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copied!<p>Interesting question! I came up with the following solution working for images picked from your photo library (note my code is using <strong>ARC</strong>):</p> <p>Import <code>AssetsLibrary.framework</code> and <code>ImageIO.framework</code>.</p> <p>Then include the needed classes inside your .h-file:</p> <pre><code>#import <AssetsLibrary/ALAsset.h> #import <AssetsLibrary/ALAssetRepresentation.h> #import <ImageIO/CGImageSource.h> #import <ImageIO/CGImageProperties.h> </code></pre> <p>And put this inside your <code>imagePickerController:didFinishPickingMediaWithInfo:</code> delegate method:</p> <pre><code>ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init]; [library assetForURL:[info objectForKey:UIImagePickerControllerReferenceURL] resultBlock:^(ALAsset *asset) { ALAssetRepresentation *image_representation = [asset defaultRepresentation]; // create a buffer to hold image data uint8_t *buffer = (Byte*)malloc(image_representation.size); NSUInteger length = [image_representation getBytes:buffer fromOffset: 0.0 length:image_representation.size error:nil]; if (length != 0) { // buffer -> NSData object; free buffer afterwards NSData *adata = [[NSData alloc] initWithBytesNoCopy:buffer length:image_representation.size freeWhenDone:YES]; // identify image type (jpeg, png, RAW file, ...) using UTI hint NSDictionary* sourceOptionsDict = [NSDictionary dictionaryWithObjectsAndKeys:(id)[image_representation UTI] ,kCGImageSourceTypeIdentifierHint,nil]; // create CGImageSource with NSData CGImageSourceRef sourceRef = CGImageSourceCreateWithData((__bridge CFDataRef) adata, (__bridge CFDictionaryRef) sourceOptionsDict); // get imagePropertiesDictionary CFDictionaryRef imagePropertiesDictionary; imagePropertiesDictionary = CGImageSourceCopyPropertiesAtIndex(sourceRef,0, NULL); // get exif data CFDictionaryRef exif = (CFDictionaryRef)CFDictionaryGetValue(imagePropertiesDictionary, kCGImagePropertyExifDictionary); NSDictionary *exif_dict = (__bridge NSDictionary*)exif; NSLog(@"exif_dict: %@",exif_dict); // save image WITH meta data NSString *documentsDirectory = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0]; NSURL *fileURL = nil; CGImageRef imageRef = CGImageSourceCreateImageAtIndex(sourceRef, 0, imagePropertiesDictionary); if (![[sourceOptionsDict objectForKey:@"kCGImageSourceTypeIdentifierHint"] isEqualToString:@"public.tiff"]) { fileURL = [NSURL fileURLWithPath:[NSString stringWithFormat:@"%@/%@.%@", documentsDirectory, @"myimage", [[[sourceOptionsDict objectForKey:@"kCGImageSourceTypeIdentifierHint"] componentsSeparatedByString:@"."] objectAtIndex:1] ]]; CGImageDestinationRef dr = CGImageDestinationCreateWithURL ((__bridge CFURLRef)fileURL, (__bridge CFStringRef)[sourceOptionsDict objectForKey:@"kCGImageSourceTypeIdentifierHint"], 1, NULL ); CGImageDestinationAddImage(dr, imageRef, imagePropertiesDictionary); CGImageDestinationFinalize(dr); CFRelease(dr); } else { NSLog(@"no valid kCGImageSourceTypeIdentifierHint found …"); } // clean up CFRelease(imageRef); CFRelease(imagePropertiesDictionary); CFRelease(sourceRef); } else { NSLog(@"image_representation buffer length == 0"); } } failureBlock:^(NSError *error) { NSLog(@"couldn't get asset: %@", error); } ]; </code></pre> <p>One thing I noticed is, that iOS will ask the user to allow location services – if he denies, you won't be abled to get the image data …</p> <p><strong>EDIT</strong></p> <p>Added code to save the image including its meta data. It's a quick approach, so maybe there is a better way, but it works!</p>

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