cloud_firestore 0.14.0 how to use the data method - firebase

Question

I updated to cloud_firestore 0.14.0
There's a few break changes:
BREAKING: The get data getter is now a data() method instead.
Before the update this is how I used the getter data
Before:
Future<String> getUsernameFromUserId(String userId) async {
return (await _userFirestoreCollection.document(userId).get()).data['screenName'];
}
This is how I use data now.. But doesn't seem to be working...
Now:
Future<String> getUsernameFromUserId(String userId) async {
return (await _userFirestoreCollection.document(userId).get()).data()['screenName'];
}

Answer 1

Starting from version cloud_firestore 0.14.0:
The method document() was changed and now you have to use doc() instead, therefore in your code you have to do the following:
Future<String> getUsernameFromUserId(String userId) async {
return (await _userFirestoreCollection.doc(userId).get()).data()["screenName"];
}
Example:
import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:flutter/material.dart';
import 'package:firebase_core/firebase_core.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
// This widget is the root of your application.
#override
Widget build(BuildContext context) {
return MaterialApp(
debugShowCheckedModeBanner: false,
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: FirstRoute(title: 'First Route'),
);
}
}
class FirstRoute extends StatefulWidget {
FirstRoute({Key key, this.title}) : super(key: key);
final String title;
#override
_FirstRouteState createState() => _FirstRouteState();
}
class _FirstRouteState extends State<FirstRoute> {
#override
void initState() {
super.initState();
}
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text("test"),
),
body: FutureBuilder(
future: getData(),
builder: (context, AsyncSnapshot<DocumentSnapshot> snapshot) {
if (snapshot.connectionState == ConnectionState.done) {
return Column(
children: [
Container(
height: 27,
child: Text(
"Name: ${snapshot.data.data()['name']}",
overflow: TextOverflow.fade,
style: TextStyle(fontSize: 20),
),
),
],
);
} else if (snapshot.connectionState == ConnectionState.none) {
return Text("No data");
}
return CircularProgressIndicator();
},
));
}
Future<DocumentSnapshot> getData() async {
await Firebase.initializeApp();
return await FirebaseFirestore.instance
.collection("users")
.doc("docID")
.get();
}
}