React-Native 开发 在react-native 中 运用 redux

Posted 2020-09-06

前提： 一个小web前端，完全不会android 跟ios 的开发，首次接触，有很多不懂的问题。请见谅。

环境： win7

 

上一篇 ： React-Native 开发（一） Android环境部署，Hello react-native

1、目录结构

 

 

入口文件为 main.js、之所以不在 index.android.js 直接写 是因为本来 react-native 就是一套代码，运用在android 跟 iOS 平台上，所以只需要一个入口文件，分别在两个其他的文件中引入改入口文件就可以啦。

 

api 文件夹中放的是 请求接口的代码

 

component 文件夹中放置组件

 

config 中放置的是项目的相关配置

 

redux 文件夹中 分别用 actions / reducers / store 文件夹 放置 redux 的三个东西。

 

2、定义action

 

其中一个action

var courseInitState = {
    courseList: [],
    loading: true,
};

 

3、把reducer分类，分别定义在不同的文件

 

其中一个reducer 

export default function (state = courseInitState, action) {

    switch (action.type) {
        
        case ‘GET_COURSE_LIST‘: 
            return {...state, courseList: action.courseList};

        case ‘COURSE_LOADING‘: 
            return {...state, loading: action.loading}
        default:
            return state;
    }
}

 

4、把reducers 在同一个文件内引入，并且合并

 

import { combineReducers } from ‘redux‘;
import previewReducer from ‘./preview‘;
import courseReducer from ‘./course‘;
import groupReducer from ‘./group‘;
import headReducer from ‘./head‘;
import videoRedecer from ‘./video‘;

var reducers = combineReducers({
    previewReducer: previewReducer,
    courseReducer: courseReducer,
    groupReducer: groupReducer,
    headReducer: headReducer,
    videoRedecer: videoRedecer
});

export default reducers

 

5、传入 reducer 初始化 store

 

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



var store = createStore(
    reducers,
    compose(
        applyMiddleware(thunk)
    )
)

export default store;

 

 

6、在main 文件中引入 store

 

import React, { Component } from ‘react‘;
import { Provider } from ‘react-redux‘;
import PreviewList from ‘./component/PreviewList‘;
import stores from ‘./redux/store‘;
import GroupList from ‘./component/GroupList‘;
import Nav from ‘./component/Nav‘;
import {
  StyleSheet,
  View,
  Text,
} from ‘react-native‘;
const store = stores;

function render() {
    return (
      <Provider store = { store }>
        <Nav />
      </Provider>
    );
  }

store.subscribe(function(){
    render();
});

export default render

 

 7、在入口文件 index.android.js 文件中注册一个app

 

import { AppRegistry } from ‘react-native‘;
import main from ‘./main‘;


AppRegistry.registerComponent(‘AwesomeProject‘, () => main);