在我的 react native 应用程序中,我使用 redux 来处理Post
对象的状态转换——状态由几个子组件更改。该Post
对象具有 , 等属性,title
用户可以对其进行编辑和保存。name
description
在减速器中我使用 React.addons.update 返回新的状态对象。
主容器视图有 2 个自定义子组件(包装在 TabBarNavigator 中)。
其中一个子组件几乎没有 TextInputs 正在更新状态。
使用记录器中间件和 console.log() 我在父视图的 render() 中看到了新的状态值(通过 this.props.name),但在子视图中没有。
我试图弄清楚为什么更新的状态没有传播到子容器。任何建议都非常感谢。
我正考虑在子容器中手动订阅 redux 存储,但感觉不对
我的代码如下所示:
主视图
const React = require('react-native');
const {
Component,
} = React;
const styles = require('./../Styles');
const MenuView = require('./MenuView');
import Drawer from 'react-native-drawer';
import TabBarNavigator from 'react-native-tabbar-navigator';
import BackButton from '../components/BackButton';
import { bindActionCreators } from 'redux';
import { connect } from 'react-redux';
import * as PostActions from '../actions/Actions';
import {Details} from './Article/Details';
import {ArticleSecondary} from './Article/Secondary';
var update = require('react-addons-update');
import configureStore from '../store/configureStore';
class ArticleMainView extends Component {
constructor(props){
super(props);
//var store = configureStore(props.route.post);
this.state = {
};
}
componentDidMount(){
}
savePost() {
console.log(this.props.post.data);
this.props.navigator.pop();
}
render(){
console.log("ArticleMainView: render(): " + this.props.name);
return(
<TabBarNavigator
ref="navComponent"
navTintColor='#346293'
navBarTintColor='#94c1e8'
tabTintColor='#101820'
tabBarTintColor='#4090db'
onChange={(index)=>console.log(`selected index ${index}`)}>
<TabBarNavigator.Item title='ARTICLE' defaultTab>
<Details ref="articleDetail"
backButtonEvent={ () => {
this.props.navigator.pop();
}}
saveButtonEvent={ () => {
this.savePost();
}}
{...this.props}
/>
</TabBarNavigator.Item>
<TabBarNavigator.Item title='Secondary'>
<ArticleSecondary ref="articleSecondary"
{...this.props}
backButtonEvent={ () => {
this.props.navigator.pop();
}}
saveButtonEvent={ () => {
this.savePost();
}}
/>
</TabBarNavigator.Item>
</TabBarNavigator>
);
}
}
function mapStateToProps(state) {
return {
post: state,
text: state.data.text,
name: state.data.name,
description: state.data.description
};
}
function mapDispatchToProps(dispatch) {
return bindActionCreators(PostActions, dispatch);
}
export default connect(mapStateToProps, mapDispatchToProps)(ArticleMainView);
减速机:
import {Constants} from '../api/Constants';
var update = require('react-addons-update');
export default function postReducer(state, action) {
switch(action.type) {
case Constants.SET_POST_TEXT:
if( state.data.text){
return update(state, {
data: { $merge: {text: action.text }}
});
}else{
return update(state, {
data: { $merge: {text: action.text }}
});
}
break;
case Constants.SET_POST_NAME:
return update(state, {
data: { name: { $set: action.text }}
});
return newO;
break;
case Constants.SET_POST_DESCRIPTION:
return update(state, {
data: { description: { $set: action.text }}
});
break;
default:
return state;
}
}
应用程序的渲染场景:
renderScene(route, navigator) {
switch (route.id) {
case "ArticleMainView":
let store = configureStore(route.post);
delete route.post; // TODO: not sure if I should remove this
return (
<Provider store={store}>
<ArticleMainView navigator={navigator} {...route}/>
</Provider>
);
default:
return <LandingView navigator={navigator} route={route}/>
}
}
配置存储:
import { createStore,applyMiddleware,compose } from 'redux'
import postReducer from '../reducers/SocialPostReducer';
import createLogger from 'redux-logger';
const logger = createLogger();
export default function configureStore(initialState){
return createStore(
postReducer,
initialState,
compose(applyMiddleware(logger))
);
}