Flutter firebase_ui_auth的RegisterScreen()未触发AuthStateChangeAction事件。

huangapple
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英文:

Flutter firebase_ui_auth RegisterScreen() does not trigger AuthStateChangeAction event

问题

AuthStateChangeAction事件在注册期间从不触发 - 无论是使用RegisterScreen()还是SignInScreen()

  1. import 'package:firebase_auth/firebase_auth.dart' hide EmailAuthProvider;
  2. import 'package:firebase_core/firebase_core.dart';
  3. import 'package:firebase_ui_auth/firebase_ui_auth.dart';
  4. import 'package:flutter/material.dart';
  6. import 'firebase_options.dart';
  8. Future<void> main() async {
  9.   WidgetsFlutterBinding.ensureInitialized();
  10.   await Firebase.initializeApp(
  11.     options: DefaultFirebaseOptions.currentPlatform,
  12.   );
  13.   runApp(const MyApp());
  14. }
  16. class MyApp extends StatelessWidget {
  17.   const MyApp({super.key});
  19.   @override
  20.   Widget build(BuildContext context) {
  21.     return MaterialApp(
  22.       home: const MyHomePage(),
  23.     );
  24.   }
  25. }
  27. class MyHomePage extends StatefulWidget {
  28.   const MyHomePage({super.key});
  30.   @override
  31.   State<MyHomePage> createState() => _MyHomePageState();
  32. }
  34. class _MyHomePageState extends State<MyHomePage> {
  36.   @override
  37.   Widget build(BuildContext context) {
  38.     return Scaffold(
  39.       appBar: AppBar(),
  40.       body: RegisterScreen(
  41.         providers: [EmailAuthProvider()],
  42.         actions: [
  43.           AuthStateChangeAction<SignedIn>((context, state) {
  44.             print('AuthStateChangeAction()');
  45.           }),
  46.         ],
  47.       ),
  48.       floatingActionButton: IconButton(
  49.         icon: const Icon(Icons.close),
  50.         onPressed: () async {
  51.           print('FirebaseAuth.instance.signOut()');
  52.           await FirebaseAuth.instance.signOut();
  53.         },
  54.       ),
  55.     );
  56.   }
  57. }

原生FirebaseAuth事件通常会触发，可以使用，但在登录情况下，AuthStateChangeAction以期望的方式触发。

这可能作为一种解决方法：

  1. @override
  2. void initState() {
  3.   super.initState();
  4.   FirebaseAuth.instance.authStateChanges().listen((user) {
  5.     print('FirebaseAuth.instance.authStateChanges()');
  6.   });
  7. }
英文:

AuthStateChangeAction event is never triggered during registration - both in case of using RegisterScreen() and SignInScreen()

  1. import &#39;package:firebase_auth/firebase_auth.dart&#39; hide EmailAuthProvider;
  2. import &#39;package:firebase_core/firebase_core.dart&#39;;
  3. import &#39;package:firebase_ui_auth/firebase_ui_auth.dart&#39;;
  4. import &#39;package:flutter/material.dart&#39;;
  6. import &#39;firebase_options.dart&#39;;
  8. Future&lt;void&gt; main() async {
  9.   WidgetsFlutterBinding.ensureInitialized();
  10.   await Firebase.initializeApp(
  11.     options: DefaultFirebaseOptions.currentPlatform,
  12.   );
  13.   runApp(const MyApp());
  14. }
  16. class MyApp extends StatelessWidget {
  17.   const MyApp({super.key});
  19.   @override
  20.   Widget build(BuildContext context) {
  21.     return MaterialApp(
  22.       home: const MyHomePage(),
  23.     );
  24.   }
  25. }
  27. class MyHomePage extends StatefulWidget {
  28.   const MyHomePage({super.key});
  30.   @override
  31.   State&lt;MyHomePage&gt; createState() =&gt; _MyHomePageState();
  32. }
  34. class _MyHomePageState extends State&lt;MyHomePage&gt; {
  36.   @override
  37.   Widget build(BuildContext context) {
  38.     return Scaffold(
  39.       appBar: AppBar(),
  40.       body: RegisterScreen(
  41.         providers: [EmailAuthProvider()],
  42.         actions: [
  43.           AuthStateChangeAction&lt;SignedIn&gt;((context, state) {
  44.             print(&#39;AuthStateChangeAction()&#39;);
  45.           }),
  46.         ],
  47.       ),
  48.       floatingActionButton: IconButton(
  49.         icon: const Icon(Icons.close),
  50.         onPressed: () async {
  51.           print(&#39;FirebaseAuth.instance.signOut()&#39;);
  52.           await FirebaseAuth.instance.signOut();
  53.         },
  54.       ),
  55.     );
  56.   }
  57. }

Native FirebaseAuth events are fired normally and they could be used but in case of Signing-in the AuthStateChangeAction is fired in desired way.

This might work as work-around:

  1. @override
  2. void initState() {
  3.   super.initState();
  4.   FirebaseAuth.instance.authStateChanges().listen((user) {
  5.     print(&#39;FirebaseAuth.instance.authStateChanges()&#39;);
  6.   });
  7. }

答案1

得分: 1

有两个单独的处理程序分别处理'SignedIn'和'UserCreated'事件。
第二个处理程序改变了身份验证状态，但不触发'SignedIn'事件。
看起来像这样工作：

  1. actions: [
  2.   AuthStateChangeAction<SignedIn>((context, state) {
  3.     print('AuthStateSignedIn');
  4.   }),
  5.   AuthStateChangeAction<UserCreated>((context, state) {
  6.     print('AuthStateUserCreated');
  7.   }),
  8. ],
英文:

There is separate handler for 'SignedIn' and 'UserCreated' events.
The second is changing auth state but does not fire SignedIn event.
It looks like this works:

  1.     actions: [
  2.       AuthStateChangeAction&lt;SignedIn&gt;((context, state) {
  3.         print(&#39;AuthStateSignedIn&#39;);
  4.       }),
  5.       AuthStateChangeAction&lt;UserCreated&gt;((context, state) {
  6.         print(&#39;AuthStateUserCreated&#39;);
  7.       }),
  8.     ],

huangapple
  • 本文由 发表于 2023年1月9日 18:40:14
  • 转载请务必保留本文链接：https://go.coder-hub.com/75056070.html
  • firebase-authentication
  • firebaseui
  • flutter
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