSDictionary *member;
bool otherMember;
}
- (void) init;
- (id) initWithItems:(NSArray*)array
enabled:(bool)enabled;
+ (id) myClassWithItems:(NSArray*)array;
@end

53. .h file
#import <Foundation/Foundation.h>
@interface MyClass : NSObject
{
NSDictionary *member;
bool otherMember;
}
- (void) init;
- (id) initWithItems:(NSArray*)array
enabled:(bool)enabled;
+ (id) myClassWithItems:(NSArray*)array;
@end

54. Syntax Examples
// Create MyClass instance
MyClass *myClass = [[MyClass alloc] init];

55. Properties
@interface MyClass
{
int harold;
}
@property (nonatomic,retain) int age;
@end
// In MyClass.m...
@interface MyClass
@synthesize age;
@end

56. Properties
[myClass setAge:20];
myClass.age = 20; // is calling setAge

57. Categories
@interface NSObject (Foo)
- (void) extraFooMethod;
@end

58. Categories
@interface NSObject (Foo)
- (void) extraFooMethod;
@end
NSArray *array = [NSArray array];
[array extraFooMethod];

59. iOS Development

60. iOS Frameworks

61. iOS Frameworks
Cocoa Touch

62. iOS Frameworks
UIKit, MapKit, Printing,
Cocoa Touch Gesture Recognizers

63. iOS Frameworks
UIKit, MapKit, Printing,
Cocoa Touch Gesture Recognizers
Media

64. iOS Frameworks
UIKit, MapKit, Printing,
Cocoa Touch Gesture Recognizers
Core Audio, Open GL ES,
Media Quartz, Core Animation

65. iOS Frameworks
UIKit, MapKit, Printing,
Cocoa Touch Gesture Recognizers
Core Audio, Open GL ES,
Media Quartz, Core Animation
Core Services

66. iOS Frameworks
UIKit, MapKit, Printing,
Cocoa Touch Gesture Recognizers
Core Audio, Open GL ES,
Media Quartz, Core Animation
Core Data, Core
Core Services Foundation, Address Book
Framework

67. iOS Frameworks
UIKit, MapKit, Printing,
Cocoa Touch Gesture Recognizers
Core Audio, Open GL ES,
Media Quartz, Core Animation
Core Data, Core
Core Services Foundation, Address Book
Framework
Core OS

68. iOS Frameworks
UIKit, MapKit, Printing,
Cocoa Touch Gesture Recognizers
Core Audio, Open GL ES,
Media Quartz, Core Animation
Core Data, Core
Core Services Foundation, Address Book
Framework
Core OS Posix Threads, SQLite

69. iOS Frameworks
UIKit, MapKit, Printing,
Objective C Cocoa Touch Gesture Recognizers
Core Audio, Open GL ES,
Media Quartz, Core Animation
Core Data, Core
Core Services Foundation, Address Book
Framework
C Core OS Posix Threads, SQLite

70. UIKit

71. UIKit

72. MVC Pattern

73. MVC Pattern
Model

74. MVC Pattern
View
Model

75. MVC Pattern
View
Model Controller

76. MVC Pattern
View
Model Controller

77. MVC Pattern
View
Model Controller

78. Views

79. Views
• UIView class

80. Views
• UIView class
• View Object is a rectangle on the screen

81. Views
• UIView class
• View Object is a rectangle on the screen
• Handles touch events

82. Views
• UIView class
• View Object is a rectangle on the screen
• Handles touch events
• Can be container for other views

83. Views
• UIView class
• View Object is a rectangle on the screen
• Handles touch events
• Can be container for other views
• Can be created programatically or with
Interface Builder

84. Views
• UIView class
• View Object is a rectangle on the screen
• Handles touch events
• Can be container for other views
• Can be created programatically or with
Interface Builder
• Can be animated using Core Animations

85. Views

86. ViewControllers

87. ViewControllers
• iOS Controllers are ViewControllers

88. ViewControllers
• iOS Controllers are ViewControllers
• Descendant of UIViewController

89. ViewControllers
• iOS Controllers are ViewControllers
• Descendant of UIViewController
• Provides all the logic to bridge data from
the model and the view

90. ViewControllers
• iOS Controllers are ViewControllers
• Descendant of UIViewController
• Provides all the logic to bridge data from
the model and the view
• Loads Views

91. ViewControllers
• iOS Controllers are ViewControllers
• Descendant of UIViewController
• Provides all the logic to bridge data from
the model and the view
• Loads Views
• Implements the code to handle actions
triggered by touch events on views

92. ViewController

93. .XIB Files

94. .XIB Files
• Interface Builder XML GUI spec files

95. .XIB Files
• Interface Builder XML GUI spec files
• Connects from IB to the Code

96. .XIB Files
• Interface Builder XML GUI spec files
• Connects from IB to the Code
• Only on iOS. At build time are converted
to NIB files

97. Demo

98. Resources
Beggining iPhone 3 Development
Dave Mark | Jeff LaMarche
http://iphonedevelopment.blogspot.com/

99. Resources
Facebook Three20 Obj-C
Framework
https://github.com/facebook/three20

100. Q&A