I phone udvikling best brains

iPhone Development

onsdag den 7. september 2011

Agenda
• Requirements
• The Objective C Programming Language
• Cocoa Touch & Basic Design Patterns
• Apple Developer Tools
• Apple Developer Portal
• Resources


Who am I?


Hvem er jeg?
• Freelance udvikler i Barkode ApS & Bigger
• Objective C, Java, Python
• Udvikler af “Risteriet”, “MitNykredit”
iPhone applikationerne
• Arbejder p.t. på en ny universal app for
Infopaq International A/S
• Mac fanboy!

Hvorfor iOS Platformen?
• Nysgerrig efter en ny platform.
• en ny platform
• en ny type device
• Andre problemstillinger end Enterprise Java
• Et “nyt” programmeringssprog og et nyt framework.
• Mac fanboy!


Risteriet
• Primært tænkt som reklame for et
mindre kafferisteri i det indre København.

• Benyttede frameworks:

• Core Location

• MapKit

• MediaKit

• JSON (eksternt framework)

• Core Animation


Mit Nykredit
• Nykredits Mobile Bank

• Ekstremt hurtigt udviklet

• Udvalgte benyttede frameworks:

• Core Location / MapKit

• MediaKit

• Core Animation og en del custom UIView’s

• Valuta beregner

• Pinkode husker

• Diverse tabeller

• ...

• Webservices


Requirements


Get a Mac!

• En Mac computer og helst et iOS device
• Medlem af Apples iOS Developer Program - $99
• Installering af SDK og Developer Tools
• “Live by the rules deﬁned by the mothership”


The Objective C
Programming Language


Objective C
• Superset til C og derfor kan man benytte C og C++

• Objekt orienteret (1986) og baseret på message
passing ala Smalltalk.

• Udvidet i 2006 med properties, garbage collection og
fast enumeration etc.

• Memory Management

• OSX - Garbage Collection.

• iOS - explicit memory management
(reference counting) (iOS 3/4).

• “Automatic Reference Counting” (iOS 5)


Objective C Syntax 1/3
@interface classname : superclassname
{
// instance variables
}

@property (nonatomic, retain) inst_type inst_name;

+ classMethod1;
+ (return_type)classMethod2;
+ (return_type)classMethod3:(param1_type)param1_varName;

- (return_type)instanceMethod1:(param1_type)param1_varName andOtherParameter:
(param2_type)param2_varName;

- (return_type)instanceMethod2WithParameter:(param1_type)param1_varName
andOtherParameter:(param2_type)param2_varName;

@end


@implementation classname

@synthesize type_name;

+ (return_type)classMethod
{
// implementation
}
- (return_type)instanceMethod2WithParameter:(param1_type)
param1_varName andOtherParameter:(param2_type)param2_varName
{
// implementation
}
@end


@implementation ClientsMapViewController

@synthesize titleBar, mapView;

#pragma mark -
#pragma mark Lifecycle

// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
[super viewDidLoad];
!
! UIImageView *background = [[[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 320, 44)] autorelease];
! background.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
! background.image = [UIImage imageNamed:@"dark_wood_tile"];
! [self.titleBar addSubview:background];
! // Sending the image to the back ensures that the text isn't shadowed by the image
! [self.titleBar sendSubviewToBack:background];

! UIFont *font = [UIFont fontWithName:@"Lobster 1.4" size:17];
! UILabel *header = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];
! header.text = @"Clients in the center of Copenhagen";
! header.font = font;
! header.textAlignment = UITextAlignmentCenter;
! header.textColor = [UIColor whiteColor];
! header.backgroundColor = [UIColor clearColor];
! self.titleBar.topItem.titleView = header;
!
...

}
...


Cocoa Touch
&
Basic Design Patterns


Cocoa Touch
Selected Frameworks
• Core Audio • Open GL ES • Map Kit
• Open AL • Quartz 2D • Store Kit
• Media Library • Bonjour • Event Kit
• AV Foundation • Webkit • Game Kit
• Core Data • BSD Sockets • Core Image
• SQLite • Address Book • UI Kit
• Core Animation • Core Location

Model-View-Controller
Controller Coordination

Update Changes
Controller

Changes Update

Model View

Model Data View Display


Delegate Pattern
• Formål: En delegate er et objekt, der får muligheden for
at reagere på ændringer i eller påvirke adfærden hos et
andet objekt.
• I Cocoa og Cocoa Touch benyttes følgende navne
konvention for delegate metoder:
• should

• will

• did


Apple Developer Tools


Xcode 4
• Source code editor
• Compiler (LLVM & GCC)
• Debugger (LLDB & GDB)
• Static Analysis
• SCM (Git, Subversion)
• DocViewer (Dokumentation)


Xcode 4
• Plus

• Static Analysis
(http://clang-analyzer.llvm.org/)

• Markant lettere at uploade til iTunes Connect
og tilføje devices end tidligere

• Git integration

• Minus

• Desværre stadigvæk lidt buggy

• Refactoring?


Interface Builder

• GUI Builder til hhv. iOS og OSX
programmer.

• Interface designet gemmes i XIB
ﬁler og kompileres til NIB - realt
en serialisering af objekter.

• Utroligt simpelt men stærkt.


iOS Simulator

• Til hurtig afvikling af dine
programmer - men ikke devicet
da simulator og device ikke er
100% ens.

• Understøtter ﬂere typer af SDKs
samt Retina display og iPad.


Instruments

• Instruments er din ven!
• Bruges til at finde memory leaks,
og over releases (NSZombie)

• Bruges også til at optimere
performance, finde flaskehalse
eller afvikling af automation
scripts.


Demo


Apple Developer Portal


Provisioning Portal
• Configure Profile
• Certificates
• Signering af App før den kan afvikles på et device
• Devices
• 100 devices
• AppID
• Bruges bla. til In App Purchases, Push Notification, Hardware
Accessory, Game Center & iCloud


Provisioning Portal
• Download & Install
• Development Provisioning Profile indeholder:
• Development Certificates
• Unique Device Identifiers
• App ID.
• Build & Go
• Ad hoc distribution - beta builds
• AppStore distribution - production builds


iTunes Connect

• Produktet oprettes i AppStore via iTunes Connect
• Beskrivelse af produktet samt keywords
• Kategori
• Screen Shots
• Tilgængelighed (lande)


iTunes Connect

• Customer Reviews
• Crash reports
• Financial reports
• Sales/Trends
• Manage Users


One more thing...


The new kid on the block
• AppCode fra Jetbrains
• Bygger på Jetbrains IntelliJ framework
• Refactoring kendt fra Jetbrains andre
produkter så som IntelliJ, PyCharm,
RubyMine etc.

• Integration med andre (D)VCS
• Plugin ecosystem
• Kræver at Xcode og SDK allerede er
installeret


Resources


Online
• Google Group - cocoa-unbound
http://groups.google.com/group/cocoa-
• CocoaDev - wiki
http://cocoadev.com/
unbound/

• Cocoa Dev Central
• Cocoa With Love - blog
http://cocoawithlove.com/
http://cocoadevcentral.com/

• Der ﬁndes en del ﬁne
• Cocoa is my girlfriend -blog
http://www.cimgf.com/
frameworks på Github
http://github.com

• Apple Developer Connection
Forum


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• Learn Objective-C, the language of native Mac and iPhone apps, by leveraging nterested in iPhone development? Want to learn more? Whether you’re a

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W e all love Java, but Mac OS X is looking awfully cool these days and iPhone OS de-
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More iPhone 3 Development continues right where Beginning iPhone 3 Develop-
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The depth and breadth of Core Data coverage alone is worth the price of ad-
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We’ll show you how to use what you know about Java to understand and become quickly plexity of acquiring information through Web File Access. Dave and Je also
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iPhone 3 Development.
James Bucanek has over 25 years of experience in software and systems development.
Dave Mark is a long-time Mac developer and author and has written a num-
Having made the transition to Mac OS X many years ago, he has never looked back.
ber of books on Macintosh development, including Learn C on the Macintosh,
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for
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blog can be found at www.davemark.com.

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Je LaMarche is a longtime Mac developer, and Apple iPhone
Developer. With over 20 years of programming experience, he’s written
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starting in the late 1990s, and then later as an independent consultant.

Bucanek Dave Mark | Jeff LaMarche

Mark
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NSCoder Night
• NSCoder Night Copenhagen
• Onsdag kl. 19-22
• RETRO Nørrebro
Jægersborggade 14
2200 København N

• Twitter
@copenhagencocoa


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