OS X 10.8.5, iOS 7.1.2
I have an OSX app that shows NSImages. When the user selects an image, it is
transferred to an iOS device as an NSData and then turned into a UIImage and
displayed onscreen.
The problem is I can't get the conversion of NSImage to NSData to UIImage to
work. I'm using a home-brew -nsDataFromNSImage: method (attached below) for the
conversion:
NSData *imageData = [self nsDataFromNSImage:nsImage];
On the iOS side, when I try to recreate a UIImage from the NSData, like this:
UIImage *userImage = [UIImage imageWithData:imageData];
-imageWithData: generates odd messages and returns NULL.
<Error>: ImageIO: PNG PNG unsigned integer out of range
<Error>: ImageIO: PNG [00][00][00][00]: invalid chunk type
<Error>: ImageIO: PNG [DA][AD][F9][1A]: invalid chunk type
<Error>: ImageIO: PNG [07][82]o[ED]: invalid chunk type
<Error>: ImageIO: PNG invalid distance too far back
Is there another way of doing this? I've also tried the method here without
success https://lists.apple.com/archives/cocoa-dev/2011/Aug/msg01102.html
-Carl
------------------------------------
- (NSData *) nsDataFromNSImage:(NSImage *) nsImage
{
NSBitmapImageRep *imageRep =
[NSBitmapImageRep imageRepWithData:[nsImage TIFFRepresentation]];
return [imageRep representationUsingType:NSPNGFileType
properties:nil];
}
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