iStarted- And You Can Too!

A Beginner’s Guide to iOS Programming

Teaser, not a Tutorial

Prerequisites

Think DifferentDress the Same

1. The Uniform

2. The Computer

Mac Mini $599

3. The Developmen

t EnvironmentRegister as a Developer

FREE

Download XCode from Mac App Store FREE

Download Esri iOS SDK FREE

4. The Toys

iPhone 4S $199iPad 2 $499

Developer license* $99/year

5. The Help

iOS Programming: The Big Nerd Ranch Guide (2nd

Ed.) $30.42

Objective-C Programming $22.63

Whitepapers, Tutorials, Videos FREE

$153 - $950(Not Counting the Clothes)

Objective C

Data types

Expressions

Program Control

Preprocessor

Separate header files

Classes

Single inheritance

Dynamic binding

Protocols (“Interfaces”)

Properties

Methods

IAGSLayerView* InsertMapLayer( AGSLayer* mapLayer, String* name, unsigned int index);

result = myMapView->InsertMapLayer( mapLayer, name, index);

Methods in C++

- (UIView<AGSLayerView>*) insertMapLayer: (AGSLayer*) mapLayer withName: (NSString*) name atIndex: (NSUInteger) index;

result = [myMapView insertMapLayer: mapLayer withName: name atIndex: index];

Methods in Objective C

6. Fully-stocked Liquor

CabinetPriceless

[object message];

[object message: argument];

CGColorRef color = [[UIColor darkGrayColor] CGColor];

CGContextSetShadowWithColor(context, offset, 2.0, color);

spulch.blogspot.com/2007/05/weird-animals-created-using-photoshop.html

iOS Development

Memory Management

Model View Controller

Delegates

Program Structure

Memory Management

iOS Uses Reference Counting

alloc creates object with count of 1

retain increments count

release decrements count

dealloc called when count drops to 0

Advantage

Fast and responsive

Disadvantage

It’s hard

malloc( )

free( )

ModelView

Controller

Quick Demo

ModelView

Controller

Models

StringsMap data (not

display)

@”Hello, World”

Views“Window”

Views are

Defined in XIB files

Controllers

EsriMapViewController controls the view that draws this map

GoogleMapViewController controls the view that draws this map

TabBarViewController swaps out other controllers,

whose views fill this space

Delegates

Delegate = Callback

Application Delegate

Root object of an iOS application

Responds to application events

didFinishLaunchingWithOptions

applicationWillTerminate

etc.

AGSMapViewTouchDelegate

Map view sends messages to the view controller

didClickAtPoint

didTapAndHoldAtPoint

Structure of the iStarted

Application

Why Bother?

Learn new and different technologies

Business opportunity

Fun!

One More Thing

One More Thing

// UX designers// QA engineers// Product owners// Developersif ( [you want: aJob] ) { [me contact];}

[you Thanks];

rich.ruh@gmail.com@richruh

[self drink: aMargarita];