_showActivities() {
return FutureBuilder(
  future: UserController.getActivityByDate(
      {"date": widget.index.toIso8601String(), "id": widget.user}),
  builder: (context, snapshot) {
    if (snapshot.hasData != null) {
      if (snapshot.hasData && snapshot.data.toString() != "[]"){
        print(snapshot.data);
      return ListView.builder(

          itemCount: snapshot.data.length,
          itemBuilder: (context, position) {
            var item = snapshot.data.elementAt(position);
            return ListTile(
              title: Text("${item["activity"]["project"]}"),
              subtitle: Text(item["created_at"]),
            );
          });
      }

    }
      return Text("no data displayed");

  },
);