Objective-C Crash Course for Web Developers
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These are the slides of my SXSW 2010 Objective-C Crash Course for Web Developers. The code samples (and the keynote document) can also be downloaded from http://workshop.verbogt.nl/
![Syntax
MacBookPro *myNewMac = [MacBookPro new];](https://image.slidesharecdn.com/objective-ccrashcourse-100319131414-phpapp02/85/Objective-C-Crash-Course-for-Web-Developers-62-320.jpg)
![Syntax
MacBookPro *myNewMac = [MacBookPro new];
var myNewMac = new MacBookPro();](https://image.slidesharecdn.com/objective-ccrashcourse-100319131414-phpapp02/85/Objective-C-Crash-Course-for-Web-Developers-63-320.jpg)
![Syntax
if (moneyInTheBank > [myNewMac price]) {
// Go buy one!
}](https://image.slidesharecdn.com/objective-ccrashcourse-100319131414-phpapp02/85/Objective-C-Crash-Course-for-Web-Developers-65-320.jpg)
![Syntax
if (moneyInTheBank > [myNewMac price]) {
// Go buy one!
}
if (moneyInTheBank > myNewMac.getPrice()) {
// Go buy one!
}](https://image.slidesharecdn.com/objective-ccrashcourse-100319131414-phpapp02/85/Objective-C-Crash-Course-for-Web-Developers-66-320.jpg)
![Messaging
NSString *name = [person name];](https://image.slidesharecdn.com/objective-ccrashcourse-100319131414-phpapp02/85/Objective-C-Crash-Course-for-Web-Developers-71-320.jpg)
![Messaging
NSString *name = [person name];
var name = person.getName();](https://image.slidesharecdn.com/objective-ccrashcourse-100319131414-phpapp02/85/Objective-C-Crash-Course-for-Web-Developers-72-320.jpg)
![Messaging
[person setName:@”John”];](https://image.slidesharecdn.com/objective-ccrashcourse-100319131414-phpapp02/85/Objective-C-Crash-Course-for-Web-Developers-74-320.jpg)
![Messaging
[person setName:@”John”];
person.setName(”John”);](https://image.slidesharecdn.com/objective-ccrashcourse-100319131414-phpapp02/85/Objective-C-Crash-Course-for-Web-Developers-75-320.jpg)
![Messaging
NSUInteger length = [[person name] length];](https://image.slidesharecdn.com/objective-ccrashcourse-100319131414-phpapp02/85/Objective-C-Crash-Course-for-Web-Developers-77-320.jpg)
![Messaging
NSUInteger length = [[person name] length];
var length = person.getName().getLength();](https://image.slidesharecdn.com/objective-ccrashcourse-100319131414-phpapp02/85/Objective-C-Crash-Course-for-Web-Developers-78-320.jpg)
![Messaging
[person setName:name andAge:21];](https://image.slidesharecdn.com/objective-ccrashcourse-100319131414-phpapp02/85/Objective-C-Crash-Course-for-Web-Developers-80-320.jpg)
![Messaging
[person setName:name andAge:21];
person.set({name:name, age:21});](https://image.slidesharecdn.com/objective-ccrashcourse-100319131414-phpapp02/85/Objective-C-Crash-Course-for-Web-Developers-81-320.jpg)
![Creating Instances
Person *person = [[Person alloc] init];](https://image.slidesharecdn.com/objective-ccrashcourse-100319131414-phpapp02/85/Objective-C-Crash-Course-for-Web-Developers-84-320.jpg)
![Creating Instances
Person *person = [[Person alloc] init];
Person *person = [Person new];](https://image.slidesharecdn.com/objective-ccrashcourse-100319131414-phpapp02/85/Objective-C-Crash-Course-for-Web-Developers-85-320.jpg)
![Creating Instances
Person *person = [[Person alloc] init];
Person *person = [Person new];
Person *person = [Person person];](https://image.slidesharecdn.com/objective-ccrashcourse-100319131414-phpapp02/85/Objective-C-Crash-Course-for-Web-Developers-86-320.jpg)
![Memory Management
NSObject *keepMe = [[NSObject alloc] init];](https://image.slidesharecdn.com/objective-ccrashcourse-100319131414-phpapp02/85/Objective-C-Crash-Course-for-Web-Developers-91-320.jpg)
![Memory Management
NSObject *keepMe = [[NSObject alloc] init];
[keepMe retain];](https://image.slidesharecdn.com/objective-ccrashcourse-100319131414-phpapp02/85/Objective-C-Crash-Course-for-Web-Developers-92-320.jpg)
![Memory Management
NSObject *keepMe = [[NSObject alloc] init];
[keepMe retain];
[keepMe autorelease];](https://image.slidesharecdn.com/objective-ccrashcourse-100319131414-phpapp02/85/Objective-C-Crash-Course-for-Web-Developers-93-320.jpg)
![Memory Management
NSObject *keepMe = [[NSObject alloc] init];
[keepMe retain];
[keepMe autorelease];
[keepMe release];](https://image.slidesharecdn.com/objective-ccrashcourse-100319131414-phpapp02/85/Objective-C-Crash-Course-for-Web-Developers-94-320.jpg)
![Memory Management
NSObject *keepMe = [[NSObject alloc] init];
[keepMe retain];
[keepMe autorelease];
[keepMe release];
NSObject *keepMe = [NSObject object];](https://image.slidesharecdn.com/objective-ccrashcourse-100319131414-phpapp02/85/Objective-C-Crash-Course-for-Web-Developers-95-320.jpg)
![Categories
Extending classes without subclassing
NSString *json = @”{“test”:”OK”}”;
SBJsonParser *parser =
[[SBJsonParser] alloc] init];
NSDictionary *data =
[parser objectWithString:json];](https://image.slidesharecdn.com/objective-ccrashcourse-100319131414-phpapp02/85/Objective-C-Crash-Course-for-Web-Developers-100-320.jpg)
![Categories
Extending classes without subclassing
NSString *json = @”{“test”:”OK”}”;
NSDictionary *data = [json JSONValue];](https://image.slidesharecdn.com/objective-ccrashcourse-100319131414-phpapp02/85/Objective-C-Crash-Course-for-Web-Developers-101-320.jpg)
![NSString
NSString *myName = @”joris”;
NSString *welcome = [NSString stringWithFormat:@”Hello %@”, name];](https://image.slidesharecdn.com/objective-ccrashcourse-100319131414-phpapp02/85/Objective-C-Crash-Course-for-Web-Developers-109-320.jpg)
![NSString
NSString *myName = @”joris”;
NSString *welcome = [NSString stringWithFormat:@”Hello %@”, name];
NSString *greeting = @”Hello ”;
NSString *welcome = [greeting stringByAppendingString:name];](https://image.slidesharecdn.com/objective-ccrashcourse-100319131414-phpapp02/85/Objective-C-Crash-Course-for-Web-Developers-110-320.jpg)
![NSString
NSString *myName = @”joris”;
NSString *welcome = [NSString stringWithFormat:@”Hello %@”, name];
NSString *greeting = @”Hello ”;
NSString *welcome = [greeting stringByAppendingString:name];
if ([myName isEqualToString:otherName]) {
// Strings are equal!
}](https://image.slidesharecdn.com/objective-ccrashcourse-100319131414-phpapp02/85/Objective-C-Crash-Course-for-Web-Developers-111-320.jpg)
![NSArray
NSArray *myArray = [NSArray arrayWithObjects:@”me”, @”you”, nil];](https://image.slidesharecdn.com/objective-ccrashcourse-100319131414-phpapp02/85/Objective-C-Crash-Course-for-Web-Developers-114-320.jpg)
![NSArray
NSArray *myArray = [NSArray arrayWithObjects:@”me”, @”you”, nil];
NSUInteger count = [myArray count];](https://image.slidesharecdn.com/objective-ccrashcourse-100319131414-phpapp02/85/Objective-C-Crash-Course-for-Web-Developers-115-320.jpg)
![NSArray
NSArray *myArray = [NSArray arrayWithObjects:@”me”, @”you”, nil];
NSUInteger count = [myArray count];
NSString *secondItem = [myArray objectAtIndex:1];](https://image.slidesharecdn.com/objective-ccrashcourse-100319131414-phpapp02/85/Objective-C-Crash-Course-for-Web-Developers-116-320.jpg)
![NSArray
NSArray *myArray = [NSArray arrayWithObjects:@”me”, @”you”, nil];
NSUInteger count = [myArray count];
NSString *secondItem = [myArray objectAtIndex:1];
for (NSString *name in myArray) {
NSLog(@”Name: %@”, name);
}](https://image.slidesharecdn.com/objective-ccrashcourse-100319131414-phpapp02/85/Objective-C-Crash-Course-for-Web-Developers-117-320.jpg)
![NSDictionary
NSDictionary *myDict = [NSDictionary dictionaryWithObjectsAndKeys:
@”joris”, @”firstname”,
@”verbogt”, @”lastname”,
nil];](https://image.slidesharecdn.com/objective-ccrashcourse-100319131414-phpapp02/85/Objective-C-Crash-Course-for-Web-Developers-120-320.jpg)
![NSDictionary
NSDictionary *myDict = [NSDictionary dictionaryWithObjectsAndKeys:
@”joris”, @”firstname”,
@”verbogt”, @”lastname”,
nil];
NSString *lastname = [myDict objectForKey:@”lastname”];](https://image.slidesharecdn.com/objective-ccrashcourse-100319131414-phpapp02/85/Objective-C-Crash-Course-for-Web-Developers-121-320.jpg)
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Objective-C Crash Course for Web Developers
- 1. Objective-C Crash Course for Web Developers
- 2. About me
- 3. About me LinkedIn: jverbogt Twitter: silentjohnny Facebook: silentjohnny E-mail: [email protected]
- 4. History
- 12. iPhone SDK
- 13. AppStore
- 17. Build your own
- 18. TXXI
- 21. Today’s Topics
- 22. Today’s Topics
- 23. Today’s Topics Native iPhone Development
- 24. Today’s Topics Native iPhone Development Live Demo
- 25. Today’s Topics Native iPhone Development Live Demo Questions
- 27. iPhone Development Tools: Xcode / Interface Builder
- 28. iPhone Development Tools: Xcode / Interface Builder Language: Objective-C
- 29. iPhone Development Tools: Xcode / Interface Builder Language: Objective-C Frameworks: Foundation / UIKit
- 30. Xcode
- 31. Xcode Editor
- 37. Interface Builder Design UI Bind to code
- 38. Interface Builder Design UI Bind to code Generate code
- 39. iPhone Simulator
- 40. iPhone Simulator Easy for debugging
- 41. iPhone Simulator Easy for debugging No device needed
- 42. iPhone Simulator Easy for debugging No device needed Fast round-trip
- 43. Not a real iPhone!
- 44. Objective-C
- 45. Objective-C
- 46. Objective-C Superset of C, can be mixed
- 47. Objective-C Superset of C, can be mixed Simple syntax
- 48. Objective-C Superset of C, can be mixed Simple syntax Dynamic runtime
- 51. OOP in Objective-C Single inheritance class tree
- 52. OOP in Objective-C Single inheritance class tree Protocols for multi-class behavior
- 53. OOP in Objective-C Single inheritance class tree Protocols for multi-class behavior Instance variables are hidden
- 54. OOP in Objective-C Single inheritance class tree Protocols for multi-class behavior Instance variables are hidden Objects respond to messages for interaction
- 55. OOP in Objective-C Single inheritance class tree Protocols for multi-class behavior Instance variables are hidden Objects respond to messages for interaction Variables are bound to classes at runtime
- 56. OOP in Objective-C Single inheritance class tree Protocols for multi-class behavior Instance variables are hidden Objects respond to messages for interaction Variables are bound to classes at runtime There is an anonymous object type ‘id’
- 57. Syntax
- 58. Syntax
- 59. Syntax float moneyInTheBank = 0.0;
- 60. Syntax float moneyInTheBank = 0.0; var moneyInTheBank = 0.0;
- 61. Syntax
- 62. Syntax MacBookPro *myNewMac = [MacBookPro new];
- 63. Syntax MacBookPro *myNewMac = [MacBookPro new]; var myNewMac = new MacBookPro();
- 64. Syntax
- 65. Syntax if (moneyInTheBank > [myNewMac price]) { // Go buy one! }
- 66. Syntax if (moneyInTheBank > [myNewMac price]) { // Go buy one! } if (moneyInTheBank > myNewMac.getPrice()) { // Go buy one! }
- 67. Syntax
- 68. Syntax for (i=1; i<count; i++) { }
- 69. Messaging
- 70. Messaging
- 71. Messaging NSString *name = [person name];
- 72. Messaging NSString *name = [person name]; var name = person.getName();
- 73. Messaging
- 76. Messaging
- 77. Messaging NSUInteger length = [[person name] length];
- 78. Messaging NSUInteger length = [[person name] length]; var length = person.getName().getLength();
- 79. Messaging
- 84. Creating Instances Person *person = [[Person alloc] init];
- 85. Creating Instances Person *person = [[Person alloc] init]; Person *person = [Person new];
- 86. Creating Instances Person *person = [[Person alloc] init]; Person *person = [Person new]; Person *person = [Person person];
- 89. Memory Management If you allocate memory, you need to clean it up!
- 91. Memory Management NSObject *keepMe = [[NSObject alloc] init];
- 92. Memory Management NSObject *keepMe = [[NSObject alloc] init]; [keepMe retain];
- 93. Memory Management NSObject *keepMe = [[NSObject alloc] init]; [keepMe retain]; [keepMe autorelease];
- 94. Memory Management NSObject *keepMe = [[NSObject alloc] init]; [keepMe retain]; [keepMe autorelease]; [keepMe release];
- 95. Memory Management NSObject *keepMe = [[NSObject alloc] init]; [keepMe retain]; [keepMe autorelease]; [keepMe release]; NSObject *keepMe = [NSObject object];
- 96. Categories
- 97. Categories
- 98. Categories Extending classes without subclassing
- 99. Categories Extending classes without subclassing NSString *json = @”{“test”:”OK”}”;
- 100. Categories Extending classes without subclassing NSString *json = @”{“test”:”OK”}”; SBJsonParser *parser = [[SBJsonParser] alloc] init]; NSDictionary *data = [parser objectWithString:json];
- 101. Categories Extending classes without subclassing NSString *json = @”{“test”:”OK”}”; NSDictionary *data = [json JSONValue];
- 102. Categories
- 103. Categories String.prototype.getJSONValue = function() { return ... };
- 104. Categories String.prototype.getJSONValue = function() { return ... }; var json = “{”test”:”OK”}”; var myObject = json.getJSONValue();
- 105. Foundation Classes
- 106. NSString
- 107. NSString
- 108. NSString NSString *myName = @”joris”;
- 109. NSString NSString *myName = @”joris”; NSString *welcome = [NSString stringWithFormat:@”Hello %@”, name];
- 110. NSString NSString *myName = @”joris”; NSString *welcome = [NSString stringWithFormat:@”Hello %@”, name]; NSString *greeting = @”Hello ”; NSString *welcome = [greeting stringByAppendingString:name];
- 111. NSString NSString *myName = @”joris”; NSString *welcome = [NSString stringWithFormat:@”Hello %@”, name]; NSString *greeting = @”Hello ”; NSString *welcome = [greeting stringByAppendingString:name]; if ([myName isEqualToString:otherName]) { // Strings are equal! }
- 112. NSArray
- 113. NSArray
- 114. NSArray NSArray *myArray = [NSArray arrayWithObjects:@”me”, @”you”, nil];
- 115. NSArray NSArray *myArray = [NSArray arrayWithObjects:@”me”, @”you”, nil]; NSUInteger count = [myArray count];
- 116. NSArray NSArray *myArray = [NSArray arrayWithObjects:@”me”, @”you”, nil]; NSUInteger count = [myArray count]; NSString *secondItem = [myArray objectAtIndex:1];
- 117. NSArray NSArray *myArray = [NSArray arrayWithObjects:@”me”, @”you”, nil]; NSUInteger count = [myArray count]; NSString *secondItem = [myArray objectAtIndex:1]; for (NSString *name in myArray) { NSLog(@”Name: %@”, name); }
- 118. NSDictionary
- 119. NSDictionary
- 120. NSDictionary NSDictionary *myDict = [NSDictionary dictionaryWithObjectsAndKeys: @”joris”, @”firstname”, @”verbogt”, @”lastname”, nil];
- 121. NSDictionary NSDictionary *myDict = [NSDictionary dictionaryWithObjectsAndKeys: @”joris”, @”firstname”, @”verbogt”, @”lastname”, nil]; NSString *lastname = [myDict objectForKey:@”lastname”];
- 122. UIKit
- 123. Delegates
- 124. Delegates
- 125. Delegates Many UIKit classes define delegate protocols
- 126. Delegates Many UIKit classes define delegate protocols No subclassing necessary for custom behavior
- 127. Delegates Many UIKit classes define delegate protocols No subclassing necessary for custom behavior Loose coupling
- 128. Delegates Many UIKit classes define delegate protocols No subclassing necessary for custom behavior Loose coupling Easy refactoring
- 131. Connecting UI Elements Code defines outlets to UI elements
- 132. Connecting UI Elements Code defines outlets to UI elements Code responds to actions from UI
- 133. Connecting UI Elements Code defines outlets to UI elements Code responds to actions from UI UI Elements fire actions to a target
- 134. Connecting UI Elements Code defines outlets to UI elements Code responds to actions from UI UI Elements fire actions to a target Again: no subclassing
- 135. ViewControllers
- 136. ViewControllers
- 137. ViewControllers Control a UI view (with sub-views)
- 138. ViewControllers Control a UI view (with sub-views) Ready to use, out-of-the-box
- 139. ViewControllers Control a UI view (with sub-views) Ready to use, out-of-the-box Can be stacked for navigation
- 140. ViewControllers Control a UI view (with sub-views) Ready to use, out-of-the-box Can be stacked for navigation Can be initialized from code or IB
- 141. ViewControllers
- 143. ViewControllers Useful Subclasses: TableViewController
- 144. ViewControllers Useful Subclasses: TableViewController NavigationController
- 145. ViewControllers Useful Subclasses: TableViewController NavigationController TabBarController
- 146. Let’s do some coding...
- 147. Why?
- 148. Why?
- 149. Why? Fun challenge
- 151. Why? Fun challenge Frameworks Best User Experience
- 152. Why? Fun challenge Frameworks Best User Experience Inspiration
- 153. Thank you
- 154. Copyright Artwork by nozzman.com Presentation by Joris Verbogt This work is licensed under the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Netherlands License. Download at http://workshop.verbogt.nl/
Editor's Notes
- #4: Chief Developer Backend stuff / JavaScript integration
- #19: Basic description
- #22: Questions at the end Except for things that aren&#x2019;t clear
- #23: Questions at the end Except for things that aren&#x2019;t clear
- #24: Questions at the end Except for things that aren&#x2019;t clear