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【ObjC】 GIF图片解析

作者:宝清 / 发布于2014/11/17/ 500

将gif图片解析成image数组


	+ (NSMutableArray *)praseGIFDataToImageArray:(NSData *)data;
	{
	 NSMutableArray *frames = [[NSMutableArray alloc] init];
	 CGImageSourceRef src = CGImageSourceCreateWithData((CFDataRef)data, NULL);
	 CGFloat animationTime = 0.f;
	 if (src) {
	 size_t l = CGImageSourceGetCount(src);
	 frames = [NSMutableArray arrayWithCapacity:l];
	 for (size_t i = 0; i < l; i++) {
	 CGImageRef img = CGImageSourceCreateImageAtIndex(src, i, NULL);
	 NSDictionary *properties = (NSDictionary *)CGImageSourceCopyPropertiesAtIndex(src, i, NULL);
	 NSDictionary *frameProperties = [properties objectForKey:(NSString *)kCGImagePropertyGIFDictionary];
	 NSNumber *delayTime = [frameProperties objectForKey:(NSString *)kCGImagePropertyGIFUnclampedDelayTime];
	 animationTime += [delayTime floatValue];
	 if (img) {
	 [frames addObject:[UIImage imageWithCGImage:img]];
	 CGImageRelease(img);
	 }
	 }
	 CFRelease(src);
	 }
	 return frames;
	}

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　图片解析　

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