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Getting StartedWith 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, http://appadvice.com/appnn/2011/07/apple-15-billion-apps-downloaded-and-counting
Requirements?
Mac running Snow Leopard Register to become an iPhone Developer (
http://developer.apple.com/iphone 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 (
http://developer.apple.com/iphone/library/documentation/Cocoa/Conceptual/ObjectiveC
Programming in Objective C 2.0 by Kochan Cocoa Touch application framework
Started with C in the 1970’s Subset of CSmall TalkObjective-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 (2009-2010) 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 (2011 - ?) iPhone 3S iPhone 4 iPad 1 iPad 2 iPod Touch 3G and
4G
http://en.wikipedia.org/wiki/IOS_version_history
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…(www.apple.com/iphone/softwareupdate)
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:http://en.wikipedia.org/wiki/List_of_iOS_devices
Apple Developer Resources (http://developer.apple.com/library/ios/#navigation/)
Resources
Beginning iPhone 3 Development: Exploring the iPhone SDK
By: Dave Mark; Jeff LaMarchePublisher: ApressPublication Date: 15-JUL-2009
Sams Teach Yourself iPhone Application Development in 24 Hours, Second Edition
By: John RayPublisher: QuePublication Date: 15-OCT-2010
Beginning iPad Development for iPhone Developers: Mastering the iPad SDK
By: Jack Nutting; Dave Wooldridge; David MarkPublisher: ApressPublication Date: 31-JUL-2010
Book Resources—iPhone/iPad Development
• More iPhone 3 Development: Tackling iPhone SDK 3By: Dave Mark; Jeff LaMarchePublisher: ApressPublication Date: 15-JAN-2010
• iPhone Programming: The Big Nerd Ranch GuideBy: Joe Conway; Aaron HillegassPublisher: Big Nerd Ranch GuidesPublication Date: 13-APR-2010
• iPhone and iPad Apps for Absolute BeginnersBy: Dr. Rory LewisPublisher: ApressPublication Date: 07-JUN-2010
App SavvyBy: Ken YarmoshPublisher: O'Reilly Media, Inc.Publication Date: 20-OCT-2010
TapworthyBy: Josh ClarkPublisher: O'Reilly Media, Inc.Publication Date: 18-JUN-2010
Designing the iPhone User Experience: A User-Centered Approach to Sketching and Prototyping iPhone Apps
By: Suzanne GinsburgPublisher: Addison-Wesley ProfessionalPublication Date: 12-AUG-2010
Book Resources—iPhone/iPad Design and Business
• The Business of iPhone App Development: Making and Marketing Apps that SucceedBy: Dave Wooldridge; Michael SchneiderPublisher: ApressPublication Date: 17-MAR-2010
• Designing the Obvious: A Common Sense Approach to Web and Mobile Application Design, Second EditionBy: Robert Hoekman Jr.Publisher: New RidersPublication Date: 16-NOV-2010
• iPhone® and iPad™ Apps Marketing: Secrets to Selling Your iPhone and iPad AppsBy: Jeffrey HughesPublisher: QuePublication Date: 12-APR-2010
Programming in Objective-C 2.0, Second Edition
By: Stephen G. KochanPublisher: Addison-Wesley ProfessionalPublication Date: 29-DEC-2008Insert Date: 23-AUG-2008
Learn Objective-C on the MacBy: Mark Dalrymple; Scott KnasterPublisher: ApressPublication Date: 01-JAN-2008
Learning Objective-C 2.0: A Hands-On Guide to Objective-C for Mac and iOS Developers
By: Robert ClairPublisher: Addison-Wesley ProfessionalPublication Date: 23-JUL-2010
Book Resources—Objective C
• Objective-C for Absolute Beginners: iPhone, iPad, and Mac Programming Made EasyBy: Gary Bennett; Mitch Fisher; Brad LeesPublisher: ApressPublication Date: 31-AUG-2010
• A Beginners guide: Objective-C for iPhone DevelopersBy: James A BrannanPublisher: McGraw HillPublication Date: 05-May-2010
• Objective-C: Visual QuickStart GuideBy: Steven HolznerPublisher: Peachpit PressPublication Date: 17-FEB-2010
Cocoa Touch™ for iPhone® OS 3By: Jiva DeVoePublisher: John Wiley & SonsPublication Date: 16-NOV-2009
Cocoa® Programming for Mac® OS X, Third Edition
By: Aaron HillegassPublisher: Addison-Wesley ProfessionalPublication Date: 05-MAY-2008
Cocoa Programming: A Quick-Start Guide for Developers
By: Daniel H. SteinbergPublisher: The Pragmatic BookshelfPublication Date:23-April-2010
Book Resources—Cocoa Touch and SDK
• Learn Xcode Tools for Mac OS X and iPhone DevelopmentBy: Ian PiperPublisher: ApressPublication Date: 30-DEC-2009
• Xcode 3 UnleashedBy: Fritz AndersonPublisher: SamsPublication 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
