StarButton(
  isStarred: UserFavorite
      .Users!
  valueChanged: (_isStarred) {
    if (_isStarred == true)
      setState(() async {
        var resp =
            await add(
                widget.oauth,
                widget.gatewayId,);
        if (resp.responseCode ==
            2) {
          await showDialog(
            context: context,
            builder:
                (alertDialogContext) {
              return AlertDialog(
                title: Text(
                    'Limit Reached'),
                content: Text(
                    'You are allowed to add up to 10 sensors as your favorite.'),
                actions: [
                  TextButton(
                    child: Text(
                        'Ok'),
                    onPressed:
                        () {
                      Navigator.pop(
                          alertDialogContext);
                    },
                  ),
                ],
              );
            },
          );
        }
      });
    else
      setState(() {
        delete(
            widget.oauth,
            widget.Id,
       );
      });
  },
)

FavoriteButton(
	iconSize: 8,
	iconColor: Colors.redAccent,
	valueChanged: (_isFavorite) {
	  print('Is Favorite : $_isFavorite');
	},
)