uni-app聊天室|vue+uniapp仿微信聊天实例|uniapp仿微信App界面

一、介绍

运用uniapp+vue+vuex+swiper+unipop等技术开发的仿微信原生app聊天室|仿微信聊天界面实例项目uniapp-chatroom，实现了发送图文消息、表情(gif图)，图片预览、地图位置、长按菜单、红包/钱包、仿微信朋友圈等功能。

二、测试效果

h5 + 小程序 + app端测试效果如下，实测多端效果均为一致。(后续大图统一展示app端)

二、技术选型

• 编辑器：hbuilder x
• 技术框架：uni-app + vue
• 状态管理：vuex
• iconfont图标：阿里字体图标库
• 自定义导航栏 + 底部tabbar
• 弹窗组件：unipop（基于uni-app封装模态弹窗）
• 测试环境：h5端 + 小程序 + app端（三端均兼容）
• 高德地图：vue-amap

◆ 顶部导航栏headerbar

顶部导航栏采用的是自定义模式，具体可参看这篇文章：

在pages.json里面配置globalstyle，将navigationstyle设为custom时，原生顶部导航栏不显示，这时就能自定义导航栏

 "globalstyle": {"navigationstyle": "custom"} 

◆ 引入公共样式/组件及全局弹窗

import vue from 'vue'
import app from './app'

// >>>引入css
import './assets/fonts/iconfont.css'
import './assets/css/reset.css'
import './assets/css/layout.css'

// >>>引入状态管理
import store from './store'
vue.prototype.$store = store

// >>>引入公共组件
import headerbar from './components/header/header.vue'
import tabbar from './components/tabbar/tabbar.vue'
import popupwindow from './components/popupwindow.vue'
vue.component('header-bar', headerbar)
vue.component('tab-bar', tabbar)
vue.component('popup-window', popupwindow)

// >>>引入unipop弹窗组件
import unipop from './components/unipop/unipop.vue'
vue.component('uni-pop', unipop)

vue.config.productiontip = false
app.mptype = 'app'

const app = new vue({
    ...app
})
app.$mount()

◆ vuex + uniapp登录验证

import vue from 'vue'
import vuex from 'vuex'

vue.use(vuex)

export default new vuex.store({
    state: {
        user: uni.getstoragesync('user'),
        token: uni.getstoragesync('token'),
    },
    mutations: {
        // 存储token
        set_token(state, data) {
            state.token = data
            uni.setstoragesync('token', data)
        },
        // 存储用户名
        set_user(state, data) {
            state.user = data
            uni.setstoragesync('user', data)
        },
        ...
    },
})

<script>
    import { mapstate, mapmutations } from 'vuex'
    import util from '../../utils/util.js'
    
    export default {
        data() {
            return {
                formobj: {},
            }
        },
        computed: {
            ...mapstate(['user', 'token'])
        },
        mounted() {
            // 判断是否有登录
            if(this.user){
                uni.redirectto({url: '/pages/index/index'})
            }
        },
        methods: {
            // 提交表单
            handlesubmit(e) {
                ...
            }
        }
    }
</script>

◆ 仿微信朋友圈透明导航栏

通过onpagescroll函数实现自定义导航上下滑动自动调整导航栏的透明度，滑动到距离顶部200 效果如下图二

  

/**
 * @tpl 朋友圈模板
 */

<template>
    <view class="flexbox flex_col">
        <header-bar :isback="true" title="朋友圈" :bgcolor="{background: headerbarbackground}" transparent>
            <text slot="back" class="uni_btnico iconfont icon-arrl"></text>
            <text slot="iconfont" class="uni_btnico iconfont icon-publish mr_5" @tap="handlepublish"></text>
        </header-bar>
        
        <view class="uni__scrollview flex1">
            <view class="uni-friendzone">
                ...
            </view>
        </view>
    </view>
</template>

<script>
    export default {
        data() {
            return {
                headerbarbackground: 'transparent'
            }
        },
        onpagescroll : function(e) {
            // console.log("滚动距离为：" + e.scrolltop);
            this.headerbarbackground = 'rgba(65,168,99,'+e.scrolltop / 200+')'
        },
        methods: {
            ...
        }
    }
</script>

<style scoped>

</style>

◆ uniapp实现聊天页面滚动至底部

在h5端将聊天页面滚动到底部很好实现，小程序中通过设置scroll-view属性scroll-into-view的值也能实现，可是在uni-app里面怎么将聊天信息滚动至底部呢？

uni-app通过判断聊天内容高度和scroll-view高度的大小设置滚动距离

<scroll-view id="scrollview" scroll-y="true" :scroll-top="scrolltop" style="height: 100%;">
    <view class="uni-chatmsgcnt" id="msglistview">
        <view class="msgitem">xxx</view>
        <view class="msgitem">xxx</view>
        <view class="msgitem">xxx</view>
        ...
    </view>
</scroll-view>

export default {
    data() {
        return {
            scrolltop: 0,
            ...
        }
    },
    mounted() {
        this.scrolltobottom()
    },
    updated() {
        this.scrolltobottom()
    },
    methods: {
        // 滚动至聊天底部
        scrolltobottom(t) {
            let that = this
            let query = uni.createselectorquery()
            query.select('#scrollview').boundingclientrect()
            query.select('#msglistview').boundingclientrect()
            query.exec((res) => {
                // console.log(res)
                if(res[1].height > res[0].height){
                    that.scrolltop = res[1].height - res[0].height
                }
            })
        },
        ...
    }
}

◆ uniapp聊天代码片段

<script>
    const emotionjson = require('./mock-emotion.js')
    const messagejson = require('./mock-chat.js')
    
    export default {
        data() {
            return {
                scrolltop: 0,
                
                showfoottoolbar: false,
                showemotionchoose: false,
                
                editortext: '',
                editorlastcursor: null,
                
                // 表情json
                emotionlist: emotionjson,
                
                // 消息记录
                messagelist: messagejson,
                
                // 预览图片临时数组
                previewimgarray: [],
            }
        },
        mounted() {
            this.scrolltobottom()
        },
        updated() {
            this.scrolltobottom()
        },
        methods: {
            // 滚动至聊天底部
            scrolltobottom(t) {
                let that = this
                let query = uni.createselectorquery()
                query.select('#scrollview').boundingclientrect()
                query.select('#msglistview').boundingclientrect()
                query.exec((res) => {
                    // console.log(res)
                    if(res[1].height > res[0].height){
                        that.scrolltop = res[1].height - res[0].height
                    }
                })
            },
            
            // 点击聊天消息区域
            msgpaneltaped() {
                if(!this.showfoottoolbar) return
                this.showfoottoolbar = false
            },
            
            // 表情、选择区切换
            swtemotionchooseview(bool) {
                this.showfoottoolbar = true
                this.showemotionchoose = bool
            },
            
            ...
            
            // 点击表情
            handleemotiontaped(emoj) {
                if(emoj == 'del') return
                // 在光标处插入表情
                let startstr = this.editortext.substr(0, this.editorlastcursor)
                let endstr = this.editortext.substr(this.editorlastcursor)
                this.editortext = startstr + `${emoj}` + endstr
            },
            
            
            // >>> 【选择区功能模块】------------------------------------------
            // 选择图片
            handlelaunchimage() {
                let that = this
                let msglist = this.messagelist
                let len = msglist.length
                // 消息队列
                let data = {
                    id: `msg${++len}`,
                    msgtype: 5,
                    isme: true,
                    avator: '/static/uimg/u__chat_img1.jpg',
                    author: 'king',
                    msg: '',
                    imgsrc: '',
                    videosrc: ''
                }
                
                uni.chooseimage({
                    count: 1,
                    sourcetype: ['album'],
                    success: function(res){
                        // console.log(res)
                        // console.log(res.tempfilepaths)
                        data.imgsrc = res.tempfilepaths.tostring()
                        msglist = msglist.concat(data)
                        that.messagelist = msglist
                    }
                })
            },
            
            ...
            
            // 位置
            handlechooselocation() {
                let that = this
                let msglist = this.messagelist
                let len = msglist.length
                // 消息队列
                let data = {
                    id: `msg${++len}`,
                    msgtype: 8,
                    isme: true,
                    avator: '/static/uimg/u__chat_img1.jpg',
                    author: 'king',
                    msg: '',
                    imgsrc: '',
                    videosrc: ''
                }
                
                uni.chooselocation({
                    success: (res) => {
                        console.log(res)
                        // 插入消息
                        data.msg = {
                            name: res.name,
                            address: res.address,
                            latitude: res.latitude,
                            longitude: res.longitude
                        }
                        msglist = msglist.concat(data)
                        that.messagelist = msglist
                    }
                })
            },
            
        }
    }
</script>

以上就是基于uniapp开发仿微信聊天室的介绍，希望大家能喜欢