Firebase currentUser 和 onAuthStateChanged

Question

我正在使用 React Native 开发一个应用程序，每次我在 onAuthStateChanged 和 currentUser 中的模拟器上从 firebase 刷新应用程序时，我都会得到 null。

我读过有关等待 onAuthStateChanged 以获取状态更新的信息，但我从未这样做过，所以我想我配置错误了。

我正在使用 expo 44、react 17、firebase 9.6.5，但处于兼容模式（稍后计划完全迁移）

我第一次尝试解决方案是尝试添加持久性：firebase.auth().setPersistence(firebase.auth.Auth.Persistence.LOCAL);

import firebase from "firebase/compat/app";
import "firebase/compat/auth";
import "firebase/compat/firestore";
import "firebase/compat/functions";
import "firebase/compat/storage";
import AsyncStorage from "@react-native-async-storage/async-storage";

import { firebaseConfig } from "./firebase/firebaseConfig";

firebase.initializeApp(firebaseConfig);

firebase.firestore();
firebase.functions();
firebase.storage();
firebase.auth();

firebase.auth().setPersistence(firebase.auth.Auth.Persistence.LOCAL);
firebase.auth().onAuthStateChanged(async (user) => {
    console.log("onAuthStateChanged called: ", user);
    if (user) {
        await AsyncStorage.setItem('@isLoggedIn', '1');
    } else {
        await AsyncStorage.setItem('@isLoggedIn', '0');
    }
});

export default firebase;

但是我得到一个错误：

undefined is not an object (evaluating 'this.storage.setItem')
at node_modules/@firebase/auth/dist/esm2017/index-cff4f2fd.js:5248:0 in verifyBeforeUpdateEmail
at node_modules/@firebase/auth/dist/esm2017/index-cff4f2fd.js:5420:12 in _fromIdTokenResponse
at http://127.0.0.1:19000/node_modules/expo/AppEntry.bundle?platform=ios&dev=true&hot=false&minify=false:183132:41 in _set
at node_modules/@firebase/auth/dist/esm2017/index-cff4f2fd.js:1414:55 in newData.some$argument_0
at node_modules/@firebase/auth/dist/esm2017/index-cff4f2fd.js:2060:1 in <global>
at node_modules/@firebase/auth/dist/esm2017/index-cff4f2fd.js:2047:30 in _isIOS
at node_modules/@firebase/auth/dist/esm2017/index-cff4f2fd.js:1890:4 in PersistenceUserManager.create
at node_modules/@firebase/auth/dist/esm2017/index-cff4f2fd.js:1890:4 in PersistenceUserManager.create

登录我使用：

userCredential = firebase
          .auth()
          .signInWithEmailAndPassword(data.email, this.state.password);

Answer 1

我遇到了完全相同的问题。我通过将 "firebase": "^8.9.1" 添加到 package.json、运行 yarn install 并更改导入 import firebase from "firebase" （删除所有其他导入）来解决它。显然选择性导入在 v8 中有一个错误，但至少它运行良好:)

Firebase currentUser 和 onAuthStateChanged

Firebase currentUser and onAuthStateChanged

javascript

firebase

react-native

firebase-authentication