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POFrom the results of UIImagePickerControlleHow, how do I get JPEG with metadata included in it?
 

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  1. POFrom the results of UIImagePickerControlleHow, how do I get JPEG with metadata included in it?
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    <p>On iOS 4.2 when I use UIImagePickerController to let the user select a image from the photo library these are the dictionary keys that are returned to me:</p> <pre><code>2011-03-02 13:15:59.518 xxx[15098:307] didFinishPickingMediaWithInfo: info dictionary: { UIImagePickerControllerMediaType = "public.image"; UIImagePickerControllerOriginalImage = "&lt;UIImage: 0x3405d0&gt;"; UIImagePickerControllerReferenceURL = "assets-library://asset/asset.JPG?id=1000000050&amp;ext=JPG"; } </code></pre> <p>Using one or more of these keys, how can I get a JPEG representation that would include the image metadata (such as exposure information and GPS location data) such that I can upload that somewhere and have the metadata included (not stripped off)? </p> <p>I see from Warren Burton's very nice answer in <a href="https://stackoverflow.com/questions/3837115/display-image-from-url-retrieved-from-alasset-in-iphone">Display image from URL retrieved from ALAsset in iPhone?</a> how to use the UIImagePickerControllerReferenceURL and the ALAssetsLibrary assetForURL method to get to the ALAsset and the ALAssetRepresentation. But what do I do then to get to the JPEG that includes in it all the metadata?</p> <p>Or is there a mechanism through the UIImage?</p> <p>The bottom line here is that I want to get JPEG with the metadata included in it...</p>
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