So you want to be an iPhone developer

October 13 th , 2009

Twitter: @appsolutegenius www.appsolutegenius.com

Brian Cauble
Twitter: @briancauble
[email_address]
LinkedIn: www.linkedin.com/in/briancauble
Andria Jensen
[email_address]

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

“ 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

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So you want to be an iPhone developer

by bcauble on Nov 14, 2009

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So you want to be an iPhone developer — Presentation Transcript