Head First iPhone Development

Name: Head First iPhone Development | A Learner's Guide to Creating Objective-C Applications for the iPhone
Brand: O'Reilly
Price: 37.49 EUR
Availability: OnlineOnly

A Learner's Guide to Creating Objective-C Applications for the iPhone

Dan Pilone(Author)

O'Reilly (Publisher)

1st Edition

Published on 20. October 2009

560 pages

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PDF with Adobe-DRM

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978-1-4493-8912-3 (ISBN)

€37.49incl. 7% vat

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for PDF with Adobe-DRM

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Description

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Content

Intro
Advance Praise for Head First iPhone Development
Copyright
Dedication
The Authors
Table of Contents
1. getting started: Going mobile
2. iPhone app patterns: Hello @twitter!
3. objective-c for the iPhone: Twitter needs variety
4. multiple views: A table with a view
5. plists and modal views: Refining your app
6. saving, editing, and sorting data: Everyone's an editor...
7. tab bars and core data: Enterprise apps
8. migrating and optimizing with core data: Things are changing
9. camera, map kit, and core location: Proof in the real world
appendix i, leftovers: The top 6 things (we didn't cover)
appendix ii, preparing your app for distribution: Get ready for the App Store
how to use this book: Intro
Who is this book for?
Who should probably back away from this book?
We know what you're thinking.
And we know what your brain is thinking.
Metacognition: thinking about thinking
Here's what WE did:
Here's what YOU can do to bend your brain into submission
Read me
System requirements
The technical review team
Acknowledgments
Safari® Books Online
1. getting started: Going mobile
There's a lot of buzz and a lot of money tied up inthe App Store...
Mobile applications aren't just ported desktop apps
iPhone apps are not small desktop apps
Anatomy of an iPhone app
First we have one or more views...
...then the code that makes the views work...
...and any other resources, all packaged intoyour application.
Mike can't make a decision
Make a good first impression
It all starts with the iPhone SDK
Xcode includes app templates to help you get started
Xcode is the hub of your iPhone project...
Build your interface using... Interface Builder
Add the button to your view
The iPhone Simulator lets you test your app on your Mac
What happened?
Unless the UI components are hooked up to the code, nothing is going to happen.
Use Interface Builder to connect UI controls to code
Interface Builder lists which events a component can trigger
Elements dispatch events when things happen to them
Connect your events to methods
iPhonecross
iPhonecross Solution
Your iPhone Toolbox
2. iPhone app patterns: Hello @twitter!
First we need to figure out what Mike (really) wants
App design rules-the iPhone HIG
Application types
HIG guidelines for pickers and buttons
Create a new View-based project for InstaTwit
Start with the view layout
The life of a root view
First, get the data from Mike
Use pickers when you want controlled input
When in doubt, check out Apple's API documentation
Fill the picker rows with Mike's data
Pickers get their data from a datasource...
...and tell their delegates when something happens.
There's a pattern for that
Controls have their own specific datasources and delegates
Protocols tell you what methods (messages) you need to implement
First, declare that the controller conforms to both protocols
Next, add Mike's activities and feelings to the implementation file
The datasource protocol has two required methods
Connect the datasource just like actions and outlets
There's just one method for the delegate protocol
The button needs to be connected to an event
Without an action, your button won't work!
Add the IBOutlet and property to our view controller
Connect the picker to our outlet
Use our picker reference to pull the selected values
iPhonecross
iPhonecross Solution
Your iPhone Toolbox
3. objective-c for the iPhone: Twitter 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
Objective-C can automatically release references, too.
To keep your memory straight, you need to remember just two things
But when Mike's finished typing...
Customize your UITextField
Next change the label on the return key
Components that use the keyboard ask it to appear...
...by passing messages to other objects
Ask the textField to give up focus
Messages in Objective-C use named arguments
Use message passing to tell our viewcontroller when the Done button is pressed
Something's still not right
Build the tweet with strings
Objective-Ccross
Your Objective-C Toolbox
Objective-Ccross Solution
4. multiple views: A table with a view
So, how do these views fit together?
The navigation template pulls multiple views together
The navigation template starts with a table view
A table is a collection of cells
Each drink gets its own cell... sorta
Just a few more drinks
Plists are an easy way to save and load data
Built-in types can save and load from plists automatically
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 views
We'll use the tap notification in the table view delegate
Instantiate a view controller like any other class
Dictionaries store informationas key-value pairs
Debugging-the dark side of iPhone development
Warnings can help find problems without debugging
First stop on your debugging adventure: the console
Interact with your application while it's running
And when it's about to stop running
Xcode supports you after your app breaks, too
The Xcode debugger shows you the state of your application
What the heck is going on?
MultipleViewscross
Your iPhone Toolbox
MultipleViewscross Solution
5. plists and modal views: Refining your app
It all started with Sam...
Use the debugger to investigate the crash
We're trying to stuff a dictionary into a string
Update your code to handle a plist of dictionaries
The detail view needs data
Each dictionary has all the information we need
We have a usability problem
Use a disclosure indicator if your cell leads to more information
Sales were going strong...
Use navigation controller buttons for editing
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...
...and information about the nib's File's Owner
You can subclass and extend views like any other class
Use Xcode to create a view controller without a nib
Modal views focus the user on the task at hand...
...like adding or editing items
Any view can present a modal view
Our view doesn't have a navigation bar
Create the save and cancel buttons
Write the save and cancel actions
iPhoneDevcross
Your iPhone Toolbox
iPhoneDevcross Solution
6. saving, editing, and sorting data: Everyone's an editor...
Sam is ready to add a Red-Headed School Girl...
...but the keyboard is in the way
We need to wrap our content in a scroll view
The scroll view is the same size as the screen
The keyboard changes the visible area
iPhone notifies you about the keyboard
Register with the default notification center for events
Then unregister when you're done
Keyboard events tell you the keyboard state and size
The table view doesn't know its data has changed
You need to ask the table view to reload its data
The array is out of order, too
We can sort our array using NSSortDescriptor
Table views have built-in support for editing and deleting
NavigationControllercross
NavigationControllercross Solution
Your iPhone Development Toolbox
7. tab bars and core data: Enterprise apps
HF bounty hunting
Choose a template to start iBountyHunter
Drawing how iBountyHunter works...
Build the fugitive list view
Next up: the captured view
After a quick meeting with Bob...
Core Data lets you focus on your app
But wait, there's more!
Core Data needs to know what to load
We need to define our types...
Core Data describes entities with a Managed Object Model
Build your Fugitive entity
Whip up a Fugitive class without writing a line
Our generated Fugitive class matches our Managed Object Model
NSManagedObject handles storage and memory for generated properties
NSManagedObject also implements the properties
Use an NSFetchRequest to describe your search
Ask the Managed Object Context to fetch data using your NSFetchRequest
Add the database as a resource
Back to the Core Data stack
The template sets things up for a SQLite DB
iPhone Apps are read-only
The iPhone's application structure defines where you can read and write
Use the Documents directory to store user data
Copy the database to the correct place
To be continued...
CoreDatacross
Your Core Data Toolbox
CoreDatacross Solution
8. migrating and optimizing with core data: Things are changing
Bob needs documentation
Everything stems from our object model
The data hasn't been updated
Core Data caught a mismatch between our DB and our model
Data migration is a common problem
We need to migrate the old data into the new model
Our two models need different versions
Xcode makes it easy to version the data model
Core Data can "lightly" migrate data
Bob has some design input
The Managed Object Context saves new or changed items
A quick demo with Bob
Use predicates for filtering data
NSFetchRequest concepts are nearly identical to SQL
We need to set a predicate on our NSFetchRequest
Core Data controller classes provide efficient results handling
Table views and NSFetchedResultsControllers are made for each other
Time for some high-efficiency streamlining
Next we need to change thesearch to use the controller...
Refactor viewWillAppear to use the controller
We need to refresh the data
NSFetchedResultsController can check for changes
DataMigrationcross
DataMigrationcross Solution
Your Data Toolbox
9: camera, map kit, and core location: Proof in the real world
For Bob, payment requires proof!
Flip over for the detail view!
The way to the camera...
The iPhone isn't the only device using apps
There's a method for checking
Prompt the user with action sheets
We'll use action sheets to let the user pick the image source
Bob needs the where, in addition to the when
Core Location can find you in a few ways
Core Location relies on the LocationManager
Add a new framework
Then update the header file
Just latitude and longitude won't work for Bob
Map Kit is new with iPhone 3.0
A little custom setup for the map
Annotations require a little more finesse
AddingFunctionalitycross
AddingFunctionalitycross Solution
Your extras Toolbox
It's been great having you here!
i. leftovers: The top 6 things (we didn't cover)
#1. Internationalization and Localization
Localizing nibs
Localizing string resources
Generating your strings file
#2. UIWebView
Using UIWebView
UIWebView properties
Loading generated content
The UIWebView supports a delegate, too
#3. Device orientation and view rotation
The view controller tells the iPhone OS what orientations it supports
Handling view rotations
Handling rotation with two different views
#4. View animations
Animating table view updates
Animating view and control changes
#5. Accelerometer
All you need is the UIAccelerometer
Understanding the device acceleration
#6. A word or two about gaming...
Multitouch
Quartz and OpenGL
Quartz
OpenGL
Game Kit
ii. preparing an app for distribution: Get ready for the App Store
Apple has rules
Start at the Apple Developer Portal
First get your Development Certificate
The Provisioning Profile pulls it all together
Keep track in the Organizer
A few final tips...
Index
Symbols
A
B
C
D
E
F
G
H
I
K
L
M
N
O
P
Q
R
S
T
U
V
W
X

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Head First iPhone Development

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