private void openImageDetails(final ImageGalleryEntry imgData, final ImageGalleryImageBinding binding) {
        if (imgData.image.isImageOrUnknownUri()) {
            openImageViewer(binding);
        } else {
            ShareUtils.openContentForView(getContext(), imgData.image.getUrl());
        }
    }
allows the gallery to open a image detail view (again)
main/src/main/java/cgeo/geocaching/ui/ImageGalleryView.java