so you want to be an iphone developer

October 13th, 2009

Twitter: @appsolutegeniuswww.appsolutegenius.com

Brian Cauble Twitter: @briancauble brian@appsolutegenius.com LinkedIn: www.linkedin.com/in/briancauble

Andria Jensen andria@appsolutegenius.com

Why?

iPhone went from 7% to 23% in last year*

50 million (30 million iPhones, 20 million iPod/Touches)

2 Billion apps downloaded

*The Business Insider

Fun

“People rarely succeed unless they have fun in what they are doing”

Dale Carnegie

Access music library

Play music

Play or record video

Control camera (iPhone)

Integrate with photo library

Google Maps

Give directions

Locate the user

Natural gestures

Pinch & Zoom

Swipe

Detect Movement

Makes innovative games

Control phone

Integrate with Address Book

Send Messages

Badge Numbers

Play Sounds

Share information

Multiplayer games

iPhone or iPod Touch

Intel-based Mac

Apple SDK (it’s big)◦ Registered developer – Free

Simulator only

◦ Individual or company - $99/yr 100 developers

◦ Enterprise - $299/yr Can’t release to app store

Submit apps to App Store

You choose price – Free to $999.99

Apple take 30%

You get paid monthly ($250/region)

Easy way to test apps

Can’t do everything◦ Accelerometer◦ iTunes Library◦ Location services◦ Unrealistic performance

Static Analyzer

Quickly find errors

Message syntax◦ [receiver message]; ◦ [myClass someFunction];

Arguments are indicated by colon◦ [textField setEditable:YES];

Nested Arguments◦ [textField setDoubleValue:[slider doubleValue]];

Object identifiers◦ id anObject;

#import is like an include from C◦ Doesn’t bring in duplicates

@interface ClassName : ItsSuperclass{instance variable declarations

}method declarations@end

Multiple arguments◦ (void)setXLocation:(double)x yLocation:(double)y;

Allocation/Initialization◦ NSString *aString = [[NSString alloc] init];

Memory management◦ Must release anything you alloc

• Ctrl + / - tab between arguments (placeholders) in a function

• Cmd + / - Comment block of code• Cmd + L - Go to line• Cmd + 0 - Brings up document window in IB• Cmd + Shift + E - Toggles the file list• Cmd + Option + Up - toggles between .m and .h• Cmd + Ctrl + Up - Minimizes functions

Good blog◦ www.mobileorchard.com

Apple forums◦ https://devforums.apple.com

Favorite Book

Mockup Tool◦ www.balsamiq.com