apple ios
DESCRIPTION
Presented about Apple iOS in the 8th semester technical seminar and its versions.TRANSCRIPT
VISVESVARAYA TECHNOLOGICAL UNIVERSITY BELGAUM
Technical Seminar On “Apple iOS”
By CHETHAN H A 4GH08CS010 Under the guidance of Mr.Annaiah.,B.E.,M.Tech
Asst.professorSeminar co-ordinator
Mr.Chethan K.C.,B.E,M.Tech
Asst.professor
Head of the DepartmentDr. K.C Ravishankar B.E., M.Tech., Ph.d
Professor & Head,Dept.of CS&E, GEC,Hassan
February 16 2012
Apple iOS
Mobile Operating System
o Derived from Mac os X
o Programmed in C ,C++ and objective C
o Developed for iPhone and extended to iPod Touch and iPad
o Initially released in june 2007
o Available in 34 languages worldwide
o The Kernel Type is Hybrid Kernel Architecture
The iOS Architecture
Similar to basic architecture found in Mac OS X
Acts intermediate between applications and hardware
iOSApps
Hardware
The Layers in iOS Architecture Technology
Consists of four Abstraction layers• Core OS Layer
• Core service Layer
• The Media Layer
• The Cocoa Touch Layer
Uses Darwin foundation and therefore a unix like OS
The user interface of iOS is based on the concept of direct manipulation, using multi-touch gestures.
The core of iOS
Accelerate Framework (Accelerate.framework)
This framework contains interfaces for performing DSP, linear algebra, and image-processing calculations
Core Bluetooth (CoreBluetooth.framework)
This framework allows developers to interact specifically with Bluetooth Low-Energy ("LE") accessories
External Accessory Framework (ExternalAccessory.framework)
This framework provides support for communicating with hardware accessories attached to an iOS based device
Contains the low-level features such as
Core services Layer
Contains the High-level features that all applications use such as
iCloud Storage
lets your application write data to a central location and access those items from all user’s computers and iOS devices
iCloud
Core services framework
Includes Accounts.framework, AddressBook.framework and CoreData.framework for user accounts ,contacts and for managing model-view-controller application
Media Layer
The Media layer contains the graphics, audio, and video technologies
Graphics Technologies
Includes Core Graphics , Core Animation and OpenGL technologies which handles 2D vector and animating views and 2D and 3D figures
Audio Technologies
Supports rich audio experince and audio formats like AAC, Apple Lossless(ALAC),A-Law and Linear PCM
Video technologies
The iOS support the playback of movie files with the .mov, .mp4, .m4v, and .3gp filename extensions
Compression standards in Video Technologies
● H.264 video, up to 1.5 Mbps, 640x480 pixels, 30 frames per second• H.264 video, up to 768 Kbps, 320x240 pixels, 30 frames
per second
• MPEG-4 video, up to 2.5 Mbps, 640x480 pixels, 30 frames per second
Media layer also consists of different frameworks like CoreAudio.framework, CoreImage.framework and CoreText.framework
Cocoa Touch Layer
The Cocoa Touch layer contains the key frameworks for building iOS applications
The layer defines the basic application and support for key technologies such as multitasking, touch-based input,pushnotifications, and many high-level system services
Cocoa Touch follows a Model-View-Controller (MVC) software architecture
The iOS Development
The iOS SDK (Software Development kit)
Includes interfaces,tools and resources
Includes special packages called Frameworks
A framework is a directory that contains a dynamic shared library and the resources (such as header files, images, helper applications, and so on)
Key Components of SDK
Xcode Tools Xcode Instruments
iOS simulator
iOS Developer Library
Xcode Tools
• An Integrated Development Environment (IDE) that manages to edit,compile,run and Debug source code
• Xcode is a suite of tools used for developing softwares for Mac OS X and iOS
• Xcode suite supports C, C++, Objective C, Objective C++, Java, AppleScript, Python and Ruby source code with a variety of programming models
• Instruments are the runtime performance analysis and debugging Tools
• iOS Simulator is a Mac OS X application that simulates the iOS technology stack, allowing you to test iOS applications on Macintosh computer
Xcode Version series
1.x series
2.X series
3.x series
4.x series
The latest stable release is Xcode version 4.2.1, which is available on the Mac App Store
iOS Distribution
iOS Version History
iOS 1.x: initial OS
iOS 2.x: second major OS
iOS 3.x: third major OS
iOS 4.x: fourth major OS
iOS 5.x: fifth major OS
On June 29, 2007, Apple released the first version of iOS
The Latest Stable release is version 5.0.1 (Build 9A406) for iPhone 4 S
The Latest Stable release is version 5.0.1(Build 9A405) for iPhone,iPhone 3G,iPhone 3GS ,iPhone 4,iPod Touch and iPad
The Latest unstable release is version 5.1(Build 9B5141a)
New features in iOS 5
iMessages/Messages - Allows to send text,photos,videos,contacts and locations and shows when other person(s) is typing
Mail - Rich text formatting (bold, italics and underline) - MIME support
Safari - Ability to open pages in background or in new page
iCluod - iTunes, iBooks, Photo, Contacts, Calendar, Notes, Reminders, Mail, Safari bookmarks and device settings, app data, iWork and backup data saved in iCloud and automatically or manually downloaded to all linked devices
YouTube - Ability to play 480p/720p videos over 3G (iPhone only)
Game center - Photos for friends - Ability to make your Profile public or private
Market Share
Conclusion
The objective of the seminar was to study and enhance our knowledge about Apple iOS , mobile operating system. We have learnt about the new features of the iOS 5 operating system.
So we have learnt about the layers of iOS technology viz. core OS, core services, media and cocoa touch.
The fact that all the information regarding iOS cannot be bound in this Presentation, I have tried to cover almost all points that made study of iOS worthy.
Any Q?
ThanQ You