This is the first lecture in the iPhone Course in FCI - Cairo University by PiTechnologies This is part two of the first day about "Introduction to iOS"

1. iOS 2 A H M E D Y O S S E F
PiTechnologies

2. Agenda
iOS Architecture
Cocoa Touch Layer
Media Layer
Core Services Layer
Core OS
Most Used
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3. iOS Architecture

4. iOS Layers
Cocoa Touch Layer Objective-C
Media Layer Objective-C
Core Service Layer C
Core OS Layer C
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5. What is Layer
Layer is a group of frameworks, has common
purpose.
In general you don’t use all layers, you also don’t
use all frameworks in certain used layer.
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6. What is Framework ?
Framework: is a directory that contains a dynamic
shared library and the resources (such as header
files, images, helper applications, and so on)
needed to support that library.
Framework: helps you to write applications
independent of the hardware.
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7. Core OS Layer

8. Layer Role
The Core OS layer contains the low-level features
that most other technologies are built upon. Even
if you do not use these technologies directly in
your applications, they are most likely being used
by other frameworks. And in situations where you
need to explicitly deal with security or
communicating with an external hardware
accessory, you do so using the frameworks in this
layer.
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9. Main Frameworks
Accelerate.framework
ExternalAccessory.framework
Security.framework
System.framework
Threading, Networking, Files IO, Standard IO,
Memory and Math
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10. Core Service Layer

11. Layer Role
The Core Services layer contains the fundamental
system services that all applications use. Even if
you do not use these services directly, many parts
of the system are built on top of them.
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12. Main Frameworks
Address Book framework (AddressBook.framework)
CFNetwork Framework (CFNetwork.framework)
Core Data Framework (CoreData.framework)
Core Foundation Framework
(CoreFoundation.framework)
Core Media Framework (CoreMedia.framework)
Core Telephony Framework (CoreTelephony.framework)
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13. Main Frameworks
EventKit Framework (EventKit.framework)
Foundation Framework (Foundation.framework)
Core Location Framework (CoreLocation.framework)
Mobile Core Services Framework(MobileCoreServices.framework)
Store Kit Framework (StoreKit.framework)
SQLite library
System Configuration Framework (SystemConfiguration.framework)
Quick Look Framework (QuickLook.framework)
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14. Media Layer

15. Layer Role
The Media layer contains the graphics, audio, and
video technologies geared toward creating the
best multimedia experience available on a mobile
device. The technologies in this layer were
designed to make it easy for you to build
applications that look and sound great.
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16. Main Frameworks -
Video
Core Video (CoreVideo.framework)
Core Text Framework (CoreText.framework)
Image I/O Framework (ImageIO.framework)
Assets Library Framework (AssetsLibrary.framework)
Core Graphics Framework (CoreGraphics.framework)
Quartz Core Framework (QuartzCore.framework)
OpenGL ES framework (OpenGLES.framework)
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17. Main Frameworks -
Audio
AV Foundation framework
(AVFoundation.framework)
Core Audio Frameworks (CoreAudio.framework,
AudioToolbox.framework and AudioUnit.framework)
Open Audio Library (OpenAL)
Media Player framework (MediaPlayer.framework)
Core Midi Framework (CoreMIDI.framework)
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18. Cocoa Touch Layer

19. Layer Role
The Cocoa Touch layer contains the key
frameworks for building iOS applications. This
layer defines the basic application infrastructure
and support for key technologies such as
multitasking, touch-based input, push
notifications, and many high-level system services.
When designing your applications, you should
investigate the technologies in this layer first to
see if they meet your needs.
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20. Main Frameworks
AddressBookUI.framework
EventKitUI.framework
GameKit.framework
iAd.framework
MapKit.framework
MessageUI.framework
UIKit.framework
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21. Most Used

22. Most Used Frameworks
During development you mainly need two
frameworks:
UIKit framework - Cocoa framework
Foundation framework - Core service framework
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23. UIKit.framework
The UIKit framework (UIKit.framework) provides
the key infrastructure for implementing
graphical, event-driven applications in iOS
Main Features:
User interface,
Graphics
Touch events
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24. Foundation.framework
The Foundation framework (Foundation.framework) provides Objective-C
wrappers to many of the features found in the Core Foundation framework
Main Features:
Collection data types (arrays, sets, and so on)
String management, Date and time management
Raw data block management
Preferences management
URL and stream manipulation
Threads and run loops
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