React Native商城项目实战16 - 购物中心详细页

逻辑分析： 
首页（Home）加载的购物中心组件（ShopCenter），传递url数据； 
ShopCenter里根据url加载购物中心详细页组件(ShopCenterDetail)， 
ShopCenterDetail中利用WebView展示。

1.Home.js

/**
 * 首页
 */
import React, { Component } from 'react';
import {
    AppRegistry,
    StyleSheet,
    Text,
    View,
    TouchableOpacity,
    TextInput,
    Image,
    Platform,
    ScrollView
} from 'react-native';

var Dimensions = require('Dimensions');
var screenW = Dimensions.get('window').width;
var screenH = Dimensions.get('window').height;

/*======导入外部组件类======*/
var HomeDetail = require('./HomeDetail');
var TopView = require('./HomeTopView');
var MiddleView = require('./HomeMiddleView');
var MiddleBottom = require('./MiddleBottomView');
var ShopCenter = require('./ShopCenter');
var ShopCenterDetail = require('./ShopCenterDetail');

// ES5
var Home = React.createClass({
    render() {
        return (
            <View style={styles.container}>
                {/*首页的导航条*/}
                {this.renderNavBar()}
                {/*首页主要内容*/}
                <ScrollView>
                    {/*头部的View*/}
                   <TopView />
                    {/*中间上部分的view*/}
                    <MiddleView />
                    {/*中间下部分内容*/}
                    <MiddleBottom
                        popTopHome={(data)=>{this.pushToDetail(data)}}
                    />
                    {/*购物中心*/}
                    <ShopCenter
                        popToHomeView={(url)=>this.pushToShopCenterDetail(url)}
                    />
                </ScrollView>
            </View>
        );
    },

    // 首页的导航条
    renderNavBar(){
        return(
            <View style={styles.navBarStyle}>
                <TouchableOpacity onPress={()=>{this.pushToDetail()}} >
                    <Text style={styles.leftTitleStyle}>宁波</Text>
                </TouchableOpacity>
                <TextInput placeholder="输入商家,品类,商圈" style={styles.topInputStyle} />
                <View style={styles.rightNavViewStyle}>
                    <TouchableOpacity onPress={()=>{alert('点击了')}} >
                        <Image source={{uri:'icon_homepage_message'}} style={styles.navRightImgStyle} />
                    </TouchableOpacity>
                    <TouchableOpacity onPress={()=>{alert('点击了')}} >
                        <Image source={{uri:'icon_homepage_scan'}} style={styles.navRightImgStyle} />
                    </TouchableOpacity>
                </View>
            </View>
        )
    },

    // 跳转到首页详细页
    pushToDetail(data){
        this.props.navigator.push({
            component:HomeDetail,   // 要跳转过去的组件
            title:'首页详细页'
        });
    },

    // 跳转到购物中心详细页
    pushToShopCenterDetail(url){
        this.props.navigator.push({
            component:ShopCenterDetail,   // 要跳转过去的组件
            passProps:{'url':this.dealWithImgUrl(url)},  // 传递数据到下一个界面
        });
    },

    // URL处理函数
    dealWithImgUrl(url){
        return url.replace('imeituan://www.meituan.com/web/?url=','');
    },
});

const styles = StyleSheet.create({
    // 导航栏
    navBarStyle:{
        height:Platform.OS === 'ios' ? 64 : 44,
        backgroundColor:'rgba(255,96,0,1)',
        // 主轴方向
        flexDirection:'row',
        // 侧轴对齐方式 垂直居中
        alignItems:'center',
        // 主轴对齐方式
        justifyContent:'space-around', // 平均分布
    },
    // 导航条左侧文字
    leftTitleStyle:{
        color:'white',
        fontSize:16,
    },
    // 导航栏输入框
    topInputStyle:{
        width:screenW * 0.71,
        height:Platform.OS === 'ios' ? 35 : 30,
        backgroundColor:'white',
        marginTop:Platform.OS === 'ios' ? 18 : 0,
        // 圆角
        borderRadius:18,
        paddingLeft:10,
    },
    // 导航条右侧视图
    rightNavViewStyle:{
        flexDirection:'row',
        height:64,
        // 侧轴对齐方式
        alignItems:'center',
        // backgroundColor:'blue',
    },
    // 导航栏右侧图片
    navRightImgStyle:{
        width:Platform.OS === 'ios' ? 28 : 24,
        height:Platform.OS === 'ios' ? 28 : 24,
    },
    container: {
        flex: 1,
        backgroundColor: '#e8e8e8',
    },
    welcome: {
        fontSize: 20,
        textAlign: 'center',
        margin: 10,
    },

});

// 输出
module.exports = Home;

　　

2.ShopCenter.js

/**
 * 首页购物中心
 */
import React, { Component } from 'react';
import {
    AppRegistry,
    StyleSheet,
    Text,
    View,
    ScrollView,
    Image,
    TouchableOpacity
} from 'react-native';

// 导入外部组件类
var TitleView = require('./TitleCommonCell');
// 导入json数据
var Home_D5 = require('../../LocalData/XMG_Home_D5.json');

// ES5
var ShopCenter = React.createClass({
    getDefaultPorps(){
        return{
            popToHomeView:null, // 回调函数
        }
    },
    render() {
        return (
            <View style={styles.container}>
                <TitleView
                    leftIcon="gw"
                    leftTitle="购物中心"
                    rightTitle={Home_D5.tips}
                />
                <ScrollView
                    style={styles.scrollViewStyle}
                    horizontal={true}
                    showsHorizontalScrollIndicator={false}
                >
                    {this.renderAllItem()}
                </ScrollView>
            </View>
        );
    },

    // 返回所有item
    renderAllItem(){
        var itemArr = [];
        var shopData = Home_D5.data;
        for (var i=0;i<shopData.length;i++){
            var data = shopData[i];
            itemArr.push(
                <ShopCenterItem
                    key={i}
                    shopImage={data.img}
                    shopSale={data.showtext.text}
                    shopName={data.name}
                    detailurl={data.detailurl}
                    popToShopCenter={(url)=>this.popTopHome(url)}
                />
            )
        }
        return itemArr;
    },

    // 返回首页
    popTopHome(url){
        if(this.props.popToHomeView != null){
            this.props.popToHomeView(url);
        }
    }
});

// 每一个商场
var ShopCenterItem = React.createClass({
    getDefaultProps(){
        return{
            shopImage:'',
            shopSale:'',
            shopName:'',
            detailurl:'',
            popToShopCenter:null
        }
    },
    render() {
        return (
            <TouchableOpacity activeOpacity={0.8} onPress={()=>this.clickItem(this.props.detailurl)}>
                <View style={styles.itemViewStyle}>
                   <Image source={{uri:this.props.shopImage}} style={styles.imageStyle}/>
                    <Text style={styles.shopSaleStyle}>{this.props.shopSale}</Text>
                    <Text style={styles.shopNameStyle}>{this.props.shopName}</Text>
                </View>
            </TouchableOpacity>
        );
    },

    // 点击事件
    clickItem(url){
        if(this.props.detailurl != null){
            this.props.popToShopCenter(url);
        }
    },
});

const styles = StyleSheet.create({
    container: {
        marginTop:10,
    },
    scrollViewStyle:{
        flexDirection:'row',
        backgroundColor:'white',
        padding:10,
    },
    itemViewStyle:{
        margin:8,
    },
    imageStyle:{
        width:120,
        height:100,
        borderRadius:8,
    },
    shopSaleStyle:{
        // 定位
        position:'absolute',
        left:0,
        bottom:30,
        backgroundColor:'red',
        color:'white',
        padding:3,
    },
    shopNameStyle:{
        textAlign:'center',
        marginTop:5,
    },
});

// 输出
module.exports = ShopCenter;

　　

3.ShopCenterDetail.js

/**
 * 购物中心详情
 */
import React, { Component } from 'react';
import {
    AppRegistry,
    StyleSheet,
    Text,
    View,
    Platform,
    Image,
    TouchableOpacity,
    WebView
} from 'react-native';

// ES5
var ShopCenterDetail = React.createClass({
    getInitialState(){
        return{
            detailUrl: this.props.url
        }
    },
    render() {
        return (
            <View style={styles.container}>
                {this.renderNavBar()}
                <WebView
                    automaticallyAdjustContentInsets={true}
                    source={{uri: this.state.detailUrl}}
                    javaScriptEnabled={true}
                    decelerationRate="normal"
                    startInLoadingState={true}
                />
            </View>
        );
    },
    // 导航条
    renderNavBar(){
        return(
            <View style={styles.navOutViewStyle}>
                <TouchableOpacity activeOpacity={0.8} onPress={()=>{this.props.navigator.pop()}} style={styles.LeftViewStyle}>
                    <Image source={{uri:'icon_camera_back_normal'}} style={styles.navImgStyle} />
                </TouchableOpacity>
                <Text style={{color:'white',fontSize:16,fontWeight:'bold'}}>购物中心</Text>
                <TouchableOpacity  style={styles.rightViewStyle}>
                    <Image source={{uri:'icon_mine_setting'}} style={styles.navImgStyle} />
                </TouchableOpacity>
            </View>
        )
    }
});

const styles = StyleSheet.create({
    container: {
        flex:1,
    },
    // 导航条视图
    navOutViewStyle:{
        height:Platform.OS === 'ios' ? 64 : 44,
        backgroundColor:'rgba(255,96,0,1)',
        // 主轴方向
        flexDirection:'row',
        // 侧轴对齐方式 垂直居中
        alignItems:'center',
        // 主轴方向居中
        justifyContent:'center',
    },
    // 导航条左侧
    LeftViewStyle:{
        position:'absolute',
        left:10,
        bottom:15,
    },
    // 导航栏右侧
    rightViewStyle:{
        // 绝对定位
        position:'absolute',
        right:10,
        bottom:15,
    },
    // 导航条上图片
    navImgStyle:{
        width:Platform.OS === 'ios' ? 28 : 24,
        height:Platform.OS === 'ios' ? 28 : 24,
    },

});

// 输出
module.exports = ShopCenterDetail;

　　

4.效果图