如何在react native中仅显示来自firestore的登录用户的帖子？

npm install firebase

import firebase from 'firebase/app';
import 'firebase/firestore';

const firebaseConfig = {
  apiKey: 'YOUR_API_KEY',
  authDomain: 'YOUR_AUTH_DOMAIN',
  projectId: 'YOUR_PROJECT_ID',
  storageBucket: 'YOUR_STORAGE_BUCKET',
  messagingSenderId: 'YOUR_MESSAGING_SENDER_ID',
  appId: 'YOUR_APP_ID',
};

if (!firebase.apps.length) {
  firebase.initializeApp(firebaseConfig);
}

export default firebase;

import React, { useEffect, useState } from 'react';
import { View, Text } from 'react-native';
import firebase from './firebaseConfig';

const PostsScreen = () => {
  const [posts, setPosts] = useState([]);

  useEffect(() => {
    const fetchPosts = async () => {
      const currentUser = firebase.auth().currentUser;
      if (currentUser) {
        const postsRef = firebase.firestore().collection('posts');
        const snapshot = await postsRef.where('userId', '==', currentUser.uid).get();
        const fetchedPosts = snapshot.docs.map(doc => doc.data());
        setPosts(fetchedPosts);
      }
    };

    fetchPosts();
  }, []);

  return (
    <View>
      {posts.map(post => (
        <Text key={post.id}>{post.title}</Text>
      ))}
    </View>
  );
};

export default PostsScreen;