我在SO上看到了很多关于这个问题的问题，但没有一个得到解答（或者解决方案不起作用），我不知道为什么。人们不断遇到这个错误，但没有提供解决方案。从过去的几天开始，我什至遇到了这个错误（注意：它似乎在我的物理设备上运行良好（不是在调试时，只有当我释放它时它才起作用），但在 android 模拟器上却不起作用，所以我'我很确定我的互联网工作正常）：
Setting a timer for a long period of time, i.e. multiple minutes, is a performance and correctness issue on Android as it keeps the timer module awake, and timers can only be called when the app is in the foreground. See https://github.com/facebook/react-native/issues/12981 for more info.
(Saw setTimeout with duration 3052257ms)
Authorization status: 1
[2022-02-09T07:05:26.500Z] @firebase/firestore: Firestore (9.6.5): Could not reach Cloud Firestore backend. Backend
didn't respond within 10 seconds.
This typically indicates that your device does not have a healthy Internet connection at the moment. The client will
operate in offline mode until it is able to successfully connect to the backend.
Authorization status: 1
[2022-02-09T07:08:44.688Z] @firebase/firestore: Firestore (9.6.5): Connection WebChannel transport errored: me {
"defaultPrevented": false,
"g": Y {
"A": true,
"J": null,
"R": [Circular],
"g": $d {
"$": true,
"$a": 2,
"A": 3,
"B": null,
"Ba": 12,
"C": 0,
"D": "gsessionid",
"Da": false,
"Ea": Dd {
"g": Cd {},
},
... & so on...
Package.json：
"@react-native-firebase/app": "^14.3.1",
"@react-native-firebase/messaging": "^14.3.1",
"@react-native-google-signin/google-signin": "^7.0.4",
"expo": "~44.0.0",
"firebase": "^9.6.3",
身份验证和消息传递似乎工作正常，但我认为来自 firestore 的
dbfirebase.tsximport { initializeApp } from "firebase/app";
import { getAuth } from "firebase/auth";
import { getFirestore } from "firebase/firestore";
const firebaseConfig = {
apiKey: "",
authDomain: "",
databaseURL: "",
projectId: "",
storageBucket: "",
messagingSenderId: "",
appId: "",
measurementId: "",
};
const app = initializeApp(firebaseConfig);
const auth = getAuth(app);
const db = getFirestore(app);
export { auth, db };
到目前为止我尝试过的：
更改本答案中提到的 firestore 数据库规则：https://stackoverflow.com/a/70980383/11685381
使用此解决方法：https://github.com/firebase/firebase-js-sdk/issues/5667#issuecomment-952079600
根据此答案，我没有使用任何
.env擦除android模拟器数据，然后冷启动。没成功。
将
firebase-9.6.3firebase-9.6.6清理了构建文件夹，yarn 再次安装了所有包。没成功。
任何人都可以为这个问题提供任何可行的解决方案吗？ 谢谢！
编辑-1：
我特别调用 firestore db 的代码：
在我的 HomeScreen.tsx 中：
import { doc, setDoc, onSnapshot, collection } from "firebase/firestore";
import { db } from "../../../firebase";
// inside functional component
useEffect(() => {
const addUser = () => {
const path = doc(db, "Users", user.uid);
const data = {
_id: user.uid,
name: user.displayName,
email: user.email,
};
setDoc(path, data)
.then(() => {
console.log("User added to db");
})
.catch((err) => {
console.log("Error while adding user to firestore: ", err);
});
};
addUser();
}, []);
useEffect(() => {
const unsub = onSnapshot(collection(db, "Items"), (snapshot) =>
setItems(snapshot.docs.map((doc) => doc.data()))
);
return () => unsub();
}, []);
// so nothing is being displayed here as firestore is not working.
经过大量搜索后，我自己找到了解决方案。尽管我必须从头开始创建一个新的裸 React Native 项目，即使在那时我也遇到了这个错误，但那时我确实对 Firebase 失去了希望。然后过了一段时间我将我的
firebaseimport {initializeApp} from 'firebase/app';
import {getAuth} from 'firebase/auth';
import {initializeFirestore} from 'firebase/firestore';
const firebaseConfig = {
apiKey: '',
authDomain: '',
projectId: '',
storageBucket: '',
messagingSenderId: '',
appId: '',
measurementId: '',
};
// Initialize Firebase
const app = initializeApp(firebaseConfig);
const auth = getAuth(app);
const db = initializeFirestore(app, {
experimentalForceLongPolling: true,
});
export {auth, db};
我必须如上所述更改
db谢谢大家的帮助！
这件事也发生在我身上。我在互联网上找到了很多解决方案，以及所有 6 个解决方案。注意到有帮助。我在我的 firestore 配置中使用 donenv 文件，然后我摆脱了 donenv 并将变量写入硬编码，然后它开始工作。
首先在 firestore.js 中配置你的数据库
import firebase, { initializeApp, getApps, getApp } from "firebase/app";
import { getFirestore } from "firebase/firestore";
let app;
if (getApps().length === 0) {
app = initializeApp(firebaseConfig);
} else {
app = getApp();
}
const db = getFirestore(app);
export { db, auth };
然后通过以下方式将集合添加到 fireStore DB：
import {db} from "../firebase.js";
import { collection, addDoc } from "firebase/firestore";
const docRef = await addDoc(collection(db, "chats"), {
chatName: input
}).then(() => {
navigation.goBack();
}).catch((error) => alert(error) );
2023 年编辑版本：我询问了聊天 GPT，这种格式有效。完成这些更改后重新启动服务器
import firebase from "firebase/compat/app";
import "firebase/compat/auth";
import "firebase/compat/firestore";
const firebaseConfig = {
apiKey: "",
authDomain: "",
projectId: "",
storageBucket: "",
messagingSenderId: "",
appId: "",
measurementId: "",
};
if (!firebase.apps.length) {
firebase.initializeApp(firebaseConfig);
}
const db = firebase.firestore();
const settings = { timestampsInSnapshots: true };
db.settings(settings);
// Enable experimentalForceLongPolling for Firestore
const firestoreConfig = {
experimentalForceLongPolling: true,
};
const firestore = firebase.firestore(firebase.app());
firestore.settings(firestoreConfig);
export { firebase, db };
también estoy Experimentando este error
const db = 初始化Firestore(app, { 实验性的ForceLongPolling：true， });
la forma de iniciar db lo usas alone para el desarrollo o también lo dejaste para producción?