AppRegistry.registerComponent('ReactNativeDemo', () => ReactNativeDemo); 2、本地图片 2-1 在项目中添加图片并加载 ImageView.js import React, { Component } from 'react'; import { StyleSheet, View, Text, Image, TouchableOpacity, } from 'react-native' export default class ImageView extends Compone...
Let's take a look at the basics of using React Native's Image component, as well as adding some reusable styling to our Dashboard component buttons. We are going to build Dashboard Component, it will looks like this: Basicly have one image component and three TouchableHighlight components. ...
importReact,{Component}from'react';import{AppRegistry,View,Image,StyleSheet}from'react-native';conststyles=StyleSheet.create({stretch:{width:50,height:200}});exportdefaultclassDisplayAnImageWithStyleextendsComponent{render(){return(<View><Image style={styles.stretch}source={require('./img/favicon.png'...
代码语言:txt 复制 import React, { Component } from 'react'; import { Image, View } from 'react-native'; class App extends Component { render() { return ( <View> <Image source={require('./path/to/local/image.png')} style={{ width: 200, height: 200 }} resizeMode="cover" onLoad=...
基础篇章:React Native之 Image 的讲解 今天一起来学习一些Image这个组件,它其实就是相当于我们android控件中的ImageView。 我们先看例子,看看加载本地图片和远程服务器图片的方式,其实差不多。 1. importReact, { Component } from'react'; import{ AppRegistry, View, Image } from'react-native';...
setHeight?:(height:number)=>voidonClick?:()=>void}interfaceState{imageW?:number imageH?:number}//图片自适应高度classImageextendsReact.PureComponent<Props,State>{publicstate:State={};componentDidMount(){const{width,height,source,setHeight}=this.propsif(width&&height){this.setState({imageW:width...
// 正确<Image source={{uri:'https://facebook.github.io/react/logo-og.png'}}style={{width:400,height:400}}/>// 错误<Image source={{uri:'https://facebook.github.io/react/logo-og.png'}}/> 简单使用 importReact,{Component}from'react';import{Image,StyleSheet,View}from'react-native';...
Performant React Native image component. FastImage example app. React Native'sImagecomponent handles image caching like browsers for the most part. If the server is returning proper cache control headers for images you'll generally get the sort of built in caching behavior you'd have in a brows...
众所周知,React Native的页面元素是由一个一个的组件所构成的,这些组件包括系统已经提供的组件,如View、TextInput等,还有一些第三方库提供的组件,以及自定义的组件。通常在封装组件的时候都会继承Component,不过在React 15.3版本中系统提供了PureComponent,下面就来看一下这两个组件的区别。
众所周知,React Native的页面元素是由一个一个的组件所构成的,这些组件包括系统已经提供的组件,如View、TextInput等,还有一些第三方库提供的组件,以及自定义的组件。通常在封装组件的时候都会继承Component,不过在React 15.3版本中系统提供了PureComponent,下面就来看一下这两个组件的区别。