Andri YadiPresident, ID-ObjC | CEO, DyCode

@andri_yadi | a (at) dycode (dot) comhttp://andriyadi.me

Introduction to iOS DevelopmentO!ine Class Jasakomer (Special iOS), April 15, 2012

about me

The !rst & largest iOS & OSX developer community in Indonesia

ID-ObjectiveCPresident

4 years in a row

2011 - now

start a company & code for food9 years in mobile development

a movie freak

iOS Devices

21

Start developing iOS apps Today!

http://developer.apple.com/ios

Xcode iOS Simulator iOS Developer Library

Required Stu!s

Latest iOS SDK

27

Installing Tools

Optional Stu!s

Actual iOS devices

For debugging to device & deployment to AppStore

Some development stuffs

Objective-CC + OOP " C++

A superset of C:• Syntactical convention for de#ning

classes & method• Syntax for method invocation• Syntax for declaring & synthesizing

properties• Static & dynamic typing• Blocks• Extension: protocol & categories

Objective-C Advantages:• Dynamic typing:

enables to determine the class of an object at runtime

• Dynamic binding:allows to determine the method to call at runtime instead of at compile-time

• Dynamic loading:allows to add modules of code & other resources at runtime.

Classes & Objects

Methods & Messaging

[aMutableArray insertObject:anObject atIndex:0];

[[self aMutableArray] insertObject:anObject atIndex:0];

[self.aMutableArray insertObject:anObject atIndex:0];

Blocks

int result = myBlock(4);

Protocols & Categories

@interface NowPlayingController : UIViewController<UIScrollViewDelegate, ProfileViewDelegate> { }@end

Protocol == Interface in other OOP language (Java, C#)

@protocol ProfileViewDelegate- (void)profileView:(ProfileView *)profileView doSignInWith:(AuthProviderType)signInType sender:(id)sender;

@optional- (void)profileView:(ProfileView *)profileView doSignOut:(id)sender;@end

Category, enables to extend a class without subclassing it@interface NSDate (Additions)+ (NSDate *)dateFromTimeString:(NSString*)timeString;+ (NSDate *)dateWithJSONString:(NSString *)json;

- (NSDate *)dateByAddingDays:(NSInteger)numDays;- (NSDate *)dateByAddingHours:(NSInteger)numHours;@end

More details:http://bit.ly/AF8EiJ

Design Pattern

Model-View-Controller design pattern

Model-View-Controller design pattern

NowPlayingController

NowPlayingView

NowPlaying

Reference countingNo garbage collector support (yet)

Autorelease Pool

Memory Management

iOS frameworks

Enable apps to store user documents and key value data

Storage

Push changes to all user’s computers and devices

Easily integrate Tweet Sheet

Access system-wide Twitter account from within app

Wrap OAuth request & response

Memory management becomes compiler’s job

Manually enabled in XcodeIt’s NOT a garbage collector!

Automatic ReferenceCounting (ARC)

No need to deal with retain & release by yourself

Layout the app’s work!ow & design user interfaces

Can be loaded dynamically

Storyboard

Specify transitions & segues between views

Image processing framework "nally comes to iOS

Advanced features: red-eye reduction, face recognition

CoreImage

Provides built-in "lters: color e#ect, distortions, transitions

Take advantage of the latest hardware

Apple-developed OpenGL ES extensions

GLKit: new high-level framework

Cocoa TouchFoundation, UIKit, Multi-Touch Gestures

GraphicsCore Graphics, Core Animation, Core Image, Core Text, OpenGL ES

CoreDataDatabase, Object-Relational Mapping, optimized for mobile - > 1 million objects store

Audio & VideoMedia player, Core Audio & OpenAL, iPod library, HTTP Live Streaming

NetworkingBonjour, Peer to peer, WebKit framework, BSD socket

Core Location & MapKit

MultitaskingNew kind of multitasking

External display support

AirPrintWireless printing to AirPrint-enabled printers. Hack available

Push & Local Notification

Game CenterSocial gaming platform

iAdIntegrated advertising platform

In-App PurchasePayment inside applications

Human Interface Design

GUI Elementshttp://www.teehanlax.com/downloads/iOS_5_GUI_iPhone4S.psd.zip

Storyboard

The app will look like these

App Store Submission

Finally, on the App Store

you app can use this badge!

Everything is here: http://developer.apple.com/ios

https://developer.apple.com/library/ios/#referencelibrary/GettingStarted/RoadMapiOS/Introduction/Introduction.html

Let’s see some code

DYCODE IS HIRING!

If you think you’re awesome, either mobile developer guru or still early learner, send your awesome CV to: hrd@dycode.com