xiaoyan2017

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

◆ 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~~

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