一、项目简述
taro-chatroom是基于Taro多端实例聊天项目，运用Taro+react+react-redux+taroPop+react-native等技术开发的仿微信App界面聊天室，实现了发送消息/emoj表情、gif表情大图、图片预览、发红包、动态圈等功能。
二、预览效果
编译到H5端、小程序、App端效果如下：(后续大图均为APP端)
三、技术栈
- 编码/技术：Vscode + react/taro/redux/RN
- iconfont图标：阿里字体图标库
- 自定义导航栏Navigation + 底部Tabbar
- 弹窗组件：taroPop（基于Taro封装自定义模态框）
- 支持编译：H5端 + 小程序 + App端
/** * @desc Taro入口页面 app.jsx
* @about Q：282310962 wx：xy190310 */ import Taro, { Component } from '@tarojs/taro' import Index from './pages/index' // 引入状态管理redux import { Provider } from '@tarojs/redux' import { store } from './store' // 引入样式 import './app.scss' import './styles/fonts/iconfont.css' import './styles/reset.scss' class App extends Component { config = { pages: [ 'pages/auth/login/index', 'pages/auth/register/index', 'pages/index/index', ... ], window: { backgroundTextStyle: 'light', navigationBarBackgroundColor: '#fff', navigationBarTitleText: 'TaroChat', navigationBarTextStyle: 'black', navigationStyle: 'custom' } } // 在 App 类中的 render() 函数没有实际作用 // 请勿修改此函数 render () { return ( <Provider store={store}> <Index /> </Provider> ) } } Taro.render(<App />, document.getElementById('app'))
◆ Taro自定义顶部Navigation导航条 + Tabbar菜单
- 由于项目需求，顶部导航栏/底部tabbar均为自定义组件，详情见：Taro多端自定义导航栏Navbar+Tabbar实例
- 项目中用到的弹窗插件是基于Taro自定义模态框组件，参看：Taro自定义模态框组件
◆ 登录/注册验证模块
return ( <View className="taro__container flexDC bg-eef1f5"> <Navigation background='#eef1f5' fixed /> <ScrollView className="taro__scrollview flex1" scrollY> <View className="auth-lgreg"> {/* logo */} <View className="auth-lgreg__slogan"> <View className="auth-lgreg__slogan-logo"> <Image className="auth-lgreg__slogan-logo__img" src={require('../../../assets/taro.png')} mode="aspectFit" /> </View> <Text className="auth-lgreg__slogan-text">欢迎来到Taro-Chatroom</Text> </View> {/* 表单 */} <View className="auth-lgreg__forms"> <View className="auth-lgreg__forms-wrap"> <View className="auth-lgreg__forms-item"> <Input className="auth-lgreg__forms-iptxt flex1" placeholder="请输入手机号/昵称" onInput={this.handleInput.bind(this, 'tel')} /> </View> <View className="auth-lgreg__forms-item"> <Input className="auth-lgreg__forms-iptxt flex1" placeholder="请输入密码" password onInput={this.handleInput.bind(this, 'pwd')} /> </View> </View> <View className="auth-lgreg__forms-action"> <TouchView onClick={this.handleSubmit}><Text className="auth-lgreg__forms-action__btn">登录</Text></TouchView> </View> <View className="auth-lgreg__forms-link"> <Text className="auth-lgreg__forms-link__nav">忘记密码</Text> <Text className="auth-lgreg__forms-link__nav" onClick={this.GoToRegister}>注册账号</Text> </View> </View> </View> </ScrollView> <TaroPop ref="taroPop" /> </View> )
/** * @tpl 登录模块 */ import Taro from '@tarojs/taro' import { View, Text, ScrollView, Image, Input, Button } from '@tarojs/components' import './index.scss' import { connect } from '@tarojs/redux' import * as actions from '../../../store/action'... class Login extends Taro.Component { config = { navigationBarTitleText: '登录' } constructor(props) { super(props) this.state = { tel: '', pwd: '', } } componentWillMount() { // 判断是否登录 storage.get('hasLogin').then(res => { if(res && res.hasLogin) { Taro.navigateTo({url: '/pages/index/index'}) } }) } // 提交表单 handleSubmit = () => { let taroPop = this.refs.taroPop let { tel, pwd } = this.state if(!tel) { taroPop.show({content: '手机号不能为空', time: 2}) }else if(!util.checkTel(tel)) { taroPop.show({content: '手机号格式有误', time: 2}) }else if(!pwd) { taroPop.show({content: '密码不能为空', time: 2}) }else { // ...接口数据 ... storage.set('hasLogin', { hasLogin: true }) storage.set('user', { username: tel }) storage.set('token', { token: util.setToken() }) taroPop.show({ skin: 'toast', content: '登录成功', icon: 'success', time: 2 }) ... } } render () { ... } } const mapStateToProps = (state) => { return {...state.auth} } export default connect(mapStateToProps, { ...actions })(Login)
taro本地存储使用的是异步存储，由于同步存储不支持RN端
/** * @desc Taro本地存储 */ import Taro from '@tarojs/taro' export default class Storage { static get(key) { return Taro.getStorage({ key }).then(res => res.data).catch(() => '') } static set(key, data){ return Taro.setStorage({key: key, data: data}).then(res => res) } static del(key){ Taro.removeStorage({key: key}).then(res => res) } static clear(){ Taro.clearStorage() } }
如不希望编译到RN端，使用如下包裹即可
/*postcss-pxtransform rn eject enable*/
/*postcss-pxtransform rn eject disable*/
对于一些RN端不兼容样式，边框、超过多行...，需特殊样式处理
/* * 对于不兼容的样式，如RN不兼容border-right，可以通过mixin统一处理 */ /** * RN 不支持针对某一边设置 style，即 border-bottom-style 会报错 * 那么 border-bottom: 1px 就需要写成如下形式： border: 0 style color; border-bottom-width: 1px; */ @mixin border($dir, $width, $style, $color) { border: 0 $style $color; @each $d in $dir { #{border-#{$d}-width}: $width; } } /** * NOTE RN 无法通过 text-overflow 实现省略号，这些代码不会编译到 RN 中 */ @mixin ellipsis { /*postcss-pxtransform rn eject enable*/ overflow: hidden; white-space: nowrap; text-overflow: ellipsis; /*postcss-pxtransform rn eject disable*/ } /** * NOTE 实现多行文本省略，RN 用 Text 标签的 numberOfLines={2}，H5/小程序用 -webkit-line-clamp */ @mixin clamp($line) { /*postcss-pxtransform rn eject enable*/ display: -webkit-box; overflow: hidden; -webkit-line-clamp:$line; /* autoprefixer: ignore next */ -webkit-box-orient: vertical; /*postcss-pxtransform rn eject disable*/ } /** * 对于不能打包到 RN 的样式，可以用 postcss 方式引入 */ @mixin eject($attr, $value) { /*postcss-pxtransform rn eject enable*/ #{$attr}: $value; /*postcss-pxtransform rn eject disable*/ }
◆ Taro聊天实现消息滚动到底部
在taro中实现聊天消息滚动到最底部，由于RN端不支持 createSelectorQuery，如是做了兼容处理。
componentDidMount() { if(process.env.TARO_ENV === 'rn') { this.scrollMsgBottomRN() }else { this.scrollMsgBottom() } }
// 滚动至聊天底部 scrollMsgBottom = () => { let query = Taro.createSelectorQuery() query.select('#scrollview').boundingClientRect() query.select('#msglistview').boundingClientRect() query.exec((res) => { // console.log(res) if(res[1].height > res[0].height) { this.setState({ scrollTop: res[1].height - res[0].height }) } }) } scrollMsgBottomRN = (t) => { let that = this this._timer = setTimeout(() => { that.refs.ScrollViewRN.scrollToEnd({animated: false}) }, t ? 16 : 0) }
聊天中表情使用的是emoj表情符，如果使用图片做表情也是可以，不过需要一些特殊匹配处理 :12) [:高兴]，使用emoj就相对简单些罢了。
// 渲染消息记录 renderMsgTpl = (data) => { return data.map((item, index) => ( <View key={index}> {item.msgtype == 1 && <View className="msgitem msg__time"><Text className="msg__text">{item.msg}</Text></View> } {item.msgtype == 2 && <View className="msgitem msg__notice"><Text className="msg__text">{item.msg}</Text></View> } {item.msgtype == 3 && <View className="msgitem"> {!item.isme ? <View className="msg__avator"><Image className="msg__avator-img" src={item.avator} mode="aspectFit" /></View> : null} <View className={`msg__cntbox ${item.isme ? 'msg-me' : 'msg-others'}`}> <Text className="msg-author">{item.author}</Text> <View className={`msg__cnt ${item.isme ? 'msg__cnt-me' : 'msg__cnt-others'}`} onLongPress={this.handleLongPressMenu}> <Text className="msg__cnt-text">{item.msg}</Text> </View> </View> {item.isme ? <View className="msg__avator"><Image className="msg__avator-img" src={item.avator} mode="aspectFit" /></View> : null} </View> } {item.msgtype == 4 && <View className="msgitem"> {!item.isme ? <View className="msg__avator"><Image className="msg__avator-img" src={item.avator} mode="aspectFit" /></View> : null} <View className={`msg__cntbox ${item.isme ? 'msg-me' : 'msg-others'}`}> <Text className="msg-author">{item.author}</Text> <View className={`msg__cnt ${item.isme ? 'msg__cnt-me' : 'msg__cnt-others'} msg__lgface`} onLongPress={this.handleLongPressMenu}> <Image className="msg__lgface-img" src={item.imgsrc} mode="widthFix" /> </View> </View> {item.isme ? <View className="msg__avator"><Image className="msg__avator-img" src={item.avator} mode="aspectFit" /></View> : null} </View> } {item.msgtype == 5 && <View className="msgitem"> {!item.isme ? <View className="msg__avator"><Image className="msg__avator-img" src={item.avator} mode="aspectFit" /></View> : null} <View className={`msg__cntbox ${item.isme ? 'msg-me' : 'msg-others'}`}> <Text className="msg-author">{item.author}</Text> <View className={`msg__cnt ${item.isme ? 'msg__cnt-me' : 'msg__cnt-others'} msg__picture`} onClick={this.handlePreviewPicture.bind(this, item.imgsrc)} onLongPress={this.handleLongPressMenu}> <Image className="msg__picture-img" src={item.imgsrc} mode="widthFix" /> </View> </View> {item.isme ? <View className="msg__avator"><Image className="msg__avator-img" src={item.avator} mode="aspectFit" /></View> : null} </View> } ... </View> )) }
以上就是taro开发聊天室的一些分享，今天就介绍到这里，希望能有些许的帮助~~