flutter firebase
import 'package:firebase_auth/firebase_auth.dart';
import 'package:google_sign_in/google_sign_in.dart';
class GoogleAuth {
final FirebaseAuth _auth = FirebaseAuth.instance;
final GoogleSignIn googleSignIn = GoogleSignIn();
User getUser() {
return _auth.currentUser;
}
Future<String> getUserId() async {
final User user = _auth.currentUser;
final uid = user.uid;
return uid;
}
Future<User> signInWithGoogle() async {
final GoogleSignInAccount googleSignInAccount = await googleSignIn.signIn();
final GoogleSignInAuthentication googleSignInAuthentication =
await googleSignInAccount.authentication;
final AuthCredential credential = GoogleAuthProvider.credential(
accessToken: googleSignInAuthentication.accessToken,
idToken: googleSignInAuthentication.idToken,
);
final UserCredential authResult =
await _auth.signInWithCredential(credential);
final User user = authResult.user;
assert(!user.isAnonymous);
assert(await user.getIdToken() != null);
final User currentUser = _auth.currentUser;
assert(user.uid == currentUser.uid);
print('signInWithGoogle succeeded: $user');
return currentUser;
}
void signOutGoogle() async {
await googleSignIn.signOut();
print("User Sign Out");
}
}
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$ dart pub add firebase
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4.67
6
void createRecord(){ databaseReference.child("1").set({ 'title': 'Mastering EJB', 'description': 'Programming Guide for J2EE' }); databaseReference.child("2").set({ 'title': 'Flutter in Action', 'description': 'Complete Programming Guide to learn Flutter' });}
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4
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dependencies: flutter: sdk: flutter firebase_database: 1.0.3
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3.9
10
StreamBuilder(
stream: _firebaseRef.onValue,
builder: (context, snap) {
if (snap.hasData && !snap.hasError && snap.data.snapshot.value != null) {
Map data = snap.data.snapshot.value;
List item = [];
data.forEach((index, data) => item.add({"key": index, ...data}));
return ListView.builder(
itemCount: item.length,
itemBuilder: (context, index) {
return ListTile(
title: Text(item[index]['message']),
trailing: Text(DateFormat("hh:mm:ss")
.format(DateTime.fromMicrosecondsSinceEpoch(
item[index]['timestamp'] * 1000))
.toString()),
onTap: () =>
updateTimeStamp(item[index]['key']),
onLongPress: () =>
deleteMessage(item[index]['key']),
);
},
);
}
else
return Text("No data");
},
)
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