iPad, the Future, and the Luxury of Starting Over
A luxury that you seldom have in the world of software development is the luxury of starting over. I am not talking about throwing away everything and start from scratch.…
Test Driven Development in XCode
Test Driven Development, or TDD for short, is a simple software development practice where unit tests, small focused test cases, drive the development forward. This is most easily explained by…
Google Translate and iPhone apps
The Cocoa and Cocoa Touch frameworks has a really nice function for acquiring a localized string NSLocalizedString(). Just pass in a key and you are done, for strings that are…
Add some polish to iPhone app start up
First impressions last, and the very first impression your users have of your iPhone application is the start up. First step is to have a nice Default.png, but not many…
Queued Background Tasks for Cocoa
The megahertz race is over, and instead we get more execution cores. This means that we as developers must make our applications parallel, in order to take advantage of the…
Regular Expressions and Cocoa
Regular expressions is a powerful tool for solving many problems related to text. It can be misused as any good tool, but there are moments when they are the best…
Introduction to iPhone development
It has been little more than 2 years since the iPhone was first announced and during that time it has managed to make a huge impact on the mobileindustry. Introduction…
Adding Sorted Inserts to Cocoa Arrays
NSArray and NSMutableArray have methods for sorting arrays, NSArray returns new sorted arrays and NSMutableArray can be sorted in place. The sort methods comes in three flavours; using a function,…
Bridging the Gap Between Java and Cocoa
Many Java developers are looking at new dynamic languages, such as Groovy and JRuby, mostly because of the freedom and rapid development that a dynamic language allows. Some of my…
UIToolbars in iPhone OS 2.x
The new release of iPhone OS 3.0 adds some nice API:s for managing a contextual toolbar. This is well needed as toolbars in the current iteration of iPhone OS is…
iPhone OS and the Lowest Common Denominator
Nishant wrote a good piece on why Apple continue to outdo it's rivals, he used a variant of a quote by Canadian hockey player Wayne Gretzky to make his point:…
Proxy Based AOP for Cocoa Touch
UITabBarController is generally used as is, no subclassing required. It creates a UITabBar and manages a list of UIViewControllers, keeping track of the tab in focus, UI creation and everything…
Finding Subview of a Particular Class in Cocoa
Many of the UIView subclasses in Cocoa, and especially Cocoa Touch are created by combining many different simple views into a more complex view. UITableViewCell is a good example, concisting…
UIButton troubles, a better solution
I described in my previous post how you can change the class of a live object instance. The use-case was a workaround for bug in Cocoa Touch's UIKit. What if…
UIButton troubles, and Obj-C magic
When developing SC68 Player for the iPhone I came upon a quite peculiar problem regarding the UIButton. First the preface I wanted to add a star button to the right…