Read my post from yesterday at 10am again :-)

Execute a query using your content-uri, and use the returned cursor to
obtain the physical file-path (use the ImageColumns.DATA).

On Mar 27, 9:27 am, matthias <m.kaepp...@googlemail.com> wrote:
> okay, one solution is to do something like this:
>
>         String path = Environment.getExternalStorageDirectory
> ().getAbsolutePath()
>                 + "/dcim/Camera/" + [value of DISPLAY_NAME column for
> this image];
>
> and then do a new File(path).length()
>
> but I'm not sure if that path value is portable between Android
> devices.
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