Retina display and [UIImage initWithData]

Question

I need to initialise images from raw data downloaded from a server which delivers the correct size of image based on the type of iPhone client.

I know that I should be setting the scale value to be 2.0 on the 640x960 display, however this is a readonly property and cannot be set during the init when using initWithData.

Any ideas?

Answer 1

I'm not aware of anything you can embed in the image data itself to tell the phone that it's a @2x image, but something like this should work:

UIImage * img = ...; img = [UIImage imageWithCGImage:img.CGImage scale:2 orientation:img.imageOrientation];