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@mayoff
mayoff / makeAnimatedGif.m
Created February 16, 2013 23:00
Example of creating an animated GIF on iOS, with no 3rd-party code required. This should also be easy to port to OS X.
#import <UIKit/UIKit.h>
#import <ImageIO/ImageIO.h>
#import <MobileCoreServices/MobileCoreServices.h>
static UIImage *frameImage(CGSize size, CGFloat radians) {
UIGraphicsBeginImageContextWithOptions(size, YES, 1); {
[[UIColor whiteColor] setFill];
UIRectFill(CGRectInfinite);
CGContextRef gc = UIGraphicsGetCurrentContext();
CGContextTranslateCTM(gc, size.width / 2, size.height / 2);