Anonymous Object - id class loosely typed
Selectors - ?
Sunday, October 11, 2009
What is the difference between ObjectiveC and Cocoa?
Object C is a language and Cocoa is Apples implementation of some classes in Objective C language.
Object hierarchy in Cocoa
NSObject is the promordial class.
It takes care of memory management
UIControl inherits from NSObject and it takes care of ?
All other UI classes inherit from UIControl.
Outlets - Target Actions
Controller objects have outlets that are pointers to instances of GUI Objects like slider and Button. These GUI Objects havd target actions as a method to the object referring to them.
Action/Invoke.
Cocoa Touch Architecture
UI Kit
User Interface Elements
Application Runtime
Event Handling
Hardware APIs
Foundation
Utility Classes
Collection Classes
Object Wrappers for system services
Subset of Foundation in Cocoa
IPHONE OS Architecture Layer Services
Core OS
OS X Kernel
Mach 3.0?
BSD?
Sockets
Security
Power management
KeyChain
Certificates
File System
Bonjour - to communicate with local devices
Core Services (Written in C )
Collections
Address Book
Networking
File Access
SQLite
Core Location
Net Services
Threading (POSIX Threading?)
Preferences
URL Utilities
Media
Core Audio
Open AL
Audio Mixing
Audio Recording
Video Playback
JPG,PNG,TIFF
PDF
Quartz(2D)
Core Animation
OpenGL ES
Cocoa Touch
Multi touch events
Multi touch controls
Accelerometer
View Hierarchy
Localization
Alerts
Web views
People picker
Image picker
Controllers
ARCHITECTURE LAYERS
MAC OS X
Core OS
Core Services
Media
Cocoa
IPHONE OS
Core OS
Core Services
Media
Cocoa Touch
The MACOS and IPHONE OS are similar excep the user interface features like iphone ha no mouse and the menu bar.
COCOA
Application Development framework?
IDEA to a PROTOTYPE to an APP.
IDEA to a prototype made easy with a development framework.
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