iOS and Cocoa goodies

Whether you are trying to figure out why your array has 3 objects instead of 5 or why your game plays backward since the new guy started, debugging is an essential part of the development process. At the end of this article, you’ll have an understanding of the most important debugging facilities available to you and how to use them to help squash your bugs in less time.We will be covering how to:Inspect your applications state using the consolePerform logging, and move beyond NSLogTrack memory usage by following object life-cycles

Recently here at ELC, we’ve been working on an app that requires a lot of server interaction, which has been a learning experience for managing threading, server load and connectivity.

Attention all you iOS devs, Facebook has just released its Facebook SDK 3.1 for iOS.

The UISlider control offers a way to continuously get values from the user within a range of set values. In the Interface Builder library of controls, there is only a horizontal version of the slider, with no obvious way to change its orientation. In this blog, we’ll learn how to rotate the slider control to a vertical orientation.

The NSNumberFormatter is one of those useful Foundation classes that is easy to forget about.

I’ve mentioned some excellent open source games from the app store that could be used as a great examples for learning how to create games.  Most of these games use Cocos2D and I’ve come across another Cocos2D game that makes for a great example.

One of the great new features of iOS 5 is the addition of the Core Image (CI) framework.

This framework has been available for a few years on the Mac, but now its advanced image processing and filtering capabilities are available on the iOS platform as well.

One particularly cool new feature available in Core Image, on both iOS 5 and Lion, is its ability to detect faces in an image.

Today there have been reports on Twitter about iOS apps being rejected for using the now deprecated UDID variable.

MAC Address Based UUID Replacements:

✔ Sources: https://github.com/gekitz/UIDevice-with-UniqueIdentifier-for-iOS-5

Non-MAC Address Based UUID Replacements

Tuturial: http://oleb.net/blog/2011/09/how-to-replace-the-udid/