Optimising local image loading/rendering on iPhone

Posted by Tricky on Stack Overflow See other posts from Stack Overflow or by Tricky
Published on 2010-03-22T15:04:20Z Indexed on 2010/03/22 16:01 UTC
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iphone-sdk

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cocoa-touch

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iphone

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objective-c

Hi, I'm looking to create an interface where the user can navigate through large volumes of images. Each image has a thumbnail of 128x128 that I wish to display and will be kind of similar to coverflow in operation.

I have this all working in principle but am becoming stuck when navigating through content at speed. The interface begins to stutter and becoming jerky. I believe this is primarily because of disk i/o and the cost of rendering each image.

Is there anyway this can be handed over to a seperate thread simply? Defaulting to a greyed out thumbnail until the image has loaded? How have Apple managed to achieve this in coverflow?

Many thanks,

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