How can I output NSData containing a .gif file from a UIImage?

Asked Aug 21 '13 at 12:56

Active Aug 21 '13 at 16:42

Viewed 99 times

I have been trying to convert an image to a .gif file contained in an NSData instance, but iOS provides only 2 methods for image format output:

UIImagePNGRepresentation
UIImageJPEGRepresentation

returning PNG files and JPEG files respectively as NSData. Is there any API or way to get NSData for .gif files?

I do not have a path or a URL for a file. It is a UIImage which I get after a call to my app's core. Soo, the below code will not work for my scenario.

NSString *pathForGif = [[NSBundle mainBundle] pathForResource: @"gifFile" ofType: @"gif"];
NSData *gifData = [NSData dataWithContentsOfFile: pathForGif];
NSLog(@"Data: %@", gifData);

Is there any way to output a .gif file from a UIImage?

edited Aug 21 '13 at 16:42

Brad Larson

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asked Aug 21 '13 at 12:56

XYZ

1

you searched a lot, but you missed the first google result. http://stackoverflow.com/questions/3438889/converting-gif-images-to-nsdata – Gabriele Petronella Aug 21 '13 at 12:58
@GabrielePetronella He wants to take an existing image and convert to GIF data, not read an existing GIF's data. – Mike Weller Aug 21 '13 at 13:00
@MikeWell "*Is there any API or way to get NSData for .gif files*". Am I missing something? – Gabriele Petronella Aug 21 '13 at 13:01
He wants an equivalent to `UIImagePNGRepresentation` but which returns the image encoded as a GIF file. – Mike Weller Aug 21 '13 at 13:02
oh I see. I got it wrong, then. Apologies. – Gabriele Petronella Aug 21 '13 at 13:03
Where's the .gif file? – Gabriele Petronella Aug 21 '13 at 13:07
Its a UIImage which I get from my app's call to the core. Its complicated!!! – XYZ Aug 21 '13 at 13:10
Summarize that in your question. It can be useful – Gabriele Petronella Aug 21 '13 at 13:14
see this link i think you got it... http://stackoverflow.com/questions/8343278/iphone-nsdata-and-byte-conversation-issue – Maulik Kundaliya Aug 21 '13 at 13:32

How can I output NSData containing a .gif file from a UIImage?

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