SpringPeople Introduction to iOS Apps Development

© SpringPeople Software Private Limited, All Rights Reserved.© SpringPeople Software Private Limited, All Rights Reserved.
Introduction to iOS Apps
Development

© SpringPeople Software Private Limited, All Rights Reserved.
Tracking The Past
 Steve Jobs started Apple Computers in 1980s.
 John Sculley acquired control – NeXT Computers emerged in 1985
 Closed in 1993, renamed to NeXT Software Inc.
 Brad Cox invented Objective-C in 1983
 Steve Jobs licensed Objective-C in 1998
 Development tools commercial version – NeXTSTEP
 OS and Dev Tools based on UNIX
 Apple acquired NeXTSTEP in 1996 – renamed NeXTSTEP to COCOA.

The Success Song
 Apple produced its first innovation iMAC machine 1998.
 2001 – produced the portable masterpiece iPOD
 June 29, 2007 rocked the mobile market with its Smartphone –
iPhone
 Apple Stores recorded 2,70,000 units sale in two days
 iPhone topped a million units in a month and a half.
 July 11, 2008 Apple released iPhone 3G and its public deployment
of iPhone SDK.
 iPhone SDK and Cocoa downloadable free by developers

iPhone Specifications
Core Specifications: Specs for both the 2007 and 2008 3G release
4.7 or 4.8 ounce computing devices
620 MHz ARM CPU under-clocked to improve battery performance and
reduce heat.
128 MB Dynamic RAM (DRAM)
4-16 GB Flash Memory
Built-on Apple’s OS X

Development Environment
• Most Object-Oriented Development Environments consist of:
 An Object-oriented Programming Language
• Objective-C
 A library of Objects
• Cocoa Frameworks
 A Suite of Development Tools
• Xcode and Interface Builder
 A Runtime Environment
• Acts as a Kind of Operating system for Objective-C.
• Typically, you don’t need to interact with runtime
• directly

Frameworks
 Frameworks – classes compiled together into a reusable
library of code.
 Built in frameworks - /System/Library/Frameworks
 Cocoa is made up of:
Foundation: Standard values, collection, utility classes.
Strings, dates, lists, threads, timers.
AppKit: User Interface Frameworks. Windows, buttons,
text fields, events, drawing classes
Core Data: Core data is a persistence frameworks. Makes it
easy to save and reload files.

IOS Architecture
iOS can be considered as architected into Layers
 Cocoa Touch at the Developer interface level Abstracts from
the more Core layers

Core Operating System
The Core OS System offers :
 Threading (POSIX Threads)
 Networking (BSD sockets)
 File-System Access
 Standard I/O
 Bonjour and DNS services
 Locale Information
 Memory Allocation
 Math Computations

Core OS Features
 Accelerate Framework
 DSP, Linear Algebra, Image Processing
 Core Bluetooth (Objective-C)
 Connect to Bluetooth devices
 External Accessories Framework (Objective-C)
 Communicate Through 30-pin connector
 Security Framework
 Manage Certificates, Keys and Policies

Core Services
 CFNetwork
 Low Level Networking
 Core Data Framework (Objective –C)
 Persistence Storage in SQLite Database
 Core Foundation Framework
 Collections, Date/Time, Threading
 Objective-C Wrapper: Foundation
 Core Location Framework (Objectvive-C)
 GPS, Cell, Wi-Fi Locations
 Core Telephony Framework (Objective-C)
 Cell Provider Info, Receive Call Events
 Store Kit Framework (Objective –C)
 In-App Purchase

Media Layer
 Core Graphics
 2D Vector and Raster Graphics
 Core Animation
 View Animation
 Core Image (Objective-C)
 Image and Video Manipulation, Filters
 Open GL ES and GLKit
 Hardware-accelerated 3D graphics
 Core Text
 Text layout and Rendering
 Image I/O
 Assets Library
 Access User Photos and videos

Media Audio/Video
 Media Player Frameworks (Objective-C)
 Access iTunes Library and Simple Playback
 AV Foundation Frameworks (Objective-C)
 Audio and Video Capture and Playback
 Open AL
 Positional Audio
 Core Audio Framework
 Advanced Audio Playback
 Core Video Framework
 Advanced Video Playback
 AirPlay (Objective-C)
 Stream Audio and Video to Other Devices

Media Layer Hierarchy
AV Foundation

COCOA Touch
 Story Boards (iOS5)
 Gesture Recognition
 Documents
 Multi Tasking
 Printing
 Data Protection
 File Sharing
 Local Notifications
 Push Notifications
 Peer-peer Services
 External Display Support
 System View Controllers

COCOA Touch Frameworks
 Address Book
 Contacts
 Event UI Kit
 Calender
 Map Kit
 Maps
 Message UI
 Email and SMS
 Game Kit
 Multiplayer Games
 iAd
 Advertisements
 Twitter
 Tweets
 UIKit
 Everything Else

Objective - C
 Objective-C is a superset of C, which enables sophisticated Object oriented
programming mostly based on SmallTalk.
 Designed to give C full OOPS support.
 Objective-C code is compiled by gcc, the GNU C compiler. It enables to
freely mix C, C++ and Objective-C code in a single file.
 Objective-C is the foundation of Cocoa – a whole lot of utility functions.
 Thousands of classes/libraries are wrapped into the Foundation
Frameworks.
 Cocoa also contains interface classes – UIKit and other classes like the
MapKit, Address Book UI all wrapped into Cocoa Touch.

Say “HI” To Objective - C
 #import <Cocoa/Cocoa.h>
 #import “AppDevegate.h”
 NSLog(@”Getting the first message”);
 The Important typedef
 The Code sense
 Everything is Pointer*
 The iOS Autorelease Pool

Start Developing your own iOS
Apps In 3 Days Flat
Attend the 3-Days “iOS (iPhone & iPad) Workshop”
View Complete Details

Who will benefit?
Professionals who have been working with any object-oriented programming
language (Java, C++, C, C# etc)
View Complete Details

Q & A
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SpringPeople Introduction to iOS Apps Development

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