Taro聊天室|react+taro仿微信聊天App界面|taro聊天实例

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~~ ????