ReactNative实现图集功能

import React, { Component } from 'react';
import {
    AppRegistry,
    StyleSheet,
    Text,
    View,
    Image,
    Modal,
    ScrollView,
} from 'react-native';
import ImageViewer from 'react-native-image-zoom-viewer';

const images = [{
    url: 'http://static.gangguwang.com/image/2017/8/29/16/24/59a524af10f4e8000900198c.jpg'
}, {
    url: 'http://static.gangguwang.com/image/2017/8/29/16/7/59a520d710f4e80009001950.jpg'
}];
let imgsDesc = [
    "主播上午有事不在公司，拍摄安排被调到了下午，小侯就提前在电脑面前到处浏览网站，找下一周视频的拍摄主题。视频一旦拍出来就要赶紧制作，刚制作完上传到网上又要开始下一期栏目的剧本构思，主题内容既要是当下热点又要能维持热度直到视频上传，还要考虑适合远近镜头的表现和镜头的切换等，所以小侯每周最头疼的事情就是拍摄主题。",
    "徐小明是陕西西安东岭旗下的业务员！"
];

class index extends Component {
    render() {
        return (
            <Modal visible={true} >
                <ImageViewer imageUrls={images} renderFooter={(currentIndex) => {
                    return (
                        <ScrollView style={{ height: 70, marginTop: -70 }}>
                            <Text style={{ color: '#fff', paddingLeft: 10, paddingRight: 10 }}>{imgsDesc[currentIndex]}</Text>
                        </ScrollView>
                    );
                }
                } />
            </Modal >
        );
    }
}

const styles = StyleSheet.create({
    container: {
        flex: 1,
        justifyContent: 'center',
        alignItems: 'center',
        backgroundColor: '#fff',
    }
});

module.exports = index;