Lập trình iPhone part 18

You've got a solid knowledge of Objective-C, Cocoa Touch, and the tools that bring these technologies together to create incredible new iPhone applica- tions.. You understand the iPhone

Where to Next?

ell, wow! You're still with us, huh? Great! It sure has been a long journey since that very first iPhone application we built together You've certainly come

a long way We'd love to tell you that you now know it all, but when it comes

to technology, and especially when it comes to programming, you never

know it all The programming language and frameworks we've been working with for the last 17 chapters are the end result of over 20 years of evolution And Apple engineers are feverishly working round the clock, thinking of that next cool new thing The iPhone platform has just begun to blossom There is

so much more to come

By making it through this book, you've built yourself a sturdy foundation

You've got a solid knowledge of Objective-C, Cocoa Touch, and the tools that bring these technologies together to create incredible new iPhone applica- tions You understand the iPhone software architecture, the design patterns that make Cocoa Touch sing In short, you are ready to chart your own course

We are so proud! So where to next?

Getting Unstuck

At its core, programming is about problem solving, about figuring things out

It's fun, and it’s rewarding like few things are But, at times, you will run up

against a puzzle that just seems insurmountable, a problem that just does not seem to have a solution

Sometimes, the answer just appears if you take a bit of time away from the

problem A good night's sleep or a few hours of doing something different can

often be all that is needed to get you through it Believe us; you can stare at the same problem for hours, overanalyzing and getting yourself so worked up that you miss an obvious solution

CHAPTER 18: Where to Next?

And then there are times when even a change of scenery doesn’t help And in those situa-

tions, it’s good to have friends in high places The following sections outline some resources you can turn to when you're in a bind

Apple’s Documentation

Become one with Xcode’s documentation browser The documentation browser is a front end to a wealth of incredibly valuable sample source code, concept guides, API references, video tutorials, and a whole lot more There are few areas of the iPhone that you won't be able to learn more about by making your way through Apple’s documentation And if you get comfortable with Apple’s documentation, making your way through uncharted territo- ries and new technologies as Apple rolls them out will be easier

OTE

Xcode’s documentation browser takes you to the same information you can get to by going to Apple's

Developer Connection web site at http: //developer.apple.com

Mailing Lists

You might also want to sign up for these handy mailing lists:

http://lists.apple.com/mai Iman/1listinfo/cocoa-dev This moderately

high-volume list run by Apple is primarily about Cocoa for Mac OS X Because of the common heritage shared by Cocoa and Cocoa Touch, however, many of the people on

this list may be able to help you Make sure to search the list archives before asking your

question, though

http://lists.apple.com/mai lman/1listinfo/xcode-users Another list maintained

by Apple, this one is specific to questions and problems related to Xcode

http: //lists.apple.com/mai Iman/1listinfo/quartz-dev This is an Apple-maintained

mailing list for discussion of the Quartz 2D and Core Graphics technologies

Discussion Forums

These discussion forums allow you to post your questions to a wide range of forum readers: http://www iphonedevsdk com On this web forum, iPhone programmers, both new and experienced, help each other out with problems and advice

http: //discussions.apple.com/category.jspa?categoryID=164 This link con- nects you to Apple’s community forums for Mac and iPhone software developers

http: //discussions.apple.com/category.jspa?categoryID=201 This one con-

nects to Apple’s community forums for discussing the iPhone

Web Sites

Visit these web sites for helpful coding advice:

http: //www iphonedevbook com This is the official web site for this book We will post errata as people report bugs and typos to us and maintain the most current version of

all book projects We'll also tell you what we've been working on lately and what we've

got in the works

http://www cocoadevcentral.com This portal contains links to a great many

Cocoa-related web sites and tutorials

http: //cocoaheads.org CocoaHeads is a group dedicated to peer support and promotion of Cocoa It focuses on local groups with regular meetings where Cocoa

developers can get together, help each other out, and even socialize a little bit There’s nothing better than knowing a real person who can help you out, so if there’s a Cocoa-

Heads group in your area, check it out If there’s not, why not start one?

http: //nscodernight.com NSCoder Nights are weekly, organized meetings where

Cocoa programmers get together to code and socialize Like CocoaHeads meetings, NSCoder Nights are independently organized local events

http: //cocoablogs.com This portal contains links to a great many blogs related to Cocoa programming

http://www iphonedevcentral org This web site is devoted to iPhone programming

tutorials

Blogs

If you still haven’t found a solution to your coding dilemma, you might want to read these blogs:

http: //theocacao.com This blog is maintained by Scott Stevenson, an experienced Cocoa programmer

http: //ww.wilshipley.com/blog/ Wil Shipley is one of the most experienced Objective-C programmers on the planet His Pimp My Code series of blog postings should be required reading for any Objective-C programmer

http: //rentzsch.com Wolf Rentzsch is an experienced, independent Cocoa program- mer and the founder of the C4 independent developers’ conference

CHAPTER 18: Where to Next?

http: //chanson livejournal.com Chris Hanson works at Apple on the Xcode team,

and his blog is filled with great insight and information about Xcode and related topics

And If All Else Fails

Drop Dave and Jeff an e-mail at daveandjeff@i phonedevbook com This is the perfect place

to send e-mails about typos in the book or bugs in our code We can't promise to respond to

every e-mail, but we will read all of them Be sure to read the errata before clicking send And

please do write and tell us about the cool applications you develop

Farewell

We sure are glad you came along on this journey with us We wish you the best of luck and hope that you enjoy programming the iPhone as much as we do

Index

#import statements, 257

#pragma directives, 157, 483-485

/* character, 475

*\ character, 475

(ellipsis), 58

abstract class, 239

accelerometer

accessing, 442-447

overview, 441

physics of, 441-442

Rolling Marble program, 452-460

ShakeAndBreak project, 447-452

accelerometer:didAccelerate: method, 443-447,

454

accessors, 35

accessory icons, 233

accessory view, 234

accessoryView property, 260

action argument, 266

action method, 39

action sheet, 81-84

actions

adding to view controllers, 34-41, 71-72,

106-108, 374-376

connecting, 73

declaring, 104-105, 151-152, 158-159

determining, 58, 71-76, 104

overview, 33-34

specifying, 50-52

actionSheet:didDismissWithButtonIndex:

method, 82-83

active controls, 55-56

Add Localization button, 485-486

Add submenu, 111

Add to Project setting, 24

additive primary colors, 366

addObserver:selector:name:object: method, 340

Adjust to Fit checkbox, 65

alerts, 79-84

Align Horizontal Center in Container option, 60

Alignment submenu, 60

allNames method, 219, 221-223, 225, 227 Alpha checkbox, 61

alpha component, 60, 367

altitude property, 432

animated parameter, 75-76

animation block, 101 Appkit framework, 21 Apple Human Interface Guidelines, 46 application constants, 371, 480-481

application localization, 473, 480-481, 490

application settings AppSettings application, 305-308 overview, 305

reading, 319-323 settings bundles adding to project, 309-310

child settings view, 317-319

multivalue field, 314-315 overview, 309

property list, setting up, 310-311 secure text field setting, 314 slider setting, 316-317 text field setting, 311-313 toggle switch setting, 315-316 user defaults, changing, 323-326 Application Support folder, 27 applicationDidFinishLaunching method, 44 applicationWillTerminate: method, 41, 336, 338,

340, 357 AppSettings application, 305-308 archiving

data objects, 343-344 model objects, 341-343 Archiving application, 345-350 atomically parameter, 334 Audio Toolbox framework, 182, 452 AudioServicesCreateSystemSoundID function,

182 AutocorrectionType key, 313 autorelease method, 191, 193-194, 198, 202-203, 212,218,223

autorotation autosize attributes, 90-96 overview, 89-91

restructuring view when rotated, 97-102

495