Iphone os dev sharing with new examples

iPhone OS Apps Development the basics (again)

Smartphone Sales 09 - 172m Competitive Landscape: Mobile Devices Worldwide, 4Q09 and 2009, Gartner

Smartphone Sales 09 - 172m Symbian 80,878 47% RIM 34,346 20% iPhone OS 24,889 14% Windows Mobile 15,027 9% Linux 8,126 5% Android 6,798 4% Others 1,305 1% Competitive Landscape: Mobile Devices Worldwide, 4Q09 and 2009, Gartner

140,000 Apps 58m Users 28,000 Developers 4.8 apps downloaded per user (dec) since july 08 $4.37 per user per month 280m apps downloaded (dec 09) 3,000,000,000+ dls

What Developers Need to Know

Device/Platform Limitations

Device/Platform Limitations One App at a Time

Device/Platform Limitations One App at a Time One Screen at a Time

Device/Platform Limitations One App at a Time One Screen at a Time Limited Access

Device/Platform Limitations One App at a Time One Screen at a Time Limited Access Limited Memory (128/256MB)

Device/Platform Limitations One App at a Time One Screen at a Time Limited Access Limited Memory (128/256MB) Compact Screen Size

Device/Platform Limitations One App at a Time One Screen at a Time Limited Access Limited Memory (128/256MB) Compact Screen Size Limited Control

Metaphors model your application’s objects and actions on objects and actions in the real world

Aesthetic Integrity A measure of how well the appearance of your application integrates with its functions

Focus on Primary Task

Focus on Primary Task Make it Obvious

Focus on Primary Task Make it Obvious Minimize Input

Focus on Primary Task Make it Obvious Minimize Input Minimize Choices

Focus on Primary Task Make it Obvious Minimize Input Minimize Choices Immediate Feedback

iPhone OS & SDK

iPhone OS & SDK A Stack of Frameworks, High to Low

iPhone OS & SDK

iPhone OS & SDK UIKit Address Book UI copy & paste, UI controls, touch & motion handling, graphics & windowing, app management, foundation, accelerometers stats, camera control, photo library, Push Notiﬁcations sensors stats... Game Kit Message UI Map Kit

iPhone OS & SDK

iPhone OS & SDK Quartz (2d vector) Core Audio Core Animation OpenAL OpenGL ES Media Player Framework

iPhone OS & SDK

iPhone OS & SDK Core Data Store Kit Core Foundation SQLite Core Location XML Support

iPhone OS & SDK

iPhone OS & SDK CFNetwork Accessory Support Security Threading File Access Memory Management

UI components and Frameworks Navigation/Tool Bars, Tab Bars, iPod library Network Connectivity

UI components and Frameworks TableViews, Core Data, sqlite

UI components and Frameworks Text Views, Emails, Mapkit, GPS Network Connectivity

Rolling your own UI components?

The SDK

Interface Builder

Instruments & Shark

Objective-C Founded in 86, licensed by NeXT in 88 Superset of C with OO features Polymorphism, inheritance, class, interface

send messages to object instances to call a method Properties and Synthesize

Memory Management Cocoa relies on reference counting No automatic Garbage Collection on iPhone OS

First App

First App A UIWindow with a UILabel, without Interface Builder

First App Fire up Xcode

First App Initiates your app in the App Delegate class

AppDelegate.m

AppDelegate.m “Don’t Call Me, I’ll Call You.” the iPhone OS is in control of our app

Second App

Second App A UIWindow with two UIImages: one local, one web

Second App Same gig, different acts

Third App

Third App Introducing ViewControllers and Animation

Third App Orientation Changes + Motion Detection + Animation

Third App App Delegate class made simple

Third App Display logic in View Controller class

Third App Handling Orientation Changes in View Controller class

Third App Shufﬂe Images upon Shake in View Controller class

Fourth App: a simple game UIButtons + NSTimer + Animation

Count Up Timer Life Meter Player Guard Buttons

Life Meter GameAppDelegate Player (void)applicationDidFinishLaunching: (UIApp*)app LifeMeter Convict : UIImageView UILabel *lifeLabel; NSInteger horizontalPosition; UIImageView *life1SymbolImageView; UIImage *convictImage; UIImageView *life2SymbolImageView; BOOL isBeingHit; UIImageView *life3SymbolImageView; NSTimer *paralyzedTimer; UIImageView *life4SymbolImageView; - (void) startCrawling; UIImageView *life5SymbolImageView; - (void) gotHit; NSInteger numberOfLivesLeft; - (void) goDie; - (id) initWithFrame:(CGRect)aRect; - (void) reduceLifeMeterByOne; - (void) recoveredFromHit:(NSString *)animationID - (void) reduceLifeMeterByOneAnimationDone: finished:(NSNumber *) finished context:(void *) (NSString *)animationID finished:(NSNumber *) context; finished context:(void *) context; GameViewController UIImageView *bottomPanel UIButton *firstButton UIButton *secondButton UIButton *thirdButton Convict *convict Guard *guard Buttons LifeMeter *lifeMeter Guard TimerClock *timerClockView - (void) initControls - (void) initConvict Guard TimerClock - (void) initGuard UILabel *clockLabel UIImage *guardImage NSDate* currentDate UIImageView *nozzleFireImageView CGFloat secondsElapsed UILabel *nowLoadingLabel NSTimer *updateLabelTimer BOOL gunIsAiming -(void)updateLabel: (NSTimer*) updateLabelTimer BOOL gunIsFiring -(void)stopTimer; BOOL isFinalShot NSTimer *startsAimingTimer NSTimer *startsReloadingTimer CFURLRef soundFileURLRef SystemSoundID soundFileObject Count Up Timer - (id) init; - (void) startsAiming; - (void) startsReloading; - (void) startsFiring; - (void) finalShot; - (void) restNow; - (void) firingStopped:(NSString *)animationID finished:(NSNumber *) finished context:(void *) context;

GameViewController Guard UIImage *guardImage UIImageView *bottomPanel UIImageView *nozzleFireImageView UIButton *firstButton UILabel *nowLoadingLabel UIButton *secondButton BOOL gunIsAiming BOOL gunIsFiring UIButton *thirdButton BOOL isFinalShot Convict *convict NSTimer *startsAimingTimer Guard *guard NSTimer *startsReloadingTimer LifeMeter *lifeMeter CFURLRef soundFileURLRef SystemSoundID soundFileObject TimerClock *timerClockView - (id) init; - (void) initControls - (void) startsAiming; - (void) initConvict - (void) startsReloading; - (void) initGuard - (void) startsFiring; - (void) finalShot; - (void) restNow; - (void) firingStopped:(NSString *)animationID finished:(NSNumber *) finished context:(void *) context;

GameViewController Convict : UIImageView UIImageView *bottomPanel NSInteger horizontalPosition; UIButton *firstButton UIImage *convictImage; UIButton *secondButton BOOL isBeingHit; UIButton *thirdButton NSTimer *paralyzedTimer; Convict *convict - (void) startCrawling; Guard *guard - (void) gotHit; LifeMeter *lifeMeter - (void) goDie; TimerClock *timerClockView - (id) initWithFrame:(CGRect)aRect; - (void) initControls - (void) recoveredFromHit:(NSString *)animationID - (void) initConvict finished:(NSNumber *) finished context:(void *) - (void) initGuard context;

Guard UIImage *guardImage UIImageView *nozzleFireImageView UILabel *nowLoadingLabel BOOL gunIsAiming BOOL gunIsFiring BOOL isFinalShot NSTimer *startsAimingTimer NSTimer *startsReloadingTimer CFURLRef soundFileURLRef SystemSoundID soundFileObject - (id) init; - (void) startsAiming; - (void) startsReloading; - (void) startsFiring; - (void) finalShot; - (void) restNow; - (void) firingStopped:(NSString *)animationID finished:(NSNumber *) finished context:(void *) context;

Closing Thoughts...

questions?

Iphone os dev sharing with new examples

by kenshin03 on Mar 11, 2010

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