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With the imminent demise of UIGetScreenImage, a number of readers have asked me how they can use the newer AVFoundation approach to access screen data in their iPhone applications. I went ahead and built some sample code that, when I'm finished messing with it, will be part of chapter 7 of my revise...

4 years ago 0 Comments
July 22, 2010 at 11:00AM
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Last December, Apple relented on the use of the otherwise private UIGetScreenImage() API. This function allows iOS developers to capture a screenshot on a device, regardless of the contents of the screen. In contrast, the standard SDK-safe approach to screen captures ([theView.layer renderInContext:...

4 years ago 0 Comments

When it comes to the iPhone, Augmented Reality refers to applications that integrate live camera feeds with data generated either directly from those camera images or from related data linked to the user's real world location. Over the past year, we've seen a number of augmented reality applicatio...

5 years ago 0 Comments