183. Registering Users with Firebase using FirebaseAuth

[Aatashh]

code is exactly matched with the lesson but these two errors came out of nowhere:-

lib/screens/chat_screen.dart:14:3: Error: Type 'FirebaseUser' not found.
FirebaseUser loggedInUser;
^^^^^^^^^^^^
lib/screens/chat_screen.dart:12:7: Error: The non-abstract class '_ChatScreenState' is missing implementations for these members:

• State.build
  Try to either
• provide an implementation,
• inherit an implementation from a superclass or mixin,
• mark the class as abstract, or
• provide a 'noSuchMethod' implementation.

class _ChatScreenState extends State {
^^^^^^^^^^^^^^^^
/C:/flutter/packages/flutter/lib/src/widgets/framework.dart:1428:10: Context: 'State.build' is defined here.
Widget build(BuildContext context);
^^^^^
lib/screens/chat_screen.dart:14:3: Error: 'FirebaseUser' isn't a type.
FirebaseUser loggedInUser;
^^^^^^^^^^^^

[Aatashh]

[Aatashh]

somebody help!!!

[ghost]

use User instead of FirebaseUser

[Aatashh]

Thanks Nawab that is fixed now searching for _ChatScreenState

[shivamkg0604]

After firebase_auth version 0.18.0

Few breaking updates were made in firebase_auth 0.18.0. FirebaseUser is now called User, currentUser is a getter, and currentUser is synchronous.

This makes the code:
class _ChatScreenState extends State {
final _auth = FirebaseAuth.instance;
User loggedInUser;

@OverRide
void initState() {
super.initState();
getcurrentuser();
}

void getcurrentuser() {
try {
final user = _auth.currentUser;
if (user != null) {
loggedInUser = user;
print(loggedInUser.email);
}
} catch (e) {
print(e);
}
}

Before firebase_auth version 0.18.0

email is a property of FirebaseUser object. Since auth.currentUser() return a future, you have to await in order to get the user object.

[Aatashh]

After firebase_auth version 0.18.0

Few breaking updates were made in firebase_auth 0.18.0. FirebaseUser is now called User, currentUser is a getter, and currentUser is synchronous.

This makes the code:
class _ChatScreenState extends State {
final _auth = FirebaseAuth.instance;
User loggedInUser;

@OverRide
void initState() {
super.initState();
getcurrentuser();
}

void getcurrentuser() {
try {
final user = _auth.currentUser;
if (user != null) {
loggedInUser = user;
print(loggedInUser.email);
}
} catch (e) {
print(e);
}
}

Before firebase_auth version 0.18.0

email is a property of FirebaseUser object. Since auth.currentUser() return a future, you have to await in order to get the user object.

Thank you Shivam!

[sulavchhetri]

After firebase_auth version 0.18.0

Few breaking updates were made in firebase_auth 0.18.0. FirebaseUser is now called User, currentUser is a getter, and currentUser is synchronous.

This makes the code:
class _ChatScreenState extends State {
final _auth = FirebaseAuth.instance;
User loggedInUser;

@OverRide
void initState() {
super.initState();
getcurrentuser();
}

void getcurrentuser() {
try {
final user = _auth.currentUser;
if (user != null) {
loggedInUser = user;
print(loggedInUser.email);
}
} catch (e) {
print(e);
}
}

Before firebase_auth version 0.18.0

email is a property of FirebaseUser object. Since auth.currentUser() return a future, you have to await in order to get the user object.

Thank you so much!!

[sulavchhetri]

In the exact same lesson, Please help while using modal progess hud so that it doesn't spin while the password and email are not entered and i click on login button but only spin when the user email and password are entered
Roundbutton(
title: 'Log In',
onPressed: () async {
setState(() {
showSpinner= true;
});
try{
final user = await _auth.signInWithEmailAndPassword(email: email, password: password);
Navigator.pushNamed(context, ChatScreen.id);
setState(() {
showSpinner= false;
});
}
catch(e){
print(e);
}
},
),