I am learning firebase auth and google sign in. Here, I have prepared an app in which I will do google sign in and save the sign-in data till users sign out the account. But I am getting an error please solve this I am not able to find it anywhere.
import 'package:CovidTracker/Auth/authentication.dart';
import 'package:CovidTracker/Auth/chatRoom.dart';
import 'package:CovidTracker/constraints.dart';
import 'package:firebase_auth/firebase_auth.dart';
import 'package:flutter/material.dart';
class SignInScreen extends StatefulWidget {
@override
_SignInScreenState createState() => _SignInScreenState();
}
Constraints color = new Constraints();
class _SignInScreenState extends State<SignInScreen> {
@override
Widget build(BuildContext context) {
return FutureBuilder<User>(
future: FirebaseAuth.instance.currentUser,
builder: (context, snapshot) {
if (snapshot.hasData) {
User user = snapshot.data;
return ChatRoom(uid: user.uid);
} else {
return Column(
children: [
SizedBox(
height: 30.0,
),
Container(
height: 180,
width: MediaQuery.of(context).size.width - 30,
decoration: new BoxDecoration(
color: color.cardActiveBg,
borderRadius: new BorderRadius.all(Radius.circular(30.0)),
),
child: Row(
children: [
Image.asset(
'assets/images/chat.png',
height: 170.0,
),
Padding(
padding: const EdgeInsets.only(top: 30.0, left: 15.0),
child: Column(
children: [
Text(
'SignIn',
style: TextStyle(
fontWeight: FontWeight.bold,
fontFamily: 'Poppins',
fontSize: 28.0),
),
Text(
'To Chat',
style: TextStyle(
fontWeight: FontWeight.bold,
fontFamily: 'Poppins',
fontSize: 30.0),
),
],
),
),
],
),
),
SizedBox(
height: 20.0,
),
Center(
child: Image.asset(
'assets/images/googleLogo.png',
height: 100.0,
),
),
SizedBox(
height: 20.0,
),
InkWell(
onTap: () => googleSignInAcc().whenComplete(() async {
User user = await FirebaseAuth.instance.currentUser;
Navigator.of(context).pushReplacement(MaterialPageRoute(
builder: (_) => ChatRoom(uid: user.uid)));
}),
child: Container(
width: MediaQuery.of(context).size.width / 1.3,
height: 60.0,
decoration: new BoxDecoration(
borderRadius: new BorderRadius.circular(50.0),
color: color.primary),
child: Row(
children: [
SizedBox(
width: 20.0,
),
Image.asset(
'assets/images/googleLogo.png',
height: 45.0,
),
SizedBox(
width: 20.0,
),
Text(
'Sign in with Google',
style: new TextStyle(
fontSize: 17.0,
fontWeight: FontWeight.bold,
),
),
],
),
),
),
],
);
}
},
);
}
}
But I am getting error in this line
future: FirebaseAuth.instance.currentUser,
It is saying that
The argument type 'User' can't be assigned to the parameter type 'Future<User>'.
Google sign-in code is here
import 'package:firebase_auth/firebase_auth.dart';
import 'package:flutter/material.dart';
import 'package:google_sign_in/google_sign_in.dart';
FirebaseAuth auth = FirebaseAuth.instance;
final googleSignIn = GoogleSignIn();
//error handling dialog box
showErrorDialog(BuildContext context, String err) {
FocusScope.of(context).requestFocus(new FocusNode());
return showDialog(
context: context,
child: AlertDialog(
title: Text(
"Error Occured",
),
content: Text(err),
actions: [
OutlineButton(
child: Text("OK"),
onPressed: () => Navigator.pop(context),
),
],
),
);
}
Future<bool> googleSignInAcc() async {
GoogleSignInAccount googleSignInAccount = await googleSignIn.signIn();
if (googleSignInAccount != null) {
GoogleSignInAuthentication googleSignInAuthentication =
await googleSignInAccount.authentication;
AuthCredential credential = GoogleAuthProvider.credential(
idToken: googleSignInAuthentication.idToken,
accessToken: googleSignInAuthentication.accessToken);
UserCredential result = await auth.signInWithCredential(credential);
User user = await auth.currentUser;
print(user.uid);
return Future.value(true);
}
}
Future<bool> signOutUser() async {
User user = await auth.currentUser;
await googleSignIn.disconnect();
return Future.value(true);
}
Hope this is enough to explain the question. Please solve this I am stuck and the only way to get it solved is through you guys. Hope you will help to learn this newbie. Thank You So Much(:)
