return StreamBuilder(
  stream: Firestore.instance.collection('profile').where("uid", isEqualTo: currentUID).snapshots(),
  builder: (BuildContext context, AsyncSnapshot snapshot) {

    if (!snapshot.hasData) return CircularProgressIndicator();

    if (snapshot.hasData) {
      return ListView.builder(
        itemCount: snapshot.data.documents.length,
          itemBuilder: (context, index) {
          DocumentSnapshot ds = snapshot.data.documents[index];
          return Row(
            children: <Widget>[
              Expanded (child:Text(ds["fullname"])),
            ],
          );
        }
      );
    }
  }
);