1 Going Mobile with iOS

So,you want to build an iOS app

'cause everyone wants one!

Apps live in an iTunes universe

Time to make a decision

It all starts with the iPhone SDK

Take alook around

Xcode includes app templates to help you get started

Xcode is a full-featured IDE

Xcode is the hub of your iOS project

Build your interface within Xcode

Add the button to your view

The iOS simulator lets you test your app on your Mac

iDecide's logic

Changing the button text

You're using the Model View Controller pattern

iDecide is actually a little simpler

What happened?

Use the GUI editor to connect UI controls to code

A component can trigger certain events

Connect your events to methods

You've built your first iPhone app!

Your iOS Toolbox

2 Hello,Renee!

First we need to figure out what Mike(really)wants

App design rules—the iOS HIG

HIG guidelines for pickers and buttons

Create a new View-based project for InstaEmail

The life of a root view

We need data

Use pickers when you want controlled input

Pickers get their data from a datasource

That pattern is back

First,declare that the controller conforms to both protocols

The datasource protocol has two required methods

Connect the datasource just like actions and outlets

There's just one method for the delegate protocol

Actions,outlets,and events

Connect the event to the action

Next,synthesize the property

Connect the picker to our outlet

Use your picker reference to pull the selected values

Your iOS Toolbox

3 Email needs variety

Renee is catching on

Make room for custom input

Header files describe the interface to your class

Auto-generated accessors also handle memory management

To keep your memory straight,you need to remember just two things

But when Mike's finished typing

Customize your UITextField

Components that use the keyboard ask it to appear

Ask the UITextField to give up focus

Messages in Objective-C use named arguments

Use message passing to tell our View Controller when the Done button is pressed

Where's the custom note?

Your Objective-C Toolbox

4 A table with a view

So,how do these views fit together?

The navigation template pulls multiple views together

The table view is built in

A table is a collection of cells

Just a few more drinks

Plists are an easy way to save and load data

Arrays(and more)have built-in support for plists

Use a detail view to drill down into data

A closer look at the detail view

Use the Navigation Controller to switch between views

Navigation Controllers maintain a stack of View Controllers

Dictionaries store information as key-value pairs

Debugging—the dark side of iOS development

First stop on your debugging adventure:the console

Interact with your application while it's running

Xcode supports you after your app breaks,too

The Xcode debugger shows you the state of your application

Your iOS Toolbox

5 Refining your app

It all started with Sam

Use the debugger to investigate the crash

Update your code to handle a plist of dictionaries

The Detail View needs data

The other keys are key

We have a usabilitv problem

Use a disclosure button to show there are more details available

Sales were going strong

Use Navigation Controller buttons to add drinks

The button should create a new view

We need a view&but not necessarily a new view

The View Controller defines the behavior for the view

A nib file contains the UI components and connections

You can subclass and extend View controllers like any other class

Modal views focus the user on the task at hand

Any view can present a modal view

Our modal view doesn't have a navigation bar

Create the Save and Cancel buttons

Write the Save and Cancel actions

Your iOS Toolbox

6 Everyone's an editor...

Sam is ready to add a Red-Headed School Girl

but the keyboard is in the way

Wrap your content in a scroll view

The scroll view is the same size as the screen

The keyboard changes the visible area

iOS notifies you about the keyboard

Register with the default notification center for events

Keyboard events tell you the keyboard state and size

The table view doesn't know its data has changed

The array is out of order,too

Table views have built-in support for editing and deleting

Your iOS Development Toolbox

Sam has another project in mind

7 We need more room

DrinkMixer on the iPad

The iPad simulator

The HIG covers iPads,too

Use Xcode to build your Universal app

Check your devices

Rotation is key with iPad

A persistent view problem

Don't forget the tableview

Your iOS Development Toolbox

8 Enterprise apps

HF bounty hunting

A new iPhone control

Choose a template to start iBountyHunter

There's a different structure for universal apps

Drawing how iBountyHunter iPhone works

and how it fits with the universal app

Build the fugitive list view

Next up:the Captured view

A view's contents are actually subviews

After a quick meeting with Bob

Core Data lets you focus on your app

Core Data needs to know what to load

Core Data describes entities with a Managed Object Model

Build your Fugitive entity

Use an NSFetchRequest to describe your search

Bob's database is a resource

Back to the Core Data stack

The template sets things up for a SQLite DB

iOS Apps are read-only

The iPhone's application structure defines where you can read and write

Copy the database to the Documents directory

Your Core Data Toolbox

9 Things are changing

Bob needs documentation

Everything stems from our object model

The data hasn't been updated

Data migration is a common problem

Migrate the old data into the new model

Xcode makes it easy to version your data model

Core Data can“lightly”migrate data

Here's what you've done so far

Bob has some design input

Your app has a lifecycle all its own

Multitasking rules of engagement

A quick demo with Bob

Use predicates for filtering data

We need to set a predicate on our NSFetchRequest

Core Data controller classes provide efficient results handling

Time for some high-efficiency streamlining

Create the new FetchedResultsController getter method

We need to refresh the data

Your Data Toolbox

10 Proof in the real world

For Bob,payment requires proof

The way to the camera

There's a method for checking

Prompt the user with action sheets

Bob needs the where,in addition to the when

Core Location can find you in a few ways

Add a new framework

Just latitude and longitude won't work for Bob

Map Kit comes with iOS

A little custom setup for the map

Annotations require a little more work

Fully implement the annotation protocol

Your Location Toolbox

11 Natural interfaces

Bob needs that iPad app,too

iOS HIG user experience guidelines

Iterate your interface,too

BountyHunterHD is based on a split-view controller

Unifying the custom stuff

It seems we have a problem

UIWebview has lots of options

HTML,CSS and Objective-C

Using UIWebView

Your NUI Toolbox

i The top 4 things(we didn't cover)

#1．Internationalization and Localization

Localizing string resources

#2．View animations

#3．Accelerometer

Understanding device acceleration

#4．A word or two about gaming

Quartz and OpenGL

ii Get ready for the App Store

Apple has rules

The Provisioning Profile pulls it all together

Keep track in the Organizer