56 lines
1.3 KiB
Dart
56 lines
1.3 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:firebase_auth/firebase_auth.dart';
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import 'package:provider/provider.dart';
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class AuthState extends ChangeNotifier {
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FirebaseAuth auth = FirebaseAuth.instance;
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User? _user;
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User? get user => _user;
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AuthState() {
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auth.authStateChanges().listen((User? user) {
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if (user == null) {
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print('User is currently signed out!');
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_user = null;
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} else {
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print('User is signed in!');
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_user = user;
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}
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notifyListeners();
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});
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}
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Future<void> signInAnonymously() async {
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try {
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await auth.signInAnonymously();
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} catch (e) {
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print(e);
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}
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}
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Future<void> signOut() async {
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await auth.signOut();
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}
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}
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class AnonymAuthScreen extends StatelessWidget {
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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body: Center(
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child: Consumer<AuthState>(
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builder: (context, authState, child) {
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return ElevatedButton(
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onPressed: authState.user == null
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? authState.signInAnonymously
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: authState.signOut,
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child: Text(authState.user == null ? 'Anonym anmelden' : 'Abmelden'),
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);
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},
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),
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),
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);
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}
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}
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