我有一個可供選擇的“比較器”列表。我想在標題下方顯示一個比較器中的帳戶數(shù)量。我能夠創(chuàng)建一個函數(shù)來獲取帳戶并獲取大小。但是，它只在我第二次加載頁面時有效。如果我第一次加載它，結果總是顯示 0。我如何確保在我第一次加載頁面時，數(shù)據(jù)被正確獲取和加載？import {  SET_COMPARATOR_PRODUCTS_AMOUNT,  GET_COMPARATORS_INSTITUTIONS,  GET_COMPARATOR_ACCOUNTS,} from '../types/Comparators';import Config from 'react-native-config';import {AxiosInstance} from '../api/AxiosInstance';export const getAmount = comparator => dispatch => {  AxiosInstance.get('/comparators/' + comparator, {    headers: {      'X-Comparator-API-KEY': Config.COMPARATOR_API_KEY,      'content-type': 'application/json',    },  }).then(res => {    dispatch({      type: SET_COMPARATOR_PRODUCTS_AMOUNT,      payload: {        comparator: comparator,        amount: res.data.length,      },    });  });};import {  SET_COMPARATOR_PRODUCTS_AMOUNT,  GET_COMPARATORS_INSTITUTIONS,  GET_COMPARATOR_ACCOUNTS,} from '../types/Comparators';const INITIAL_STATE = {  accountsAmount: {},  institutions: [],  accounts: [],};export default (state = INITIAL_STATE, action) => {  switch (action.type) {    case SET_COMPARATOR_PRODUCTS_AMOUNT:      var accountsAmount = state.accountsAmount;      accountsAmount[action.payload.comparator] = action.payload.amount;      return Object.assign({}, state, {accountsAmount: accountsAmount});    case GET_COMPARATORS_INSTITUTIONS:      return {        ...state,        institutions: action.payload,      };    case GET_COMPARATOR_ACCOUNTS:      return {        ...state,        accounts: action.payload,      };    default:      return state;  }};