I will be teaching my 3-Day Introduction to iOS Development workshop this month, November 24-26, 2010, right after I return from giving the second day opening keynote and teaching a one-day iPhone workshop at Future of Web Design in New York. The venue is the beautiful Lighthouse Arts in central Brighton (UK).

This intensive course will give you a solid foundation in developing with the iOS SDK (for iPhone, iPad, and iPod Touch), Xcode (both 3 & and the upcoming 4), and Objective-C. To see a more detailed outline of the course and get all the juicy details, please see the course's web-site.

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Unable to sleep, I instead spent the last hour porting Feathers from XAuthTwitterEngine to MGTwitterEngine (see my previous post for background).

Here are a few notes to help you for when you decide to the same:

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In March of this year, I created a Twitter library called XAuthTwitterEngine based on Matt Gemmell's awesome MGTwitterEngine library and the excellent work (and with the assistance) of a number of great developers (including Ben Gottlieb, Jon Crosby, Chris Kimpton, and Isaiah Carew, Steve Reynolds, and Norio Nomura). Back then, MGTwitterEngine didn't have oAuth/xAuth support and I built XAuthTwitterEngine as a stop-gap, with the intension of back-porting to MGTwitterEngine at some point.

Well, MGTwitterEngine has had excellent oAuth/xAuth for some time now and I finally got round to checking it out today only to realize just how much progress they've made. It's definitely time to deprecate XAuthTwitterEngine and start using MGTwitterEngine again (so I am back-porting Feathers to MGTwitterEngine at the moment).

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The Network Activity Indicator is that little spinner that shows up in the status bar when a data exchange is in progress. It's easy enough to show and hide:

[[UIApplication sharedApplication] setNetworkActivityIndicatorVisible: YES];

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If you're using [UIImage imageNamed:@"name_of_image"] (without the file name extension) to load in an image from your app's bundle, it will fail in iOS versions earlier than 4.0. To support 3.x, include the file name extension in your calls. So, to be safe, do: [UIImage imageNamed:@"name_of_image.ext"].