iPhone Development

Zero to Sixty

Tom Swift1821 Design

Who the hell am I?

• iPhone Developer: Thomas Swift• Owner of 1821 Design

• http://1821design.com

• Rails Developer & Web Designer• http://twitter.com/tmy - add me

• or don't (i swear a lot)

Why iPhone Development?

• The iPhone kicks ass• 3G and GPS• Powerful• OpenGL ES

• Mac Development• Xcode & Objective-C • App Store

• One Stop Shop• Easy For Users• Great For Developers *

Getting Started• What you need

• iPhone Developer Account• Newest Xcode• Intel Machine :(

• What you (really) need• iPhone or iPod Touch• Developer Certificate• Patience or some sort of mechanism to cope

Learning Objective-C or: How I Learned to Stop Worrying and Love the Bracket

Objective-CThings that threw me for a loop• Bracket Madness

• Method Calling• [object method:param] instead of object.method(param)

• Plus and Minus in front of method calls• Going back to two files .m and .h• Pointers and Memory Management • Extremely long names of things

• UIBarButtonItem *buttonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(toggleView)];

• Get Over It• I’m sure I forgot something

Where I startedApple Sample Code

• Apple Sample Code is like an old BMW M5

Which M5 - E60 M5 ?

Which M5 – E36 M5?

Nope: the E34 M5

Why is Apple Sample code like a old BMW M5?

• Hand built by Single Person or a small team• Test Drivers were able to tell who built them• Each had own individual style to match objective• Pretty badass and very relevant• They get the job done • A Little Old – except a few

Good Apple Samples• LocateMe

• CoreLocation• Delegates

• SpeakHere• AudioToolbox• AudioQueue

• AccelerometerGraph• SeismicXML

• Pulling from the web• Reachability

• Wifi, Cell Network • Many More

Learning From Them• Remove the 50 pages of comments from each file• Start from the top

• main.m• <APP>AppDelegate.h .m

Xcode is slick• Research Assistant• Code completion

• press esc• Breakpoints & GDB• Documentation• Code Folding• Instruments

A few tips• An Error is an Error• A Warning is an Error - Fix it

• When you alloc init something release it when your done with it

• Link to frameworks inside the iPhone SDK Frameworks, sometime you’ll get funky build errors• Speaking of building• ABB – Always Be Building

Simulators are no fun *Except for SimCity

• It’s a little faster to compile it to the simulator• You can test out your didReceiveMemoryWarning (a little harder on the device)

Taste The Real Thing

• Accelerometer• GPS• Microphone *• Real Memory Space• Testing Hand Interaction (that sounds sick)

• Left Handed, Right Handed• Screen Orientation• Keyboard Flow

• Oh crap! Phone Call• No WIFI, No Cell Signal

Developer Certificate

Getting that app on the Device

• Program Portal• http://developer.apple.com/iphone/manage/overview/index.action

• Generate on keys the machine• Upload to Apple• Setup a Provision Profile• Download the Profile• Install in Xcode• Send app to device

Program Portal

Team

Certificates

Devices

App IDs

Struggle

Provisioning Profile

Installing Provisioning Profile

• Download and Drag to Xcode• Xcode should be open

• When things get jacked up• Restart Xcode• remove profiles

• delete from ~/Library/MobileDevice/Provisioning Profiles

• drag the downloaded one to Xcode again• restart xcode for good measure

• tweet about stabbing your eyes out

Build?• Not Yet – Error 0xE8000001• Change Build Settings and info.plist

2nd Most Important Slide

Right Click Blue IconGet InfoClick on Build Tab

Build Settings

YES!!!

Where to turn to when the S hits the fan?(before fnda lifted)

• Apple Docs• Cocoa Dev Wiki • The Googles• http://www.iphonedevsdk.com/forum• IRC #iphonedev on freenode • Apple Dev Mail list• Existing Source Code

• Wordpress iPhone Code

* App Store• First off, It’s awesome

• But,• REVIEWS • Loose Guidelines• NDA’d Rejections• Sea of pointless apps *• No Trials• Cheap People

Don’t Take My Word for it• I am not an expert• I have no apps on the store• Based on personal experience• Your results WILL vary• Not Covered

• Distribution and Ad-Hoc

Enough Blab Let’s build something!

Thomas Swift1821 Design

Slides: http://www.slideshare.net/1821Design/