having an issue connecting with authentication with Firebase and Flutter - firebase

Question

I'm trying to verify the connection with Google account and Email with no success.
I'm not sure if it is a problem with versions of Dependency even though I have checked it in the net for few times or it is something with my code that isn't correct
app.gradle
implementation 'com.google.firebase:firebase-auth:19.1.0'
implementation 'com.google.android.gms:play-services-auth:17.0.0'
gradle
classpath 'com.android.tools.build:gradle:3.3.2'
classpath 'com.google.gms:google-services:4.3.3' // Google Services plugin
main.dart
import 'package:firebase_auth/firebase_auth.dart';
import 'package:flutter/material.dart';
import 'package:authentication/ui/home.dart';
import 'package:authentication/ui/login.dart';
import 'package:authentication/ui/splash.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
// This widget is the root of your application.
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: MainScreen(),
);
}
}
class MainScreen extends StatelessWidget {
#override
Widget build(BuildContext context) {
return StreamBuilder(
stream: FirebaseAuth.instance.onAuthStateChanged,
builder: (context,AsyncSnapshot<FirebaseUser> snapshot) {
if(snapshot.connectionState == ConnectionState.waiting)
return SplashPage();
if(!snapshot.hasData || snapshot.data == null)
return LoginPage();
return LoginPage();
},
);
}
}
firebase util
import 'package:firebase_auth/firebase_auth.dart';
import 'package:google_sign_in/google_sign_in.dart';
class AuthProvider {
final FirebaseAuth _auth = FirebaseAuth.instance;
Future<bool> signInWithEmail(String email, String password) async{
try {
AuthResult result = await _auth.signInWithEmailAndPassword(email: email,password: password);
FirebaseUser user = result.user;
if(user != null)
return true;
else
return false;
} catch (e) {
return false;
}
}
Future<void> logOut() async {
try {
await _auth.signOut();
} catch (e) {
print("error logging out");
}
}
Future<bool> loginWithGoogle() async {
try {
GoogleSignIn googleSignIn = GoogleSignIn();
GoogleSignInAccount account = await googleSignIn.signIn();
if(account == null )
return false;
AuthResult res = await _auth.signInWithCredential(GoogleAuthProvider.getCredential(
idToken: (await account.authentication).idToken,
accessToken: (await account.authentication).accessToken,
));
if(res.user == null)
return false;
return true;
} catch (e) {
print(e.toString());
return false;
}
}
}
splash
import 'package:flutter/material.dart';
class SplashPage extends StatelessWidget {
#override
Widget build(BuildContext context){
return Scaffold(
body: Container(
color: Theme.of(context).primaryColor,
child: SafeArea(
child: Container(
width: double.infinity,
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
CircularProgressIndicator(
backgroundColor: Colors.white,
),
const SizedBox(height: 10.0),
Text("Loading", style: TextStyle(
color: Colors.white,
fontWeight: FontWeight.w400,
fontSize: 18.0
),),
],
),
),
),
),
);
}
}
login
import 'package:authentication/utils/firebase_auth.dart';
import 'package:flutter/material.dart';
class LoginPage extends StatefulWidget {
#override
_LoginPageState createState() => _LoginPageState();
}
class _LoginPageState extends State<LoginPage> {
TextEditingController _emailController;
TextEditingController _passwordController;
#override
void initState() {
super.initState();
_emailController = TextEditingController(text: "");
_passwordController = TextEditingController(text: "");
}
#override
Widget build(BuildContext context){
return Scaffold(
body: SingleChildScrollView(
child: Padding(
padding: const EdgeInsets.all(16.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
const SizedBox(height: 100.0),
Text("Login", style: TextStyle(
fontWeight: FontWeight.bold,
fontSize: 20.0
),),
const SizedBox(height: 20.0),
RaisedButton(
child: Text("Login with Google"),
onPressed: () async {
bool res = await AuthProvider().loginWithGoogle();
if(!res)
print("error logging in with google");
},
),
TextField(
controller: _emailController,
decoration: InputDecoration(
hintText: "Enter email"
),
),
const SizedBox(height: 10.0),
TextField(
controller: _passwordController,
obscureText: true,
decoration: InputDecoration(
hintText: "Enter password"
),
),
const SizedBox(height: 10.0),
RaisedButton(
child: Text("Login"),
onPressed: ()async {
if(_emailController.text.isEmpty || _passwordController.text.isEmpty) {
print("Email and password cannot be empty");
return;
}
bool res = await AuthProvider().signInWithEmail(_emailController.text, _passwordController.text);
if(!res) {
print("Login failed");
}
},
)
],
),
),
),
);
}
}
home
import 'package:authentication/utils/firebase_auth.dart';
import 'package:flutter/material.dart';
class HomePage extends StatelessWidget {
#override
Widget build(BuildContext context){
return Scaffold(
appBar: AppBar(
title: Text('Home Page'),
),
body: SingleChildScrollView(
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
Text("Home page"),
RaisedButton(
child: Text("Log out"),
onPressed: (){
AuthProvider().logOut();
},
)
],
),
),
);
}
}
Log while trying to connect via email and google account
Launching lib\main.dart on Android SDK built for x86 in debug mode...
Initializing gradle...
Resolving dependencies...
Running Gradle task 'assembleDebug'...
Built build\app\outputs\apk\debug\app-debug.apk.
Installing build\app\outputs\apk\app.apk...
Syncing files to device Android SDK built for x86...
D/EGL_emulation(12507): eglMakeCurrent: 0x9d385540: ver 2 0 (tinfo 0x9d383480)
D/EGL_emulation(12507): eglMakeCurrent: 0xa67b2940: ver 2 0 (tinfo 0x86e94740)
I/zygote (12507): Do partial code cache collection, code=29KB, data=21KB
I/zygote (12507): After code cache collection, code=28KB, data=21KB
I/zygote (12507): Increasing code cache capacity to 128KB
D/EGL_emulation(12507): eglMakeCurrent: 0xa67b2940: ver 2 0 (tinfo 0x86e94740)
I/flutter (12507): PlatformException(exception, Unknown, null)
I/flutter (12507): error logging in with google
D/EGL_emulation(12507): eglMakeCurrent: 0xa67b2940: ver 2 0 (tinfo 0x86e94740)
I/zygote (12507): Do partial code cache collection, code=61KB, data=42KB
I/zygote (12507): After code cache collection, code=60KB, data=42KB
I/zygote (12507): Increasing code cache capacity to 256KB
I/BiChannelGoogleApi(12507): [FirebaseAuth: ] getGoogleApiForMethod() returned Gms: com.google.firebase.auth.api.internal.zzao#d9d6493
D/FirebaseAuth(12507): Notifying id token listeners about user ( LnyMICjEyJNjtqKlCo5Qd8gAqva2 ).