INTRODUCTION AND HOW TO OF IOS

HISTORY OF IOS

iOS is the name (as of version 4.0) of Apple’s platform for
mobile applications
The iPhone was released in the summer of 2007
According to Wikipedia, it has been updated 30 times
since then, with the 31st update slated to occur when
version 4.3 is released soon (currently in beta)
iOS apps can be developed for iPhone, iPod Touch and
iPad; iOS is used to run Apple TV but apps are not
currently supported for that program.

iOS 4.2

I’ll be covering iOS 4.2 which is the current “official
version”
Version 4.2 in November 2010 was significant in that it
represented the first time that the same OS ran across
all three hardware platforms.
Until that release iPad had been running version 3.2
which had been created specifically for that device.

 

Acquiring the Software

To get the software required to develop in iOS
Go to http://developer.apple.com/
Click on iOS Dev Center
Log in (free registration is required)
Download the release called
Xcode 3.2.5 and iOS SDK 4.3
Double click the .dmg and run the installer.

 

Tools

Xcode: Integrated Development Environment
Provides multiple iOS application templates
Interface Builder
Provides drag-and-drop creation of user interfaces
iPhone Simulator
Provides ability to test your software on iPhone & iPad
Instruments: Profile your application at runtime

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