一：左右联动List,在工作中很常见。
今天分享一个同事写的例子，本人只做了简单修改。
注意：本例子必须修改源码，参考本文第三条。
二：Coding
ParcelPage.js:
import React, { Component } from 'react';
import {
AppRegistry,
StyleSheet,
Text,
View,
FlatList,
SectionList,
Dimensions,
TouchableOpacity,
Image,
} from 'react-native';
import ParcelData from './ParcelData.json'
var { width, height } = Dimensions.get('window');
let Headers = [];
export default class ParcelPage extends Component {
static navigationOptions = ({ navigation }) => ({
headerTitle : '联动List',
});
componentDidMount() {
ParcelData.map((item, i) => {
Headers.push(item.section);
});
};
componentWillUnmount() {
Headers = [];
};
renderLRow = (item) => {
return (
<TouchableOpacity style={[ styles.lItem, {backgroundColor: item.index == this.state.cell "htmlcode">
[
{
"section" : "热销",
"data" : [
{
"name" : "蟹黄汤包",
"sale" : "月售875",
"favorite" : "赞31",
"money" : "20",
"img":"http://p1.meituan.net/deal/__39230311__3449301.jpg"
},
{
"name" : "小馄饨",
"sale" : "月售875",
"favorite" : "赞31",
"money" : "10",
"img":"http://p1.meituan.net/deal/849d8b59a2d9cc5864d65784dfd6fdc6105232.jpg"
},
{
"name" : "蟹黄汤包+牛杂粉丝汤套餐",
"sale" : "月售875",
"favorite" : "赞31",
"money" : "35",
"img":"http://p0.meituan.net/deal/ed3025663342b126eaae24764704b017136487.jpg"
},
{
"name" : "鸭血粉丝汤",
"sale" : "月售875",
"favorite" : "赞31",
"money" : "15",
"img":"http://p0.meituan.net/deal/ed3025663342b126eaae24764704b017136487.jpg"
}
]
},
{
"section" : "介绍我们",
"data" : [
{
"name" : "慎用差评！任何问题联系我们就可解决哦",
"sale" : "月售1",
"favorite" : "赞0",
"money" : "0",
"img":"http://p1.meituan.net/deal/__39230311__3449301.jpg"
}
]
},
{
"section" : "折扣套餐",
"data" : [
{
"name" : "特色蟹黄汤包+鸭血粉丝汤+果汁套餐",
"sale" : "月售875",
"favorite" : "赞31",
"money" : "50",
"img":"http://p1.meituan.net/deal/__39230311__3449301.jpg"
},
{
"name" : "蟹黄汤包+牛杂粉丝汤套餐",
"sale" : "月售875",
"favorite" : "赞31",
"money" : "35",
"img":"http://p1.meituan.net/deal/849d8b59a2d9cc5864d65784dfd6fdc6105232.jpg"
},
{
"name" : "蟹黄汤包+南瓜粥+果汁套餐",
"sale" : "月售875",
"favorite" : "赞31",
"money" : "10",
"img":"http://p0.meituan.net/deal/ed3025663342b126eaae24764704b017136487.jpg"
},
{
"name" : "金牌蟹黄汤包+紫米粥+柠檬果汁套餐",
"sale" : "月售875",
"favorite" : "赞31",
"money" : "10",
"img":"http://p0.meituan.net/deal/ed3025663342b126eaae24764704b017136487.jpg"
},
{
"name" : "台式卤肉饭+南瓜粥套餐",
"sale" : "月售875",
"favorite" : "赞31",
"money" : "10",
"img":"http://p0.meituan.net/deal/ed3025663342b126eaae24764704b017136487.jpg"
}
]
},
{
"section" : "纯手工汤宝",
"data" : [
{
"name" : "金牌蟹黄汤包",
"sale" : "月售875",
"favorite" : "赞31",
"money" : "10",
"img":"http://p1.meituan.net/deal/__39230311__3449301.jpg"
},
{
"name" : "蟹庭丰特色蟹黄汤包",
"sale" : "月售875",
"favorite" : "赞31",
"money" : "10",
"img":"http://p1.meituan.net/deal/849d8b59a2d9cc5864d65784dfd6fdc6105232.jpg"
},
{
"name" : "蟹黄汤包",
"sale" : "月售875",
"favorite" : "赞31",
"money" : "10",
"img":"http://p0.meituan.net/deal/ed3025663342b126eaae24764704b017136487.jpg"
},
{
"name" : "干贝汤包",
"sale" : "月售875",
"favorite" : "赞31",
"money" : "10",
"img":"http://p0.meituan.net/deal/ed3025663342b126eaae24764704b017136487.jpg"
},
{
"name" : "鲍鱼汤包",
"sale" : "月售875",
"favorite" : "赞31",
"money" : "10",
"img":"http://p0.meituan.net/deal/ed3025663342b126eaae24764704b017136487.jpg"
},
{
"name" : "全家福汤包",
"sale" : "月售875",
"favorite" : "赞31",
"money" : "10",
"img":"http://p0.meituan.net/deal/ed3025663342b126eaae24764704b017136487.jpg"
},
{
"name" : "虾仁汤包",
"sale" : "月售875",
"favorite" : "赞31",
"money" : "10",
"img":"http://p0.meituan.net/deal/ed3025663342b126eaae24764704b017136487.jpg"
}
]
},
{
"section" : "汤、粥类",
"data" : [
{
"name" : "紫米粥",
"sale" : "月售875",
"favorite" : "赞31",
"money" : "10",
"img":"http://p1.meituan.net/deal/__39230311__3449301.jpg"
},
{
"name" : "金丝南瓜粥",
"sale" : "月售875",
"favorite" : "赞31",
"money" : "10",
"img":"http://p1.meituan.net/deal/849d8b59a2d9cc5864d65784dfd6fdc6105232.jpg"
},
{
"name" : "小米粥",
"sale" : "月售875",
"favorite" : "赞31",
"money" : "10",
"img":"http://p0.meituan.net/deal/ed3025663342b126eaae24764704b017136487.jpg"
},
{
"name" : "白粥",
"sale" : "月售875",
"favorite" : "赞31",
"money" : "10",
"img":"http://p0.meituan.net/deal/ed3025663342b126eaae24764704b017136487.jpg"
}
]
},
{
"section" : "面食类",
"data" : [
{
"name" : "鸡汤面",
"sale" : "月售875",
"favorite" : "赞31",
"money" : "10",
"img":"http://p1.meituan.net/deal/__39230311__3449301.jpg"
},
{
"name" : "红烧小排面",
"sale" : "月售875",
"favorite" : "赞31",
"money" : "10",
"img":"http://p1.meituan.net/deal/849d8b59a2d9cc5864d65784dfd6fdc6105232.jpg"
},
{
"name" : "红烧牛肉面",
"sale" : "月售875",
"favorite" : "赞31",
"money" : "10",
"img":"http://p0.meituan.net/deal/ed3025663342b126eaae24764704b017136487.jpg"
}
]
},
{
"section" : "调味小菜",
"data" : [
{
"name" : "肉松",
"sale" : "月售875",
"favorite" : "赞31",
"money" : "10",
"img":"http://p1.meituan.net/deal/__39230311__3449301.jpg"
},
{
"name" : "辣椒包",
"sale" : "月售875",
"favorite" : "赞31",
"money" : "10",
"img":"http://p1.meituan.net/deal/849d8b59a2d9cc5864d65784dfd6fdc6105232.jpg"
},
{
"name" : "泡菜",
"sale" : "月售875",
"favorite" : "赞31",
"money" : "10",
"img":"http://p0.meituan.net/deal/ed3025663342b126eaae24764704b017136487.jpg"
},
{
"name" : "酱黄瓜",
"sale" : "月售875",
"favorite" : "赞31",
"money" : "10",
"img":"http://p0.meituan.net/deal/ed3025663342b126eaae24764704b017136487.jpg"
},
{
"name" : "萝卜干",
"sale" : "月售875",
"favorite" : "赞31",
"money" : "10",
"img":"http://p0.meituan.net/deal/ed3025663342b126eaae24764704b017136487.jpg"
}
]
},
{
"section" : "饮料",
"data" : [
{
"name" : "可乐",
"sale" : "月售875",
"favorite" : "赞31",
"money" : "10",
"img":"http://p1.meituan.net/deal/__39230311__3449301.jpg"
},
{
"name" : "雪碧",
"sale" : "月售875",
"favorite" : "赞31",
"money" : "10",
"img":"http://p1.meituan.net/deal/849d8b59a2d9cc5864d65784dfd6fdc6105232.jpg"
},
{
"name" : "王老吉",
"sale" : "月售875",
"favorite" : "赞31",
"money" : "10",
"img":"http://p0.meituan.net/deal/ed3025663342b126eaae24764704b017136487.jpg"
},
{
"name" : "橙汁",
"sale" : "月售875",
"favorite" : "赞31",
"money" : "10",
"img":"http://p0.meituan.net/deal/ed3025663342b126eaae24764704b017136487.jpg"
}
]
}
]
三：修改源码
1-:SectionList
node_modules/react-native/Libraries/Lists/SectionList.js,代码格式化后大概在187行的位置，修改如下
class SectionList<SectionT: SectionBase<any
extends React.PureComponent<DefaultProps, Props<SectionT>, void> {
props: Props<SectionT>;
static defaultProps: DefaultProps = defaultProps;
render() {
const List = this.props.legacyImplementation "htmlcode">
render() {
return <VirtualizedList
ref={this._captureRef}
{...this.state.childProps} />;
}
_captureRef = (ref) => {
this._listRef = ref;
};
scrollToIndex = (params: { animated"_blank" href="https://github.com/erhutime/React-Navigation-All" rel="external nofollow" >https://github.com/erhutime/React-Navigation-All
2-：下载完成后，修改index.ios.js:入口文件如下：
import App from './jscode/doubleList/App'
AppRegistry.registerComponent('All', () => App);
五：效果图如下：
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。