[RN] React Native 实现图片预览

[RN] React Native 实现图片预览

 

效果预览：

 

代码如下：

'use strict'; import React, {Component} from 'react'; import {Image, StyleSheet, Text, View, ViewPagerAndroid, Dimensions} from 'react-native';const {width, height} = Dimensions.get("window");//图片地址 const PAGE_IMAGES = ['http://a.hiphotos.baidu.com/image/h%3D300/sign=4f5477ac8f26cffc762ab9b289014a7d/b3fb43166d224f4ad8b5722604f790529822d1d3.jpg','http://a.hiphotos.baidu.com/image/h%3D300/sign=10b374237f0e0cf3bff748fb3a47f23d/adaf2edda3cc7cd90df1ede83401213fb80e9127.jpg','http://e.hiphotos.baidu.com/image/h%3D300/sign=8562b2c234dbb6fd3a5be3263925aba6/8ad4b31c8701a18b536e1476932f07082838fe06.jpg','http://a.hiphotos.baidu.com/image/h%3D300/sign=fbe3d9666ed9f2d33f1122ef99ed8a53/3bf33a87e950352a464bc38f5f43fbf2b2118b0b.jpg' ];export default class TestViewPager extends Component {constructor(props) {super(props);this.state = {page: 0,totalPage: PAGE_IMAGES.length,}}onPageSelected = (event) => {this.setState({page: event.nativeEvent.position,});};render() {let pages = [];let len = this.state.totalPage;for (let i = 0; i < len; i++) {pages.push(<View key={i} collapsable={false}><Imagestyle={styles.image}source={{uri: PAGE_IMAGES[i]}}/></View>);}return (<View style={styles.container}><ViewPagerAndroidstyle={styles.viewPager}initialPage={0}onPageSelected={this.onPageSelected}ref={viewPager => {this.viewPager = viewPager;}}>{pages}</ViewPagerAndroid><View style={styles.showArea}><Text style={styles.showText}>{this.state.page + 1} / {this.state.totalPage}</Text></View></View>);} }const styles = StyleSheet.create({container: {flex: 1,backgroundColor: 'black',},viewPager: {width: width,height: height},image: {resizeMode: "contain",flex: 1,width: width},showArea: {position: "absolute",bottom: 60,flexDirection: 'row',width: width,height: 60,justifyContent: "center",alignItems: 'center',},showText: {fontSize: 20,color: "white"} });

 

 

本博客地址： wukong1688

本文原文地址：https://www.cnblogs.com/wukong1688/p/11002911.html

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转载于:https://www.cnblogs.com/wukong1688/p/11002911.html

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