npm i react-native-swiper --save

import Swiper from 'react-native-swiper';

import React, { Component } from 'react';
import {
  AppRegistry,
  StyleSheet,
  Text,
  Image,
  View
} from 'react-native';

import Swiper from 'react-native-swiper';
import Dimensions from 'Dimensions';

// 屏幕宽度
var screenWidth = Dimensions.get('window').width;

export default class ScrollViewDemo extends Component {

  // 构造
  constructor(props){
        super(props);
        this.state = {
            isShow: false,
            items:[]
        }
    }
  render() {
        let H = 200;
        if (this.state.isShow) {
            return(
                <View style=>

                    <Swiper 
                      autoplay = {true} 
                      height = {H} 
                      showsPagination = {true} 
                      dotColor="white"
                      activeDotColor='yellow' horizontal={true}>
                        {
                            this.state.items.map((item, index) => {
                                //cover: 等比例放大; center:不变; contain:不变; stretch:填充;
                                return (<Image style= key = {index} resizeMode='cover' source={item}/>)
                            })
                        }

                    </Swiper>
                    <Text style={styles.title}>
                        滚动视图
                    </Text>
                </View>
            );
        }else {
            return(
                <View style=/>
            );
        }
    }

  componentDidMount() {
        var item;
        for (let i = 0; i < 3; i++){
            switch (i){
                case 0:{
                    item = require('./images/1.jpg');
                    break;
                }
                case 1:{
                    item = require('./images/2.jpg');
                    break;
                }
                default:{
                    item = require('./images/3.jpg');
                    break;
                }
            }
            this.state.items.push(item);

        }
        console.log(this.state.items + '111');
        this.setState({
            isShow: true,
            items: this.state.items
        })
    }
}

const styles = StyleSheet.create({
  
  title: {
    marginTop: 30,
    position: 'absolute',
    fontSize: 32, 
    backgroundColor:'transparent'
  },

});

AppRegistry.registerComponent('ScrollViewDemo', () => ScrollViewDemo);