On Mar 27, 2012, at 4:50 PM, Andreas Mayer wrote: > The documentation for UIImage -scale says: > > "If you load an image from a file whose name includes the @2x modifier, the > scale is set to 2.0. If the filename does not include the modifier but is in > the PNG or JPEG format and has an associated DPI value, a corresponding scale > factor is computed and reflected in this property. " > > So I would expect PNG images to retain their scale value when saved and > loaded. > > If this does not work, there seems to be a bug somewhere. > Ray, did you try to explicitly set the image's scale value before creating > the PNG representation?
Well, I don't save it to a file, but to a NSData property on a Core Data managed object, and I use UIGraphicsBeginImageContextWithOptions, after which newImage = UIGraphicsGetImageFromCurrentImageContext() will set the scale of "newImage" appropriately (under retina to 2.0, I checked with setting a breakpoint and looking at the scale variable of the image)... It is more that the imageWithData class method on UIImage always will report a scale of 1.0 (is mentioned in this WWDC session I was talking about). Hmm... _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
