Unable to display string from snapshot - flutter

Question

I would like to get data from firestore and display in the text but an eror has popup.
Thar error say type '_BroadcsastStream' is not a subtype of type 'String'.
Class i call the method
void main() => runApp(MaterialApp(
home : profUser(),
));
class profUser extends StatelessWidget {
#override
Widget build(BuildContext context) {
return new MaterialApp(
home : new profiUser(),
);
}
}
class profiUser extends StatefulWidget {
#override
_profiUserState createState() => _profiUserState();
}
class _profiUserState extends State<profiUser> {
#override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.indigo,
appBar: AppBar(
title: Text('Profile'),
actions: <Widget>[
IconButton(
icon: Icon(choices[1].icon),
onPressed: (){
logOut();
Navigator.push(context,MaterialPageRoute(builder: (context)
=> myLogin()));
},
),
],
),
body: Column(
children: <Widget>[
userDetail(),
],
),
);
}
}
Class to display text based on the data from firestore
class userDetail extends StatelessWidget{
#override
Widget build(BuildContext context){
return new StreamBuilder(
stream: UniQuery().getUserDetail(),
builder: (BuildContext context, snapshot){
if(!snapshot.hasData)
return new Text('Loading..... Please wait');
var userDocument = snapshot.data;
return new Column(
children: <Widget>[
Text('Name: ' + userDocument['name']),
Text('Age: ' + userDocument['age'],toString()),
Text('Address: ' + userDocument['address']),
Text('Result: ' + userDocument['result']),
],
);
}
);
}
}
Below the void that use in above code to get data from firestore
var userID;
Future<String> getCurrentUser() async{
final FirebaseUser user = await FirebaseAuth.instance.currentUser();
// return uID != null ? uID : null;
final String uID = user.uid.toString();
return uID;
}
setUserDetail() async{
userID = await getCurrentUser();
}

Answer 1

The problem is inside getUserDetail() you are passing an async function to documents(), so that function returns a Future. Before calling documents() you should first get the string, waiting the async call to finish, and then pass the string to documents().