我正在嘗試使Redux在React Native應用程序中處理我的路由狀態。我用來處理路由的組件是react-native-router-flux。React使用redux的本地路由:錯誤:預計Reducer是一個函數
我收到的錯誤消息是「預計減速機是功能」。 Here is the full error.我一直有這個問題很長一段時間,不能解決這個問題。我理解越來越多的Redux概念,但現在我不得不尋求幫助。根據閱讀相同問題上的stackoverflow帖子,我發現它可能是一些導出/導入問題,但我和我的項目成員或我的高級開發人員都無法看到它。
現在,我有3個不同的類,包括我的路由器組件的最低設置。請記住,爲了簡單起見,我從我的主文件App.js創建了商店。
集裝箱/ App.js
import React, { Component } from 'react';
import { Provider, connect } from 'react-redux';
import { combineReducers, createStore, applyMiddleware, compose } from 'redux';
import routingReducer, { counter, userReducer } from './../Redux/Reducers';
const RouterWithRedux = connect()(NavigationRouter);
// Combine Reducers
const reducers = combineReducers({
userReducer,
routingReducer,
});
// create store...
const middleware = [/* ...your middleware (i.e. thunk) */];
const store = compose(
applyMiddleware(...middleware))(createStore)(reducers);
export default class App extends Component {
render() {
return (
<Provider store={store}>
<RouterWithRedux />
</Provider>
)
}
}
終極版/ Reducers.js
import { ActionConst } from 'react-native-router-flux';
const routingState= {
scene: [],
};
const userState = {
users: [],
}
// The Routing Reducer
export default function routingReducer(state = routingState, action = {}) {
switch (action.type) {
// focus action is dispatched when a new screen comes into focus
case ActionConst.FOCUS:
return Object.assign({}, state, {
scene: action.scene,
});
// ...other actions
default:
return state;
}
};
// The User Reducer
export function userReducer(state = userState, action = {}) {
switch(action.type) {
case 'USER_LIST_SUCCESS':
return Object.assign({}, state, {
users: action.users
});
}
return state;
};
導航/ MyExportedRouter.js
import React from 'react'
import { Router, Scene, Actions } from 'react-native-router-flux';
import { connect } from 'react-redux';
import SettingsContainer from './../Containers/SettingsContainer'
import LoginWrapper from './../Containers/LoginWrapper'
const myConnectedRouter = connect()(Router);
// TODO: Define Scene keys as "ENUMS": loginScreen -> TO_LOGIN
const scenes = Actions.create(
<Scene key="root">
<Scene initial key='TO_LOGIN' component={ LoginWrapper } title='LaunchScreen' hideNavBar />
<Scene key='TO_SETTINGS_VIEW' component={ SettingsContainer } title='Monthly View' />
</Scene>
);
class MyExportedRouter extends React.Component {
constructor(props) {
super(props);'
};
render() {
return (
<myConnectedRouter scenes={scenes} />
);
}
}
export default MyExportedRouter;
而且記住,反應本地路由器-flux將「THE_KEY」作爲動作發送給Reducers.js中的reducer。這是通過例如一個按鈕onPress =「Actions.THE_KEY」。
我一直在努力,只是簡單地調用createStore(減速),這是行不通的。我不認爲這個問題恰好在這裏,但可能是因爲我的錯誤信息提到它。我真的被困在這一個。 – jeyloh