iOS开发问题之：如何将相册中的动态GIF图转化成NSData类型？

有没有什么办法能将UIImagePickerController得到的图片转换成原始NSData的方法呢？

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START

#import

                    NSURL *imageRefURL = [info valueForKey:UIImagePickerControllerReferenceURL];
                    
                    ALAssetsLibrary* assetLibrary = [[ALAssetsLibrary alloc] init];
                    void (^ALAssetsLibraryAssetForURLResultBlock)(ALAsset *) = ^(ALAsset *asset) {

                        if (asset != nil) {

                            ALAssetRepresentation *rep = [asset defaultRepresentation];
                            Byte *imageBuffer = (Byte*)malloc(rep.size);
                            NSUInteger bufferSize = [rep getBytes:imageBuffer fromOffset:0.0 length:rep.size error:nil];
                            NSData *imageData = [NSData dataWithBytesNoCopy:imageBuffer length:bufferSize freeWhenDone:YES];

                            [self setPrevImage];
                        }
                        else {
                        }                        
                    };
                    
                    [assetLibrary assetForURL:imageRefURL
                                  resultBlock:ALAssetsLibraryAssetForURLResultBlock 
                                 failureBlock:^(NSError *error){
                                 }];

END

原文链接：http://www.cocoachina.com/bbs/read.php?tid-151776-keyword-gif%7Cdata.html