Monthly Archives: May 2010

How to Create Class Categories in Objective C

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Note: Video is Best Viewed in Full Screen Mode

As I began refining some sample code for making Universal Apps for the iPhone and iPad, I sought a way to make my code as concise as possible. I needed to determine if the app was running on an iPad or iPhone/iPod Touch and use it to my advantage. This basic information is contained in the UIDevice class.

Unfortunately, using:

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How to Use iPhone OS Templates in XCode Using the iPhone 3.2 SDK

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I started working on a video tutorial on how to make a universal app which will run on both the iPhone/iPod Touch and the iPad. I began by describing all the different iPhone OS Templates and then focused in on the template to use to create what Apple calls Universal Apps.

Going through this exercise took more time than I really wanted to spend so I decided to split that part out. The contents of this tutorial on iPhone OS Template may seem a little obvious… but sometimes the obvious seems to land right under our noses without us noticing.

That happened to me when I started looking into the process of creating universal apps. I missed out on the fact that I could use the windows based application template to do just that. So then what other options did I have as a developer regarding these templates? I did a little digging.

This tutorial is not earth shattering, but I think it is good preparation for getting into the subject of writing universal apps.

Originally published on iPhone Obsessed blog