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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reference techniques by design pattern. and come complete with code snippets you can customize for use in your
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W e all love Java, but Mac OS X is looking awfully cool these days and iPhone OS de-
velopment is the most exciting new environment since, well…, since Java! If only
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to embrace Core Data,.
Both languages are object-oriented, use similar inheritance models, string classes, garbage
The depth and breadth of Core Data coverage alone is worth the price of ad-
collection, serialization, threads, introspection, and communications. They also embrace
mission, but there’s so much more. This book covers a variety of networking
proven design patterns like Model-View-Controller and property accessors. You’re already a
mechanisms, from GameKit’s relatively simple BlueTooth peer-to-peer model,
good portion of the way there and you haven’t even opened this book!
to the addition of Bonjour discovery and network streams, through the com-
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
pro cient in Objective-C. Most important, we’ll show you how to take advantage of features take you through advanced topics, such as Concurrent Programming and
unique to Objective-C and incorporate them into your designs. Don’t waste your hard-earned techniques for Debugging.

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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,
The Macintosh Programming Primer series, and Ultimate Mac Programming. His

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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Shelve in Shelve in:
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this print for content only—size & color not accurate this print for content only—size & color not accurate
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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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