private boolean shareComic() {

    if (PrefHelper.shareImage()) {
      shareComicImage();
      return true;
    }

    AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
    builder.setItems(
        R.array.share_dialog,
        new DialogInterface.OnClickListener() {
          @Override
          public void onClick(DialogInterface dialog, int which) {
            switch (which) {
              case 0:
                shareComicImage();
                break;
              case 1:
                shareComicUrl();
                break;
            }
          }
        });
    AlertDialog alert = builder.create();
    alert.show();
    return true;
  }