I phone app develoment ppt

iPhone App development -
SKILLSCHOOL.co.in

So what is all the fuss about?
Touchscreen interface, with several patents
Visual voicemail
Full MacOSX instead of subset (half a Gb)
Webbrowsing with most advanced
webbrowser to date on handheld device
(Safari)
Synchronisation via ITunes => demo

Features
Screen size: 3.5 in (89 mm)
Screen resolution: 480×320 pixels at 163 ppi, with 3:2 aspect ratio
Input devices: Multi-touch screen interface plus a "Home" button and
"Sleep/Wake" located on the top of the iPhone.
Built-in rechargeable, non-removable battery
2 megapixel camera
Location finding by detection of cell towers and Wi-Fi networks
Samsung S5L8900 (412 MHz ARM 1176 processor, PowerVR MBX 3D
graphics co-processor)
Memory: 128 MB DRAM
Storage: 8 GB or 16 GB flash memory
Operating System: iPhone OS
Quad band GSM / GPRS / EDGE: GSM 850 / 900 / 1800 / 1900
Wi-Fi (802.11b/g)
Bluetooth 2.0 with EDR
20Hz to 20kHz frequency response (both internal and headset)

Features new generation
Color: Black (8 GB or 16 GB) or white (16 GB)
Size: 4.5 inches (115.5 mm) (h) × 2.4 inches (62.1 mm) (w) × 0.48 inch (12.3
mm) (d)
Weight: 133 g
Headphone jack (non-recessed)
Battery has up to 10 hours of 2G talk, 5 hours of 3G talk, 5 (3G) or 6 (Wi-Fi)
hours of Internet use, 7 hours of video playback, and up to 24 hours of audio
playback, lasting over 300 hours on standby.
3G for broadband data speeds
Assisted GPS
Digital SAR Rating: 1.38 W/kg

Popularity
iPhone Stats
October, 2008
10 Million iPhones
App store stats
July, 2008 (launch) : 552 Apps
December 5, 2008 : 300M downloads
February, 2009 : 20.000 Apps / 500M downloads

Openness
Closed source with open source components.
Given Apple’s history, this is likely to stay this way.
(Benevolent) Vertically Integrated Dictatorship
vs.
Open Source, Loosely-Controlled Ecosystem
Open Source NO YES
Write anything you want NO YES
Device Homogeneity YES NO
iPhone Android

Where to start?
http://developer.apple.com/iphone/
Download iPhone SDK, if you are a Registered iPhone Developer or enrolled
in the iPhone Developer Program
SDK includes :
Xcode
IPhone simulator
Monitoring instruments
Interface builder
• loading an application onto devices is only possible after paying a Apple
Developer Connection membership fee of 99 $ (standard) or 299 $
(enterprise)
• => XCode demo : UDecide

Web apps
• http://www.apple.com/webapps/
http://www.shockwise.com/iphone/draw.ph
p
Developers are free to set any price for their
applications to be distributed through the
App Store, of which they will receive a 70
percent share
• Developers can also opt to release the
application for free and will not pay any
costs to release or distribute the application
beyond the membership fee

Web Apps
Applications are downloaded directly to iPhone or
iPod Touch
App Store is also available within iTunes
Applications are subject to approval by Apple, as
outlined in the SDK agreement, for basic reliability
testing and other analysis
Applications may be rejected if they are of only
"limited utility"
Toolbars must be placed at the bottom of the screen,
and the vibration function should only be used for
alerts

How do we develop Apps for the iPhone?
We can use Xcode / Objective C
We can develop AJAX / Javascript applications that can be
accessed through Safari
We can use Java
AlcheMo for iPhone
Xmlvm
We can install Java on an unlocked and Jailbroken iPhone

Objective C
1980S : Objective-C language designed by
Brad J. Cox:
–Object-oriented extension of C. Inspired by Smalltalk.
–Strict superset of C.
1988 : NeXT Software licenses the Objective-C language and
develops NEXTSTEP
1992 : FSF adds Objective-C to GNU compiler suite
1994 : NeXT Computer and Sun Microsystems release a
standardized OPENSTEP specification
1996 : Apple acquires NeXT Software. Use for OS X.
OPENSTEP now called Cocoa.

Objective C
Interface (.h)
#import <Foundation/NSObject.h>
@interface Fraction: NSObject{
intnumerator;
intdenominator;
}-(void) print;
-(void)setNumerator: (int) d;
-(void)setDenominator: (int) d;
-(int) numerator;
-(int) denomin@end

Objective C
Implementation (.m)
#import "Fraction.h“
#import <stdio.h>
@implementation Fraction
-(void) print
{ printf("%i/%i", numerator,
denominator); }
-(void) setNumerator: (int) n
{ numerator = n; }
-(void) setDenominator: (int) d
{ denominator = d; }
-(int) denominator
{ return denominator; }
-(int) numerator
{ return numerator; }@end

AJAX & JavaScript
AJAX (Asynchronous JavaScript and XML) : a group of interrelated
web development techniques used to create interactive web
applications or rich Internet applications. With Ajax, web
applications can retrieve data from the server asynchronously in
the background without interfering with the display and behavior of
the existing page. Despite the name, the use of JavaScript and
XML is not actually required, nor do the requests need to be
asynchronous. The acronym AJAX has thus changed to the term
Ajax, which does not represent these specific technologies.
Applets were the precursors of AJAX
With iPhone Safari browser, very rich and native looking Apps are
possible

AJAX & JavaScript
AJAX plugin for eclipse or standalone version : http://www.aptana.com/
Morfik also has an IDE : http://www.morfik.com/#Home
ASP.NET AJAX is supported : http://steveorr.net/articles/iPhone.aspx
Native look and feel screen controls : IUI. Based on the work of Joe
Hewitt who developed the free Facebook iPhone App.
• http://code.google.com/p/iui/
• Create Navigational Menus and iPhone interfaces from standard
HTML
• Use or knowledge of JavaScript is not required to create basic
iPhone pages
• Ability to handle phone orientation changes
• Provide a more "iPhone-like" experience to Web apps (on or off
the iPhone)

AJAX & JavaScript
The canvas element is a third party extension that allows for dynamic
rendering of scriptable bitmap images. It was initially introduced by
Apple or use inside their own Mac OS X Webkit component,
powering applications like Dashboard widgets and the Safari
browser. Later, it was adopted by Gecko browsers (notably Mozilla
and Firefox) and standardized by the WHATWG on new proposed
specifications for next generation web technologies. Support is also
present in the Opera 9.0 browser.
Canvas consists of a drawable region defined in HTML code with
height and width attributes. JavaScript code may access the area
through a full set of drawing functions similar to other common 2D
APIs, thus allowing for dynamically generated graphics. Some
anticipated uses of the canvas include building graphs, animations,
and image composition.
No need for flash anymore!

AJAX & JavaScript
Demo based on http://www.damonkohler.com/2008/12/javascript-painting-
with-canvas.html

AJAX & JavaScript
Demo based on http://www.benjoffe.com/code/demos/canvascape/

AlcheMo for iPhone
http://www.innaworks.com/alcheMo-for-iPhone.html
alcheMo for iPhone is capable of converting J2ME applications
utilizing an extensive subset of Java ME CLDC 1.1
(http://java.sun.com/products/cldc/) and MIDP 2.0 (including touch
screen support) and supports several JSR extension APIs
(http://jcp.org/en/jsr/detail?id=198) including the JSR-256 mobile
sensor API. Additional APIs support multi-touch and native iPhone
look and feel. This automatic translation process is instantaneous,
repeatable, and available 24/7 while requiring no iPhone specific
experience.

(real) Java on the iPhone
No official support
It is however possible to run Java on the iPhone
We have to pull some tricks, jailbreaking, installing...
Apple has stated it will not design software updates specifically to
break native applications other than applications that perform SIM
unlocking

Unlocking & Jailbreaking
Jailbreaking is distinct from "unlocking". Unlocking is the process by which a
mobile device is made compatible with telephone networks it was not
specifically licensed to be used with.
A jailbreak is the act of breaking out of a jail in UNIX-like operating systems
or bypassing digital rights management (DRM). It is a specific form of
privilege escalation. In the context of the iPhone, it allows the user to run
arbitrarily defined code or applications, bypassing Apple's code distribution
mechanism (the iTunes App Store and the iTunes Application).
Tools :
PwnageTool, from the iPhone Dev Team (http://blog.iphone-dev.org/)
QuickPwn, from the iPhone Dev Team (http://blog.iphone-dev.org/)
Yellowsn0w, redsn0w (http://blog.iphone-dev.org/)
Pusher, from RiP Dev (http://ripdev.com/pusher/)
Linux on iPhone (http://www.iphonelinux.org/index.php/Main_Page)
ZIPhone (http://www.ziphone.org/)

IPhone in Finder
• Install AFP (Apple Filing Protocol) on your iPhone
• Get your iPhone's IP address
• Connect to server from MacOSX Finder
• afp://ip-address-of-your-iphone
• User : 'root' / pwd : 'alpine'

Cydia
Cydia is a package manager for installing unofficial
3rd-party applications on the iPhone
Among other things, this allows iPhone users to
bypass Apple's restrictions on certain kinds of
applications, such as launchers, custom wallpapers
(themes) and battery status apps
The applications are downloaded directly to iPhone
or iPod Touch and are located in the /Applications/
directory , in the same place where 'Apple' native
applications are located. App Store applications
are located in /var/mobile/Applications/
Cydia is a front end/graphical interface for a port of
APT created by Jay Freeman
Cydia allows users to add custom sources, so
people can choose where to download software
from

Installer
Installer is another package installer,
created and maintained by the Russian
Rip-Dev company alongside other tools.
The former maintainer of Installer, on pre
2.0 firmwares, was Nullriver, Inc.

(real) Java on the iPhone
Run Cydia Installer, go to Java section and select iPhone/Java which will
install the virtual machine, libraries etc. Then install Jikes (java compiler).
Also, install Terminal. Now restart iPhone.
You can upload Java files to iPhone using iPhone Browser => demo
Run Terminal (installed above) and use java (jikes) compiler to compile your
program. For example:
jikes -cp /usr/lib/rt.jar MyFirstJavaProgramForIPhone.java
You can run the class file as usual:
java MyFirstJavaProgramForIPhone

XMLVM
http://www.xmlvm.org/overview/
XMLVM translates a Java class file (or a .NET executable) to an XML-
document. This allows manipulation and translation of XMLVM-based
programs using advanced XML technologies such as XSLT, XQuery, and
XPath.
Based on the XML-document generated by the front-end, various
transformations are possible :
Cross-compilation from .NET to JVM byte code
Java or .NET applications to JavaScript so that they can run as AJAX
applications in any browser
Cross-compilation of Java programs to Objective-C to create native
iPhone applications
Cross-compilation of Android applications to run on the iPhone

HelloWorld in Java
i mport org.xmlvm.iphone.*;
publ i c cl ass HelloWorld ext endsUIApplication
{
publ i c voi dapplicationDidFinishLaunching(NSNotification n)
{
CGRect rect = UIHardware.fullScreenApplicationContentRect();
UIWindow window = newUIWindow(rect);
window.orderFront(t hi s);
window.makeKey(t hi s);
window._setHidden(f al se);
rect.origin.x = rect.origin.y = 0;
UIView mainView= newUIView(rect);
window.setContentView(mainView);
UITextLabel _title = newUITextLabel(rect);
_title.setText("Hello World!");
_title.setCentersHorizontally(t rue);
mainView.addSubview(_title);
}
}

HelloWorld in Objective C
@interface helloWorld : UIApplication
-(void) applicationDidFinishLaunching: (NSNotification) n;
@end
@implementation helloWorld
-(void) applicationDidFinishLaunching: (NSNotification) n
{CGRect rect = [UIHardware fullScreenApplicationContentRect];
UIWindow* window = [[UIWindow alloc]initWithContentRect: rect];
[window orderFront: self];
[window makeKey: self];
[window _setHidden: false];
rect.origin.x = rect.origin.y = 0;
UIView* mainView = [[UIView alloc] initWithFrame: rect];
[window setContentView: mainView];
UITextLabel *_title = [[UITextLabel alloc]initWithFrame: rect];
[_title setText: @"Hello World!"];
[_title setCentersHorizontally: true];
[mainView addSubview: _title];
}@end

Crosscompiling HelloWorld.java to Objective-C
The cross-compiler is in source folder src/xmlvmclass
org.xmlvm.Main
To generate the XMLVM for “Hello World” use the following
command line options (under Eclipse):
--console
${workspace_loc:xmlvm}/bin/org/xmlvm/test/iphone/
HelloWorld.class
To cross-compile the XMLVM to Objective-C use:
--console --objc
HelloWorld.class
To write the Objective-C source code to a file, use:
--out=tmp --objc
HelloWorld.class
The previous command will generate two files:
–${workspace_loc:xmlvm}/tmp/HelloWorld.h
–${workspace_loc:xmlvm}/tmp/HelloWorld.m

Compile and run HelloWorld
Type “make” in ${workspace_loc:xmlvm}/tmp
Type “make deploy”
On the iPhone, type “killall SpringBoard” . The previous command can
be accomplished by either ssh-ing (secure shell) into the iPhone, or by
using a terminal application on the iPhone. Restarting the SpringBoard
is necessary only once so that it picks up the new “Hello World”
application.

I phone app develoment ppt

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I phone app develoment ppt