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网站建设中提示seosem是指什么意思

news 2025/8/18 10:15:07

网站建设中提示,seosem是指什么意思,济南建站公司哪有,网站服务器更换做过移动开发的同学都应该清楚，侧滑删除是移动开发中的一个常见功能。在官方没提供侧滑组件之前，要实现侧滑效果需要使用第三方库，如react-native-swipe-list-view。不过随着React Native 0.50版本的发布，系统新添加SwipeableFlat…

做过移动开发的同学都应该清楚，侧滑删除是移动开发中的一个常见功能。在官方没提供侧滑组件之前，要实现侧滑效果需要使用第三方库，如react-native-swipe-list-view。不过随着React Native 0.50版本的发布，系统新添加SwipeableFlatList组件，SwipeableFlatList是在FlatList基础上实现的侧滑显示菜单的功能，大大的方便了开发。

SwipeableFlatList支持FlatList的所有的属性和方法，另外它还有三个自己的属性，在使用SwipeableFlatList实现侧滑效果时需要处理这三个属性。

bounceFirstRowOnMount: bool 是一个bool属性，默认是YES，表示第一次是否先滑一下FlatList的Item；
maxSwipeDistance: number 或者 func，必须要赋值，表示向左滑动的最大距离
renderQuickActions：func，必须要赋值，表示滑动显示的内容。

下面让我们实现一个简单的侧滑删除的实例，其效果如下：
这里写图片描述

SwipeableFlatList代码如下：

import React, {Component} from 'react';
import {StyleSheet, Dimensions, View, Alert,Text, TouchableHighlight,Image, SwipeableFlatList
} from 'react-native';import data from '../src/config/data'   //模拟数据const {width} = Dimensions.get('window');export default class SwipeableFlatList extends Component {render() {return (<SwipeableFlatList style={styles.flex}data={data}bounceFirstRowOnMount={true}maxSwipeDistance={160}keyExtractor={this.extraUniqueKey}renderItem={this.renderItemView.bind(this)}renderQuickActions={this.renderQuickActions.bind(this)}/>);}extraUniqueKey(item, index) {return "index" + index + item;}//填充Item CellrenderItemView({item}) {let imageUrl = item.squareimgurl.replace('w.h', '160.0').replace('http', 'https');return (<View style={styles.container}><Image source={{uri: imageUrl}} style={styles.icon}/><View style={styles.rightContainer}><Text>{item.mname}</Text><View></View><Text style={styles.p} numberOfLines={0}>{item.title}</Text><View style={{flex: 1, justifyContent: 'flex-end'}}><Text>{item.price}元</Text></View></View></View>);}//绘制侧滑视图renderQuickActions({item}) {return (<View style={styles.actionsContainer}><TouchableHighlightstyle={styles.actionButton}onPress={() => {Alert.alert('Tips','You could do something with this edit action!',);}}><Text style={styles.actionButtonText}>编辑</Text></TouchableHighlight><TouchableHighlightstyle={[styles.actionButton, styles.actionButtonDestructive]}onPress={() => {Alert.alert('删除'+item.mname,item.title,);}}><Text style={styles.actionButtonText}>删除</Text></TouchableHighlight></View>);}
}conststyles = StyleSheet.create({flex: {flex: 1,width: width,backgroundColor: 'white'},container: {flex: 1,width: width,flexDirection: 'row',padding: 10,borderBottomWidth: 1,borderColor: '#e9e9e9',backgroundColor: 'white',},icon: {width: 80,height: 80,borderRadius: 5,},rightContainer: {flex: 1,paddingLeft: 20,paddingRight: 10,},h1: {fontSize: 15,fontWeight: 'bold',color: '#222222',},p: {fontSize: 13,color: '#777777',marginTop: 8,},actionsContainer: {flex: 1,flexDirection: 'row',justifyContent: 'flex-end',},actionButton: {padding: 10,width: 80,justifyContent: 'center',backgroundColor: '#999999',},actionButtonDestructive: {backgroundColor: '#FF0000',},actionButtonText: {textAlign: 'center',},});

其中模拟的数据内容如下：

export default
[{"rating": 4.6,"range": "150店通用","mname": "吉野家","title": "卤肉饭+乌龙茶（小）1份","price": 10,"squareimgurl": "http://p0.meituan.net/w.h/deal/5911c9d9235036c6fc11fcb1dbcb5bce27954.jpg@87_0_266_266a%7C267h_267w_2e_100Q",},{"rating": 4.4,"range": "北京等","mname": "真功夫","title": "冬(香)菇鸡腿肉饭\t+\t卤蛋1份","price": 15,"squareimgurl": "http://p1.meituan.net/w.h/deal/15c8885d14f18774938a88752f08bb1e49194.jpg@118_0_466_466a%7C267h_267w_2e_90Q",},{"rating": 4.2,"range": "46店通用","mname": "京八珍","title": "50元代金券1张，可叠加","price": 65,"squareimgurl": "http://p0.meituan.net/w.h/deal/d57d5f0644256a3013469edfc1406e8022163.jpg",},{"rating": 4.2,"range": "2店通用","mname": "麻里麻里","title": "2人餐，提供免费WiFi","price": 78,"squareimgurl": "http://p0.meituan.net/w.h/deal/f436e044254128059f055f2275eadbb837054.jpg",},{"rating": 4.4,"range": "2店通用","mname": "东来顺饭庄","title": "4-5人套餐，百年老字号","price": 168,"squareimgurl": "http://p0.meituan.net/w.h/deal/416d01cbc4b8a2871b3c260615b5998088199.jpg",},{"rating": 4.2,"range": "12店通用","mname": "果麦de鲜饮创作","title": "饮品3选1，提供免费WiFi","price": 7.99,"squareimgurl": "http://p1.meituan.net/w.h/deal/d72d34a7038e8cca2d09406ec7dc5c83133480.jpg@0_297_1332_1332a%7C267h_267w_2e_90Q",},{"rating": 4,"range": "4店通用","mname": "夹拣成厨麻辣烫","title": "50元代金券1张，可叠加","price": 39,"squareimgurl": "http://p1.meituan.net/w.h/deal/712801d4f3562706f596cd366376889f25073.jpg@71_0_444_444a%7C267h_267w_2e_90Q",},{"rating": 4.6,"range": "150店通用","mname": "吉野家","title": "卤肉饭+乌龙茶（小）1份","price": 10,"squareimgurl": "http://p0.meituan.net/w.h/deal/5911c9d9235036c6fc11fcb1dbcb5bce27954.jpg@87_0_266_266a%7C267h_267w_2e_100Q",},{"rating": 4.4,"range": "北京等","mname": "真功夫","title": "冬(香)菇鸡腿肉饭\t+\t卤蛋1份","price": 15,"squareimgurl": "http://p1.meituan.net/w.h/deal/15c8885d14f18774938a88752f08bb1e49194.jpg@118_0_466_466a%7C267h_267w_2e_90Q",},{"rating": 4.2,"range": "46店通用","mname": "京八珍","title": "50元代金券1张，可叠加","squareimgurl": "http://p0.meituan.net/w.h/deal/d57d5f0644256a3013469edfc1406e8022163.jpg",},{"rating": 4.2,"range": "2店通用","mname": "麻里麻里","title": "2人餐，提供免费WiFi","price": 78,"squareimgurl": "http://p0.meituan.net/w.h/deal/f436e044254128059f055f2275eadbb837054.jpg",},{"rating": 4.4,"range": "2店通用","mname": "东来顺饭庄","title": "4-5人套餐，百年老字号","price": 168,"squareimgurl": "http://p0.meituan.net/w.h/deal/416d01cbc4b8a2871b3c260615b5998088199.jpg",},{"rating": 4.2,"range": "12店通用","mname": "果麦de鲜饮创作","title": "饮品3选1，提供免费WiFi","price": 7.99,"squareimgurl": "http://p1.meituan.net/w.h/deal/d72d34a7038e8cca2d09406ec7dc5c83133480.jpg@0_297_1332_1332a%7C267h_267w_2e_90Q",},{"rating": 4,"range": "4店通用","mname": "夹拣成厨麻辣烫","title": "50元代金券1张，可叠加","price": 39,"squareimgurl": "http://p1.meituan.net/w.h/deal/712801d4f3562706f596cd366376889f25073.jpg@71_0_444_444a%7C267h_267w_2e_90Q",},
]