您需要等待摄像头初始化为错误状态。根据视觉摄像头文档，您可以传递一个函数给onInitialized prop，并在调用该函数时开始拍摄快照。您可以通过存储一个默认值为false的布尔状态，在onInitialized prop回调函数中将该状态的值设置为true，以及在调用takeSnapshot方法之前在snapShotTaker函数中检查该状态的值是否为真。

import React, {useRef, useState, useEffect} from 'react';
import {
  Button,
  PermissionsAndroid,
  SafeAreaView,
  StatusBar,
  StyleSheet,
  Text,
  View,
  LoadingView,
  ActivityIndicator,
  Image,
  TouchableOpacity,
} from 'react-native';
import {useCameraDevices, Camera} from 'react-native-vision-camera';
import {useIsForeground} from './hooks/useIsForeground';
import RNFS from 'react-native-fs';
import notifee, {AndroidColor} from '@notifee/react-native';

const HelloWorldApp = () => {
  const isAppForeground = useIsForeground();
  console.log('In Foreground?: ', isAppForeground);

  const cameraRef = useRef(null);
  const [finalPath, setPhotoPath] = useState('');

  // Store a boolean state to indicate if the camera is ready
  const [isCameraReady, setIsCameraReady] = useState(false);

  const devices = useCameraDevices();
  const device = devices.front;

  useEffect(() => {
    console.log('useEffect');
    notifee.registerForegroundService(() => {
      console.log('registerForegroundService');
      return new Promise(() => {
        setInterval(() => {
          console.log('setInterval');
          const snapShotTaker = async () => {
            // Run the takeSnapshot method only if the camera is ready
            if (isCameraReady) {
              const snapshot = await cameraRef.current.takeSnapshot({
                quality: 20,
                skipMetadata: true,
              });
              console.log(snapshot);
              //const path = RNFS.ExternalDirectoryPath + '/photo-X.jpg';
              //await RNFS.moveFile(snapshot.path, path);
              setPhotoPath('file://' + snapshot.path);
              console.log(finalPath);
            }
          };
          snapShotTaker();
        }, 2000);
      });
    });
  }, []);

  if (device == null) {
    return <ActivityIndicator style={styles.indicator} size="large" />;
  }

  async function onDisplayNotification() {
    // Request permissions (required for iOS)
    await notifee.requestPermission();

    // Create a channel (required for Android)
    const channelId = await notifee.createChannel({
      id: 'default',
      name: 'Default Channel',
    });

    // Display a notification
    await notifee.displayNotification({
      title: 'Foreground service',
      body: 'This notification will exist for the lifetime of the service runner',
      android: {
        channelId,
        asForegroundService: true,
        color: AndroidColor.RED,
        colorized: true,
      },
    });
  }

  return (
    <View style={styles.container}>
      <Camera
        ref={cameraRef}
        style={styles.camera}
        device={device}
        isActive={true}

        // Set the camera to ready once it's initialized
        onInitialized={() => setIsCameraReady(true)}
      />
      <Image
        source={{uri: finalPath + '?' + new Date()}}
        style={[styles.image]}
      />

      <TouchableOpacity style={styles.button} onPress={onDisplayNotification}>
        <Text>Start F Service</Text>
      </TouchableOpacity>
    </View>
  );
};