iOS for NSNoobs

Transcript

1. iOS FOR NSNOOBS Wiki: http://bit.ly/rEizWH Code: http://bit.ly/tFDPvB
2. WHO ARE WE? • Andrew Toulouse, Crunchyroll • Ian Davis, CSUA
3. OVERVIEW
4. OVERVIEW • Objective-C basics
5. OVERVIEW • Objective-C basics • Class definition
6. OVERVIEW • Objective-C basics • Class definition • Method declarations
7. OVERVIEW • Objective-C basics • Class definition • Method declarations • Memory management
8. OVERVIEW • Objective-C basics • Class definition • Method declarations • Memory management • Properties
9. OVERVIEW
10. OVERVIEW • Example iOS app
11. OVERVIEW • Example iOS app • “Office hours”
12. COMMENTS
13. COMMENTS • No dedicated question time scheduled, so...
14. COMMENTS • No dedicated question time scheduled, so... • Ask questions as soon as you have them! • That way we can answer them, put them in context, and take notes on *you* for future workshops
15. COMMENTS • No dedicated question time scheduled, so... • Ask questions as soon as you have them! • That way we can answer them, put them in context, and take notes on *you* for future workshops • Be interactive: ask us “why?”, prove us wrong, offer your opinion!
16. CLASS DEFINITION #import "ItsSuperclass.h" @interface ClassName : ItsSuperclass // Method and property declarations. @end ClassName.h #import "ClassName.h" @implementation ClassName { // Instance variable declarations. } // Method definitions. @end ClassName.m
17. METHOD DEFINITION - (Widget *)widgetWithLength:(int)length width:(int)width color:(UIColor *)color; - (type)nameWithParameter:(parameter_type)aParameter anotherParameter:(parameter_type)bParameter; [self fooWithName:[OtherThing name] description:@"This is an NSString" luckyNumber:9]; [@"This is an NSString" uppercaseString];
18. METHOD DEFINITION + (Widget *)widgetWithLength:(int)length width:(int)width color:(UIColor *)color; + (type)nameWithParameter:(parameter_type)aParameter anotherParameter:(parameter_type)bParameter; [Blah fooWithName:[OtherThing name] description:@"This is an NSString" luckyNumber:9]; [NSString stringWithFormat:@"%@", count];
19. HANDS-ON
20. MEMORY MANAGEMENT
21. MEMORY MANAGEMENT • Objects only (no primitives)
22. MEMORY MANAGEMENT • Objects only (no primitives) • Video game lives
23. MEMORY MANAGEMENT • Objects only (no primitives) • Video game lives • The essentials: retain/release/autorelease
24. MEMORY MANAGEMENT • Objects only (no primitives) • Video game lives • The essentials: retain/release/autorelease • Matching pairs
25. MEMORY MANAGEMENT • Objects only (no primitives) • Video game lives • The essentials: retain/release/autorelease • Matching pairs • How it works in collections
26. MEMORY MANAGEMENT • Objects only (no primitives) • Video game lives • The essentials: retain/release/autorelease • Matching pairs • How it works in collections • Mutability: copy/mutableCopy
27. PROTOCOLS id<NSCopying, NSCoding> someObjectImplementingProtocols
28. PROPERTIES
29. @property(nonatomic, retain) Garply *myObject; @synthesize myObject; and - (Garply *)myObject { return myObject; } - (void)setMyObject:(Garply *)newObject { if (myObject != newObject) { [myObject release]; myObject = [myObject retain]; } } - (Garply *)myObject; - (void)setMyObject:(Garply *)newObject; and become
30. HANDS-ON Wiki: http://bit.ly/rEizWH
31. UIKIT
32. UIKIT • What is UIKit?
33. UIKIT • What is UIKit? • What is a framework?
34. HANDS-ON Code: http://bit.ly/tFDPvB
35. OFFICE HOURS