调用addPushTokenListener时如何取回expo令牌而不是ios令牌？

import { Notifications } from 'expo';
import * as Permissions from 'expo-permissions';

// 请求推送权限
const registerForPushNotifications = async () => {
  const { status: existingStatus } = await Permissions.getAsync(
    Permissions.NOTIFICATIONS
  );
  let finalStatus = existingStatus;

  // 如果权限尚未被授予，则请求权限
  if (existingStatus !== 'granted') {
    const { status } = await Permissions.askAsync(Permissions.NOTIFICATIONS);
    finalStatus = status;
  }

  // 如果权限被授予，则获取Expo令牌
  if (finalStatus === 'granted') {
    const expoToken = await Notifications.getExpoPushTokenAsync();
    console.log(expoToken);
    // 在这里处理Expo令牌
  }
};

// 注册推送令牌监听器
Notifications.addListener(handleNotification);

// 调用函数以获取Expo令牌
registerForPushNotifications();