Getting Started With iOS Development

 July 7, 2011 –15 billion apps downloaded  425,000 apps in iTunes  100,000 native iPad apps  Apple has paid developers over 2.5 Billion Why Apple? AppAdvice.com,

Requirements?  Mac running Snow Leopard  Register to become an iPhone Developer (  Free  Standard ($99)  Enterprise ($299)  Download SDK from Apple  SDK 3.x free (the one we are using)  SDK 4.x costs $5 from Mac App Store

More Requirements (Standard or Enterprise Developers)  Register for iTunes Connect and agree to Apple’s distribution agreement  Setup Your Team by adding to members and granting administrative privileges  Request certificates for development and later for distribution  Register all iPhones/iPod touches you are using for development  Register application identifiers

Programming Language  Uses C, C++ and Objective C 2.0 programming language  The Objective C 2.0 Programming Language ( on/Cocoa/Conceptual/ObjectiveChttp://developer.apple.com/iphone/library/documentati on/Cocoa/Conceptual/ObjectiveC  Programming in Objective C 2.0 by Kochan  Cocoa Touch application framework

 Started with C in the 1970’s  Subset of C  Small Talk  Objective-C  Licensed by NEXT Software  Bought by Apple in 1996  NEXTSTEP environment used to create Mac OS X  Objective-C native development language of Mac OS and iOS (iPhone, iPod Touch and iPad) Why Objective-C?

iOS Versions  iOS 3.x ( )  iPad  iPhone 2  iPhone 3 and 3S  iOS 4.x (2010 to current)  iPhone 3 will run some of the features  iPhone 3S (with limits) and iPhone 4 will run OS 4.x  iPad 1  iPad 2  iPod Touch  iOS 5 ( ?)  iPhone 3S  iPhone 4  iPad 1  iPad 2  iPod Touch 3G and 4G

What is new in OS 4.x?  Multi-tasking! ….sorta….  Folders to hold your apps  iBooks included  Create playlists on the phone  Wireless keyboard support  And other features…(

What is New in iOS 5?  Notification Center  iMessage  Newsstand  Reminders  Twitter integration  Improved camera  Photo editing  Safari and iCloud  Wi-Fi Sync  Does not require a computer with iTunes

iOS 4 Application Limitations  Only One Active Application. May under certain circumstances have an application running in the background.  Only One Window with a fixed size and location.  Limited Access  Read and write only from your own Sandbox. Sandbox is where you are allowed to store documents, preferences, or other data.  Not able to do Administrative type tasks  Limited Response Time  May have to shut down fast  Must load quickly  Requires a computer with iTunes for software updates

Other iOS App Development Limitations  Limited Screen Size  320 x 480 px for iPhone and iPod Touch  640 x 960 px for Retina devices  1024 x 768 for iPad  Limited System Resources  256 MB or 512 MB of RAM (only half available for an app, rest is OS upkeep)  No swap file, very limited on available memory  Energy usage limits  Using touch and drag, not text and scroll  No garbage collection! Must handle manually  Must deal with user behavior

What’s in the SDK?  Xcode  Source editing  Project management  Documentation  Debugger  Interface Builder  Prototyping tool for designing interfaces  Drag and drop connectivity with underlying code  Simulator  Instruments

Limitations of SDK Simulator  based on Mac frameworks, not iPhone frameworks  missing some hardware features  Accelerometer  Camera  Core location is fixed on Apple headquarters  not able to deal with push notifications or keychain security  does not process audio the same

Know Your Target Device!  Need to know characteristics of each generation of iPhone, iPad and iPod Touch and decide which you are going target when you develop your app.

Overview of iPod Touch, iPhone and iPad Generations  From Wikipedia:

 Apple Developer Resources ( /# navigation/) /# navigation/ Resources

 Beginning iPhone 3 Development: Exploring the iPhone SDK Beginning iPhone 3 Development: Exploring the iPhone SDK By: Dave Mark; Jeff LaMarche Publisher: Apress Publication Date: 15-JUL-2009  Sams Teach Yourself iPhone Application Development in 24 Hours, Second Edition Sams Teach Yourself iPhone Application Development in 24 Hours, Second Edition By: John RayJohn Ray Publisher: Que Publication Date: 15-OCT-2010  Beginning iPad Development for iPhone Developers: Mastering the iPad SDK Beginning iPad Development for iPhone Developers: Mastering the iPad SDK By: Jack Nutting; Dave Wooldridge; David Mark Publisher: Apress Publication Date: 31-JUL-2010 Book Resources—iPhone/iPad Development More iPhone 3 Development: Tackling iPhone SDK 3 More iPhone 3 Development: Tackling iPhone SDK 3 By: Dave Mark; Jeff LaMarche Publisher: Apress Publication Date: 15-JAN-2010 iPhone Programming: The Big Nerd Ranch Guide iPhone Programming: The Big Nerd Ranch Guide By: Joe Conway; Aaron HillegassJoe Conway; Aaron Hillegass Publisher: Big Nerd Ranch Guides Publication Date: 13-APR-2010 iPhone and iPad Apps for Absolute Beginners iPhone and iPad Apps for Absolute Beginners By: Dr. Rory Lewis Publisher: Apress Publication Date: 07-JUN-2010

 App Savvy App Savvy By: Ken YarmoshKen Yarmosh Publisher: O'Reilly Media, Inc. Publication Date: 20-OCT-2010  Tapworthy Tapworthy By: Josh ClarkJosh Clark Publisher: O'Reilly Media, Inc. Publication Date: 18-JUN-2010  Designing the iPhone User Experience: A User-Centered Approach to Sketching and Prototyping iPhone Apps Designing the iPhone User Experience: A User-Centered Approach to Sketching and Prototyping iPhone Apps By: Suzanne GinsburgSuzanne Ginsburg Publisher: Addison-Wesley Professional Publication Date: 12-AUG-2010 Book Resources—iPhone/iPad Design and Business The Business of iPhone App Development: Making and Marketing Apps that Succeed The Business of iPhone App Development: Making and Marketing Apps that Succeed By: Dave Wooldridge; Michael Schneider Publisher: Apress Publication Date: 17-MAR-2010 Designing the Obvious: A Common Sense Approach to Web and Mobile Application Design, Second Edition Designing the Obvious: A Common Sense Approach to Web and Mobile Application Design, Second Edition By: Robert Hoekman Jr.Robert Hoekman Jr. Publisher: New Riders Publication Date: 16-NOV-2010 iPhone® and iPad™ Apps Marketing: Secrets to Selling Your iPhone and iPad Apps iPhone® and iPad™ Apps Marketing: Secrets to Selling Your iPhone and iPad Apps By: Jeffrey HughesJeffrey Hughes Publisher: Que Publication Date: 12-APR-2010

 Programming in Objective-C 2.0, Second Edition Programming in Objective-C 2.0, Second Edition By: Stephen G. Kochan Publisher: Addison-Wesley Professional Publication Date: 29-DEC-2008 Insert Date: 23-AUG-2008  Learn Objective-C on the Mac Learn Objective-C on the Mac By: Mark Dalrymple; Scott Knaster Publisher: Apress Publication Date: 01-JAN-2008  Learning Objective-C 2.0: A Hands-On Guide to Objective-C for Mac and iOS Developers Learning Objective-C 2.0: A Hands-On Guide to Objective-C for Mac and iOS Developers By: Robert ClairRobert Clair Publisher: Addison-Wesley Professional Publication Date: 23-JUL-2010 Book Resources—Objective C Objective-C for Absolute Beginners: iPhone, iPad, and Mac Programming Made Easy Objective-C for Absolute Beginners: iPhone, iPad, and Mac Programming Made Easy By: Gary Bennett; Mitch Fisher; Brad Lees Publisher: Apress Publication Date: 31-AUG-2010 A Beginners guide: Objective-C for iPhone Developers By: James A Brannan Publisher: McGraw Hill Publication Date: 05-May-2010 Objective-C: Visual QuickStart Guide By: Steven HolznerSteven Holzner Publisher: Peachpit Press Publication Date: 17-FEB-2010

 Cocoa Touch™ for iPhone® OS 3 Cocoa Touch™ for iPhone® OS 3 By: Jiva DeVoeJiva DeVoe Publisher: John Wiley & Sons Publication Date: 16-NOV-2009  Cocoa® Programming for Mac® OS X, Third Edition Cocoa® Programming for Mac® OS X, Third Edition By: Aaron Hillegass Publisher: Addison-Wesley Professional Publication Date: 05-MAY-2008  Cocoa Programming: A Quick-Start Guide for Developers By: Daniel H. Steinberg Publisher: The Pragmatic Bookshelf Publication Date:23-April-2010 Book Resources—Cocoa Touch and SDK Learn Xcode Tools for Mac OS X and iPhone Development Learn Xcode Tools for Mac OS X and iPhone Development By: Ian Piper Publisher: Apress Publication Date: 30-DEC-2009 Xcode 3 Unleashed By: Fritz Anderson Publisher: Sams Publication Date: 17-JUL-2008

 iTunes for iPhone, iPod and iPad Apps  By popular  By category  By release date  Free vs paid apps  Mac App Store Navigating the App Stores