设置从react-native-location到状态变量的取消订阅问题

import React, { useState, useEffect } from 'react';
import { PermissionsAndroid } from 'react-native';
import Geolocation from 'react-native-location';

const [location, setLocation] = useState(null);

useEffect(() => {
  const requestLocationPermission = async () => {
    try {
      const granted = await PermissionsAndroid.request(
        PermissionsAndroid.PERMISSIONS.ACCESS_FINE_LOCATION,
        {
          title: 'Location Permission',
          message: 'This app needs access to your location.',
          buttonNeutral: 'Ask Me Later',
          buttonNegative: 'Cancel',
          buttonPositive: 'OK',
        },
      );
      if (granted === PermissionsAndroid.RESULTS.GRANTED) {
        Geolocation.configure({
          distanceFilter: 100, // 更新位置的最小距离（米）
        });
        const subscription = Geolocation.subscribeToLocationUpdates(
          (location) => {
            setLocation(location);
          },
        );
        return () => {
          subscription.unsubscribe(); // 取消订阅
        };
      } else {
        console.log('Location permission denied');
      }
    } catch (err) {
      console.warn(err);
    }
  };

  requestLocationPermission();
}, []);