我對原生和 Redux 的反應很陌生，特別是我收到了一條我真的很難處理的錯誤消息。這是我收到的錯誤TypeError：未定義不是對象（評估 '(0, _reactRedux.useSelector)(function (state) { return state.myPigeons.myPigeons; }).length'）我將在這里向您展示迄今為止我得到的所有相關代碼，然后解釋我這一切背后的意圖。主屏.jsPigeon.js（動作）export const ADD_PIGEON = 'ADD_PIGEON';export const addPigeon = () => {    return {type: ADD_PIGEON}};Pigeon.js（減速器）import {ALLPIGEONS} from '../../data/pigeons_data';import { ADD_PIGEON } from '../actions/pigeon';const initialPigeonState = () => {    myPigeons = []};const pigeonReducer = (state = initialPigeonState, action) => {    switch(action.type){        case ADD_PIGEON:{            var generatedPigeon = Math.floor(Math.random() * ALLPIGEONS.length);            generatedPigeon.nickname = "Kuba";            var updatedPigeons = [...state.myPigeons, generatedPigeon]            return{...state, myPigeons: updatedPigeons}        }    };    return state;};export default pigeonReducer;鴿子數據.jsimport pigeon from '../models/pigeon';const ALLPIGEONS = [    new pigeon(        1,        "red",        "Red-billed pigeon",        " "    ),    new pigeon(        2,        "blue",        "Blue pigeon",        " "    ),    new pigeon(        3,        "white",        "Release dove",        " "    ),    new pigeon(        4,        "brown",        "Brown cuckoo-dove",        " "    ),    new pigeon(        5,        "green",        "Green pigeon",        " "    ),];export default ALLPIGEONS;應用程序.js//Automatic importsimport { StatusBar } from 'expo-status-bar';import React, {useState} from 'react';import { StyleSheet, Text, View } from 'react-native';import { Provider } from 'react-redux';//My importsimport * as Font from 'expo-font';import {AppLoading} from 'expo';import ReduxThunk from 'redux-thunk';import { createStore, combineReducers, applyMiddleware } from 'redux';這里的問題基本上是我想在 redux 中有一個狀態，其中存儲我所有的鴿子（我的狀態現在應該是空的，因為我沒有向我的狀態添加任何鴿子）并且在我單擊主屏幕中的按鈕后。在 Node.js 中我向狀態添加了一只鴿子，以便文本可以顯示我有多少只鴿子。現在，當我進入主屏幕時，應用程序總是崩潰。我很感謝任何幫助！