no exif on android

[mkraina]

Hi,
on Android I'm not able to retrieve some metadata, which are available on iOS.
For example copyright info (I have added ExifInterface.TAG_COPYRIGHT to EXIF_ATTRIBUTES in Exif.java) is not available on Android, while it can be reached in response.exif['{IPTC}'].CopyrightNotice.
I know it's highly possible this problem is not connected with this library, but maybe someone is more common with ExifInterface and will have some solution.