TweetFollow Us on Twitter

Tiger Time

Volume Number: 21 (2005)
Issue Number: 5
Column Tag: Programming

Tips From Big Nerd Ranch

Tiger Time

by Aaron Hillegass, Chris Campbell, and Marquis Logan

For this special Tiger issue, it seems appropriate to pass on a few tips that may help as you move your development efforts to Mac OS X 10.4.

All-In-One

Xcode 2 has several nifty new features, but our absolute favorite is "All-In-One Layout." In previous versions of Xcode, if you had a few projects open and each project had a build panel, a run log, a debugger panel, and an editor window, you were quickly lost in a sea of windows. In Xcode 2, all of these functions can be done in a single window. To experience the pure joy of All-In-One, you must close all your projects and open the General Preferences:


Figure 1.

When you open a project, there will be a segmented controller labeled Page on the left end of the toolbar:


Figure 2.

There are three pages:

    The editor page handles editing, project search, and revision management.

    The build page handles the building, the build log, and the run log.

    The debug page handles debugging.

If you often work with several projects simultaneously, this will make your life a much more pleasant place.

Backwards Compatibility

If only users would update immediately to Tiger, we would not have to worry about backwards compatibility. The most common source of backwards compatibility issues is inadvertent use of new Tiger APIs. This will prevent your application from running on 10.3. There are two good solutions to the problem.

    Solution 1: Use the 10.3 SDK (or 10.2 if needed) for apps that should only use Panther APIs.


Figure 3.

This will cause the application to link against stub libraries that match the APIs available on 10.3.

    Solution 2 (our favorite): Use the "Current Mac OS" SDK to take advantage of all the latest APIs on the current system:


Figure 4.

and set the "Mac OS X Deployment Target" in the target build settings to 10.3:


Figure 5.

This causes the newer APIs to be weak-linked into the application. It requires a little additional work by the developer to check the availability of an API in the code and gracefully handle cases where API is missing (running on an earlier version of the OS).

C function symbols need to be checked if their value is valid:

if (CGContextFillEllipseInRect != NULL)
{
   CGContextFillEllipseInRect(context, rect);
} else {
   // Older OS version actions
}

Objective-C methods can be detected using -[NSObject respondsToSelector:]


if ([tableView respondsToSelector:@selector(setColumnAutoresizingStyle)])
{
   [tableView setColumnAutoresizingStyle:NSTableViewLastColumnOnlyAutoresizingStyle];
} else {
   // Older OS version actions
}

This is the most powerful solution as it allows the developer to take advantage of the latest features while maintaining the broadest compatibility.

See Apple's documentation on cross development for more details:

http://developer.apple.com/documentation/DeveloperTools/Conceptual/cross_development/index.html

Debugging Bindings

There have been many complaints that bindings are difficult to debug. This is sadly still true, but Apple has begun to make things easier for us. There is now a default NSBindingDebugLogLevel. Set it to 1 to turn on logging. The easiest way is to pass it as an argument on the command-line. Under the Executables group in Xcode, select your application, and look at the info panel. Add the argument -NSBindingDebugLogLevel 1.


Figure 6.

In the short time that we have been using Tiger, we have found it to be a superior platform for developers. It is chock-full of fun new technologies and is even more beautiful than 10.3. Enjoy!


Aaron Hillegass, Chris Campbell, and Marquis Logan

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

Rodeo Stampede guide to running a better...
In Rodeo Stampede, honing your skills so you can jump from animal to animal and outrun the herd as long as possible is only half the fun. Once you've tamed a few animals, you can bring them home with you. [Read more] | Read more »
VoxSyn (Music)
VoxSyn 1.0 Device: iOS Universal Category: Music Price: $6.99, Version: 1.0 (iTunes) Description: VoxSyn turns your voice into the most flexible vocal sound generator ever. Instantly following even subtle modulations of pitch and... | Read more »
Catch Battleplans on Google Play from Ju...
Real-time strategy title Battleplans is due for release on Google Play on June 30th, following its release for iOS systems last month. With its simple interface and pretty graphics, the crowd-pleaser brings a formerly overlooked genre out for the... | Read more »
iDoyle: The interactive Adventures of Sh...
iDoyle: The interactive Adventures of Sherlock Holmes - A Scandal in Bohemia 1.0 Device: iOS Universal Category: Books Price: $1.99, Version: 1.0 (iTunes) Description: Special Release Price $1.99 (Normally $3.99) | Read more »
Five popular free apps to help you slim...
Thanks to retail and advertising, we're used to thinking one season ahead. Here we are just a week into the summer and we're conditioned to start thinking about the fall. [Read more] | Read more »
How to ride longer and tame more animals...
It's hard to accurately describe Rodeo Stampede to people who haven't seen it yet. It's like if someone took Crossy Roadand Disco Zoo and put them in a blender, yet with a unique game mechanic that's still simple and fun for anyone. [Read more] | Read more »
Teeny Titans - A Teen Titans Go! Figure...
Teeny Titans - A Teen Titans Go! Figure Battling Game 1.0.0 Device: iOS Universal Category: Games Price: $3.99, Version: 1.0.0 (iTunes) Description: Teeny Titans, GO! Join Robin for a figure battling RPG of epic proportions! TEENY... | Read more »
NinjAwesome: Tips and tricks to be a mor...
Sorry about that headline, but I'm going to go ahead and assume that GameResort would not have named its game NinjAwesome without expecting some of that. It is, in fact, pretty awesome the way it combines an endless runner and old school arcade... | Read more »
Into Mirror (Games)
Into Mirror 1.0 Device: iOS Universal Category: Games Price: $1.99, Version: 1.0 (iTunes) Description: "Is all that we see or seem, but a dream within a dream?"- Edgar Allan Poe New game by Lemon Jam Studio, the team behind Pursuit... | Read more »
Perchang (Games)
Perchang 1.0 Device: iOS Universal Category: Games Price: $1.99, Version: 1.0 (iTunes) Description: Welcome to Perchang! A test of skill and puzzle solving across 60 stunning levels. | Read more »

Price Scanner via MacPrices.net

15-inch Retina MacBook Pros on sale for $200-...
B&H Photo has 15″ Retina MacBook Pros on sale for up to $210 off MSRP. Shipping is free, and B&H charges NY tax only: - 15″ 2.2GHz Retina MacBook Pro: $1799.99 $200 off MSRP - 15″ 2.5GHz... Read more
Mac minis on sale for up to $100 off MSRP
B&H Photo has Mac minis on sale for up to $100 off MSRP including free shipping plus NY sales tax only: - 1.4GHz Mac mini: $449 $50 off MSRP - 2.6GHz Mac mini: $649 $50 off MSRP - 2.8GHz Mac mini... Read more
Clearance 2015 13-inch MacBook Airs available...
B&H Photo has clearance 2015 13″ MacBook Airs available for $300 off original MSRP. Shipping is free, and B&H charges NY sales tax only: - 13″ 1.6GHz/4GB/128GB MacBook Air (MJVE2LL/A): $799.... Read more
Apple refurbished Mac minis available for up...
Apple has Certified Refurbished Mac minis available starting at $419. Apple’s one-year warranty is included with each mini, and shipping is free: - 1.4GHz Mac mini: $419 $80 off MSRP - 2.6GHz Mac... Read more
ABBYY TextGrabber: 1,000,000 Installs in 5 Da...
ABBYY, an international OCR technologies provider, has announced that their image-to-text application TextGrabber, got installed 1,000,000 times in just five days while being featured by the App... Read more
New SkinIt Waterproof Case For iPhone 6
With its impact and waterproof design, the Skinit Waterproof case provides security and protection to guarantee your phone will get you through even the most demanding outdoor conditions. The impact-... Read more
iMacs on sale for up to $150 off MSRP
B&H Photo has 21″ and 27″ iMacs on sale for up to $150 off MSRP including free shipping plus NY sales tax only: - 27″ 3.3GHz iMac 5K: $2181.11 $118 off MSRP - 27″ 3.2GHz/1TB Fusion iMac 5K: $1949... Read more
12-inch 1.1GHz Retina MacBooks on sale for $5...
B&H Photo has 2016 12″ 1.1GHz/256GB Retina MacBooks on sale for up to $50 off MSRP. Shipping is free, and B&H charges NY tax only: - 12″ 1.1GHz Space Gray Retina MacBook: $1249 $50 off MSRP... Read more
WWDC Announcements Revisited Still Underwhelm...
I was disappointed that no new MacBook hardware was announced at this year’s all-software World Wide Developer’s Conference. Not even a hint about what’s in the development pipeline. Of course, we... Read more
Twelve South Compass 2 iPad Stand Now Availab...
Twelve South has updated its most popular iPad stand, Compass 2, with the introduction of two new colors — Gold and Rose Gold. These new color options n perfectly complement the new Rose Gold iPad... Read more

Jobs Board

*Apple* New Products Testers Needed - Apple...
…we therefore look forward to put out products to quality test for durability. Apple leads the digital music revolution with its iPods and iTunes online store, Read more
*Apple* Solutions Consultant - APPLE (United...
Job Summary As an Apple Solutions Consultant, you'll be the link between our future customers and our products. You'll showcase your entrepreneurial spirit as you Read more
*Apple* Retail - Multiple Positions - Apple,...
Job Description: Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, Read more
*Apple* Retail - Multiple Positions, Towson...
Job Description:SalesSpecialist - Retail Customer Service and SalesTransform Apple Store visitors into loyal Apple customers. When customers enter the store, Read more
*Apple* Professional Learning Specialist - A...
Job Summary The Apple Professional Learning Specialist is a full-time position for one year with Apple in the Phoenix, AZ area. This position requires a high Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.