Question

我收到了错误消息

“undefined不是一个对象（评估'CategoryAction2.default.categoryView'）”执行下面的代码，

ConfigureStore.js：

import {createStore, applyMiddleware} from 'redux';
import reducers from '../reducers';
import thunk from 'redux-thunk';

var middlewares = applyMiddleware(thunk);

export default function configureStore(initialState) {
  return createStore(reducers, initialState, middlewares);
}

CategoryContainer.js：

import React, { Component } from 'react';
import stores from '../stores/ConfigureStore';
import CategoryAction from '../actions/CategoryAction';

stores.dispatch(CategoryAction.categoryView());

class CategoryContainer extends Component {
}

CategoryAction.js

import * as actionTypes from './ActionTypes';
import AppConstants from '../constants/AppConstants';

export function categoryView() {
  const categories = ['Health', 'Built-in'];
  return {
      type: "CATEGORY_VIEW",
      categories: categories
  };
}

CategoryReducer.js：

const initialState = {
  categories:[],
}

export default function categoryReducer (state = initialState, action) {
  switch (action.type) {
    case CATEGORY_VIEW:
      return Object.assign({}, state, {
              categories: action.categories
            });
    }
}

CategoryContainer.js中的以下行引发错误消息， stores.dispatch（CategoryAction.categoryView（））;

请协助解决问题。

Answer 1

在CategoryContainer.js中，您需要导入CategoryActions.js的特定成员（或所有成员）。应该是以下两个选项之一：

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React Native-Redux错误：undefined不是对象（评估

1 个答案: