TypeError:未定义不是对象(正在评估"store.getState")

问题描述

我正在关注构建:使用React Native + Redux的Cryptocurrency Native移动应用教程.

当我在 App.js 中创建我的商店时，该应用程序运行正常

When I create my store in App.js, the app works fine

import { createStore, applyMiddleware, compose } from 'redux';
import devTools from 'remote-redux-devtools';
import React, { Component } from 'react';
import { Platform, View } from 'react-native';
import { Provider } from 'react-redux';
import promise from 'redux-promise';
import thunk from 'redux-thunk';
import logger from 'redux-logger';

import { Header, CryptoContainer } from './src/components';
import rootReducer from './src/reducers';

const middleware = applyMiddleware(thunk, promise, logger);

const Store = createStore(rootReducer, compose(middleware, devTools({
  name: Platform.OS,
  hostname: 'localhost',
  port: 5678
}), ));

export default class App extends Component {
  render() {
    return (
      <Provider store={Store}>
        <View>
          <Header />
          <CryptoContainer />
        </View>
      </Provider>
    );
  }
}

但是当我将存储逻辑移动到新文件 ./src/Store.js ，

but when I move the store logic to a new file ./src/Store.js,

import { Platform } from 'react-native';
import { createStore, applyMiddleware, compose } from 'redux';
import devTools from 'remote-redux-devtools';
import promise from 'redux-promise';
import thunk from 'redux-thunk';
import logger from 'redux-logger';

import rootReducer from './reducers';

const middleware = applyMiddleware(thunk, promise, logger);

const Store = createStore(rootReducer,compose(middleware,devTools({
            name: Platform.OS,
            hostname: 'localhost',
            port: 5678
        }),
    )
);

export default Store;

并在

import React, { Component } from 'react';
import { View } from 'react-native';
import { Provider } from 'react-redux';

import { Header, CryptoContainer } from './src/components';
import { Store } from './src/Store';

export default class App extends Component {
  render() {
    return (
      <Provider store={Store}>
        <View>
          <Header />
          <CryptoContainer />
        </View>
      </Provider>
    );
  }
}

我知道

什么导致我导入 Store.js 时构建( expo start )失败?

What's causing my build (expo start) to fail when I import Store.js?

推荐答案

似乎import语句不正确.应该是:

It seems the import statement is not right. It should be:

import Store from './src/Store';

这篇关于TypeError:未定义不是对象(正在评估"store.getState")的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！