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Ankit Gautam(0709113013)

Atul Yadav(0709113020)Chetan Singh(0709113023)

Chinki Singh(0709113024)

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iPhoney Internet and multimedia enabled

smart phones.

y Designed and marketed by

Apple Inc.

y Launched on Jan 9,2007.

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iPhone models iPhone(original)

iPhone 3G

iPhone 3GS

iPhone 4

iPhone 4 released on June 24,2010

Approx 6.4 million iPhone users in U.S.

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iOSyApples mobile operating system.

y Derived from Mac OS

y Platform Dependent OS

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iPhone Applicationy Written in Objective-C.

y Third Party Application.

y SDK released on March 6,2008.

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iPhone SDKSDK consists of:

y Xcode

y Interface Builder

y iPhone simulator

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Apple App Storey Upload/Download iPhone applications.

y Uploading your applications Developer Registration

Standard Package - $99/year.

Enterprise Package - $299/year.

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Downloading an application.

Select application from App Store.

Do Payment to download the application.

Price of application is set by the developer.

70% of price/download - developer

30% of price/download - Apple

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y iPhone application development HUGE MARKET

y Till Sep 1,2010 No. of application in App Store : 2,50,000

No. of downloads from App Store: 6.5 Billion

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XCode

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X Code IDE

y X code is an IDE for creatingiPhone and Mac Applications.

y X code comes with integrated

Cocoa framework ,GNUcompiler,I phone simulator,

Interface Builder.

yX code supports developmentin languages such asC,C++,Objective C,ObjectiveC++.

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X Code Featuresy Source Editor.

y Interface Builder.

y iPhone Simulator.

y Compilers.

y Complete Documentation.

y Cocoa Framework.

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Cocoa Frameworky The Cocoa frameworks consist of libraries, APIs, and

runtimes that form the development layer for all of

Mac OSX.y By developing with Cocoa, you will be creating

applications the same way Mac OSXitself is created.

yYour application will automatically inherit the great

behaviors and appearances of Mac OSX.y Using Cocoa with theXcode IDE is simply the best way

to create native Mac applications.

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I Phone Simulatory The iPhone Simulator

runs your application inmuch the same way asan actual iPhone device .

y It is quick to launch anddebug

y It can even simulatetouch gestures by usingthe mouse.

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Interface Builder

y Interface Builder allowsCocoa developer to createinterface for applications.

y The resulting interface isarchieved as a .nib file .

y The user interface objectscontain items like text fields,and pop-up menus ,buttons.

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y On running an application, the proper NIB objects are

unarchived & connected with the binary of their

owning application .

y Interface Builder's palletes that contains user interface

objects are completely extensible.

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Performance Analysis Tool

y A truly unique application that helps you track theperformance of Mac OS X and iOS applications .

y Instruments collects data such as disk, memory, or CPUusage in real time, either on your Mac or remotely from aconnected iPhone.

y The data is graphically displayed as tracks over time,making it easy to pinpoint problem areas.

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X code Distinctive AspectyWhile code is written on it,it compiles code in the

background.

yWith ZERO LINK feature, only the files that arenecessary are linked at build time making linking veryfast.

y Apple came up with Fix and Continue that allows youto find bugs, and fix them, without ever closing theapplication .

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y X code has the ability to distribute (over a networkusing bonjour protocol) the current build of your

project to others running X code.

y The Documentation Viewer in Xcode allows you to

get vital information on various aspects of Xcode,

Cocoa, Objective c etc.

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User Supporty Easy to learn.

y Flexible.

y Familiar interfaces.

y Rapid development support.

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X code releasesy After 1.x,2.x,3.x series, recently X code 4 is released

by Apple in June 2010.

y X code 4 contains Interface Builder integrated in itunlike all other previous releases.

y X code 4 has high performance LLVM compiler

integrated in it.

y Like LLVM, the new LLDB debugger engine is

designed to consume much less memory, and be a

rocket when it comes to performance.

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Objective-C

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Introductiony Objective-C is implemented as set of extensions to

the C language.

y It's designed to give C a full capability for object-oriented programming, and to do so in a simpleand straightforward way.

y Its additions to C are few and are mostly based on

Smalltalk, one of the first object-orientedprogramming languages.

Objective-C 23

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Why Objective Cy Objective-C incorporates C

y You can choose when to do something in an object-

oriented wayy Objective-C is a simple language.

y Objective-C is the most dynamic of the object-orientedlanguages based on C.

y

Most decisions are made at run time

Objective-C 24

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Messagesy message expressions are enclosed in square brackets

[receiver message]

y The receiver is an object. The message is simply thename of a method and any arguments that are passedto it

Objective-C 25

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Foundation Frameworky The Objective-C Foundation Framework is a

essentially set of classes that are provided to speed and

ease the process of developing applications usingObjective-C.

y classes that comprise this framework all begin with theletters "NS (NSString,NSObject,NSDate etc)

y

#import

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String Constanty @This Is a String

y NSString

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NSLogy Used as a print statement.

y Example:NSLog(@HelloWorld);

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Calling Methods in Objective-Cy Other Languages

myObject.someMethod();

In Objective-C:

[myObject someMethod];

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Methods that returns resulty Other Languages

result=myObject.someMethod();

In Objective-C:

result= [myObject someMethod];

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Methods that takes a argumenty Other Languages

myObject.someMethod(arg);

In Objective-C:

[ myObject someMethod : arg];

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Methods that takes multiple

argumenty Other Languages

title.insert(Today Only!,0);

In Objective-C:

[ title insertString:@Today Only! atIndex:0];

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Defining a Classy In Objective-C, classes are defined in two parts:

y An interface that declares the methods and instance

variables of the class .y An implementation that actually defines the class

(contains the code that implements its methods)

Objective-C 33

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The Interface :Student.h#import

@interface Student:NSObject{

//iVarsint rollno;

NSString *name;

}

//public methods

-(void) print;-(void) setRollno : (int ) r;

-(void) setName : (NSString *) n;

@end

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The Implementation:Student.m#import@implementataion Student-(void) print{

NSLog(@Roll No:%i ,Name:%@,rollno,name);}-(void) setRollno : (int) r{

rollno=r;}

-(void) setName: (NSString *n) {name=n;

}@end

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main.m#import import Student.hint main(int argc, const char *argv[]) {

Student *a=[Student new];[a setName: @ATUL ];[a setRollno: 20 ];[a print];

return 0;}

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Declarationy Instance Variablesfloat width;

float height;

BOOL filled;NSColor *fillColor;

yMethods:y names of methods that can be used by class objects,

class methods, are preceded by a plus sign

+ allocy methods that instances of a class can use, instance

methods, are marked with a minus sign:

- (void) display;

Objective-C 43

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Memory Managementy Manage memory for every object you create.

y If you own a object,it is your responsibility to release it.

after the use[object release]

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Sample iPhone

Application

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Open Xcode

Select an already made

application or make a newapplication

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Write code

Make all necessary files &

add all the resources whichwill be needed in yourapplication

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Build & Run Application

Application is loaded into iPhone simulator

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Home page of Application

View Controller of Main Window is opened

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Title view is displayed

View Controller of this view was initialized in previousView Controller

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View Description

Alert view pops up on clicking any row of Table view showing

description of that Topic.

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Technical Aspects OfThis

Application

Four Pillars of anyView Based Application

xib window

Inspector window

Library window

View window

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xib window

Gives description of all the

Outlets and Methodsdeclared in class.

Associated with a particularView Controller class.

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Inspector Window

Properties of any object can be set or changed

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Library window

Objects can be added into view by dragging them from this window

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View window

This is the window where objects are displayed

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Thank You