Animated GIF Support

[lavoy]

No description provided.

[MattFoley]

Very awesome!

[rs]

Awesome! Could you just reformat the code to match to project coding style please? (brackets on their own lines)

[lavoy]

Sure thing. Sorry about that.

[rs]

no pb, thanks for the great work

[lavoy]

It would be nice to have a way to tell the user that the image is a GIF or not so they know how to process it later. Maybe an extra param in SDWebImageCompletedWithFinishedBlock but that would break compatibility. Thoughts?

[rs]

What about:

BOOL isAnimatedGIF = image.images != nil;

[lavoy]

Ah, that works well. No change needed then.

[MattFoley]

#377 Adds a getter for that to both UIImage and UIImageView, convenience/readability method for any future users.

[fanyj]

THIS IS AWESOME! Great featrue!
I been trying to integerate LBGIFImage into my project for weeks.
Since it use method

(UIImage *)animatedImageNamed:(NSString *)name duration:(NSTimeInterval)duration 

, there may be some efficiency problem when playing a large gif (I just experience this problem).
At last I move to [https://github.com/ondalabs/OLImageView] and it works fine for me.
I think we shall keep an eye on this problem.