How can you programmatically retrieve the comments made on a photo in your iOS photo stream?

Question

ALAsset contains the metadata for an image, which includes resolution, camera settings and location, but it doesn't appear to include comments from a photo stream.

That makes sense, but I would like to retrieve those comments.

Does anyone know if it is possible and where they might be stored?

Answer 1

It appears that you can access user comments for a specific image format only. The one mentioned is for Exchangeable Image File Format (EXIF).

const CFStringRef kCGImagePropertyExifUserComment;

Take a look the CGImageProperties Reference.