基于vue+uniapp直播项目

一、项目简介

uni-liveshow是一个基于vue+uni-app技术开发的集小视频/im聊天/直播等功能于一体的微直播项目。界面仿制抖音|火山小视频/陌陌直播，支持编译到多端(h5、小程序、app端) 且兼容效果一致。

二、效果预览

在h5、小程序、app端测试效果如下：(后续大图均为app端)

三、使用技术

◆ uniapp计算设备顶部状态栏高度

 /**  * @desc   uniapp主页面app.vue  * @about  q：282310962  wx：xy190310  */<script>    import vue from 'vue'    export default {        onlaunch: function() {            // console.log('app launch')            uni.getsysteminfo({                success:function(e){                    vue.prototype.statusbar = e.statusbarheight                    // #ifndef mp                    if(e.platform == 'android') {                        vue.prototype.custombar = e.statusbarheight + 50                    }el {                        vue.prototype.custombar = e.statusbarheight + 45                    }                    // #endif                                        // #ifdef mp-weixin                    let custom = wx.getmenubuttonboundingclientrect()                    vue.prototype.custombar = custom.bottom + custom.top - e.statusbarheight                    // #endif                                        // #ifdef mp-alipay                    vue.prototype.custombar = e.statusbarheight + e.titlebarheight                    // #endif                }            })        },    }</script>

◆ 项目中顶部透明导航栏设置

顶部导航栏采用的是自定义模式，可设置透明背景(如：个人主页/朋友圈动态) 具体可参看这篇文章：

<header-bar :isback="true" title=" " :bgcolor="{background: 'transparent'}" transparent>    <text slot="back" class="uni_btnico iconfont icon-guanbi" style="font-size: 25px;"></text>    <text slot="iconfont" class="uni_btnico iconfont icon-dots mr_5" style="font-size: 25px;"></text></header-bar>

◆ uniapp仿抖音小视频效果

项目中小视频界面功能效果类似抖音/火山小视频，使用swiper组件实现上下滑动切换视频播放。

<swiper :indicator-dots="fal" :duration="200" :vertical="true" :current="videoindex" @change="handleslider" style="height: 100%;">    <block v-for="(item,index) in vlist" :key="index">        <swiper-item>            <view class="uni_vdplayer">                <video :id="'myvideo' + index" :ref="'myvideo' + index" class="player-video" :src="item.src"                 :controls="fal" :loop="true" :show-center-play-btn="fal" objectfit="fill">                </video>                <!-- 中间播放按钮 -->                <view class="vd-cover flexbox" @click="handleclicked(index)"><text v-if="!isplay" class="iconfont icon-bofang"></text></view>                <!-- 底部信息 -->                <view class="vd-foottoolbar flexbox flex_alignb">                    <view class="vd-info flex1">                        <view class="item at">                            <view class="kw" v-for="(kwitem,kwindex) in item.keyword" :key="kwindex"><text class="bold fs_18 mr_5">＃</text> {{kwitem}}</view>                        </view>                        <view class="item subtext">{{item.subtitle}}</view>                        <view class="item uinfo flexbox flex_alignc">                            <image class="avator" :src="item.avator" mode="aspectfill" /><text class="name">{{item.author}}</text> <text class="btn-attention bg_linear1" :class="item.attention ? 'on' : ''" @tap="handleattention(index)">{{item.attention ? '已关注' : '关注'}}</text>                        </view>                        <view class="item reply" @tap="handlevideocomment"><text class="iconfont icon-pinglun mr_5"></text> 写评论...</view>                    </view>                    <view class="vd-sidebar">                        <view v-if="item.cart" class="ls cart flexbox bg_linear3" @tap="handlevideocart(index)"><text class="iconfont icon-cart"></text></view>                        <view class="ls" @tap="handleislike(index)"><text class="iconfont icon-like" :class="item.islike ? 'like' : ''"></text><text class="num">{{ item.likenum+(item.islike ? 1: 0) }}</text></view>                        <view class="ls" @tap="handlevideocomment"><text class="iconfont icon-liuyan"></text><text class="num">{{item.replynum}}</text></view>                        <view class="ls"><text class="iconfont icon-share"></text><text class="num">{{item.sharenum}}</text></view>                    </view>                </vi武汉大学专业排名ew>            </view>        </swiper-item>    </block></swiper>

视频滑动切换 播放、暂停 及单击/双击判断，商品及评论展示

<script>    // 引入商品广告、评论    import videocart from '@/components/cp-video/cart.vue'    import videocomment from '@/components/cp-video/comment'        let timer = null    export default {        data() {            return {                videoindex: 0,                vlist: videojson,                                isplay: true,    //当前视频是否播放中                clicknum: 0,    //记录点击次数            }        },        components: {            videocart, videocomment        },        onload(option) {            this.videoindex = parint(option.index)        },        onready() {            this.init()        },        methods: {            init() {                this.videocontextlist = []                for(var i = 0; i < this.vlist.length; i++) {                    // this.videocontextlist.push(this.$refs['myvideo' + i][0])                    this.videocontextlist.push(uni.createvideocontext('myvideo' + i, this));                }                                ttimeout(() => {                    this.play(this.videoindex)                }, 200)            },                        // 滑动切换            handleslider(e) {                let curindex = e.detail.current                if(this.videoindex >= 0){                    this.videocontextlist[this.videoindex].pau()                    this.videocontextlist[this.videoindex].ek(0)                    this.isplay = fal                }                if(curindex === this.videoindex + 1) {                    this.videocontextlist[this.videoindex + 1].play()                    this.isplay = true                }el if(curindex === this.videoindex - 1) {                    this.videocontextlist[this.videoindex - 1].play()                    this.isplay = true                }                this.videoindex = curindex            },            // 播放            play(index) {                this.videocontextlist[index].play()                this.isplay = true            },            // 暂停            pau(index) {                this.videocontextlist[index].pau()                this.isplay = fal            },            // 点击视频事件            handleclicked(index) {                if(timer){                    cleartimeout(timer)                }                this.clicknum++                timer = ttimeout(() => {                    if(this.clicknum >= 2){                        console.log('双击视频')                    }el{                        console.log('单击视频')                        if(this.isplay){                            this.pau(index)                        }el{                            this.play(index)                        }                    }                    this.clicknum = 0                }, 300)            },                                    // 喜欢            handleislike(index){                let vlist = this.vlist                vlist[index].islike =! vlist[index].islike                this.vlist = vlist            },            // 显示评论            handlevideocomment() {                this.$refs.videocomment.show()            },                        // 显示购物车            handlevideocart(index) {                this.$refs.videocart.show(index)            },        }    }</script>

在项目开发过程中，遇到了视频video层级高不能覆盖的问题，使用nvue页面就可以解决view覆盖在video之上。.nvue(native vue的缩写)

更多关于nvue页面开发，可以参看：uniapp开发nvue页面

◆ uniapp聊天页面实现

项目中的聊天页面，功能效果这里就不详细介绍了，可参看这篇：

◆ 直播页面live.nvue

为避免video不能覆盖问题，直播页面采用的是nvue编写，开发过程也遇到了一些坑，尤其是css，全部是flex布局，而且不能多级嵌套，有些css属性不支持。

<template>    <div class="nlv__container">        <view class="nlv_main">            <swiper class="nlv-swiper" :indicator-dots="fal" :vertical="fal" :current="videoindex" @change="handleslider">                <swiper-item v-for="(item, index) in vlist" :key="index">                    <!-- //直播区 -->                    <view class="nlv-playerbox">                        <video :id="'myvideo' + index" :ref="'myvideo' + index" class="player-video" :src="item.src" :autoplay="index == videoindex"                        :controls="fal" :loop="true" :show-center-play-btn="fal" objectfit="fill" :style="{height: winheight, width: winwidth}">                        </video>                                                <!-- //顶部 -->                        <view class="nlv_topbar" :style="{ height: headerbarh, 'padding-top': statusbarh }">                            ...                        </view>                                                <!-- //排名信息 -->                        <view class="nlv-rankbox" :style="{top: headerbarh}">                            <view class="nlv-rkls">                                <text class="rkitem">总排名{{item.allrank}}</text>                                <text v-if="item.hourrank" class="rkitem">小时榜第{{item.hourrank}}名</text>                            </view>                            <text class="nlv-uid">u直播:{{item.uid}}</text>                        </view>                                                <!-- //底部信息栏 -->                        <view class="nlv-foottoolbar">                            <!-- 送礼物提示 -->                            <view class="nlv-gifttippanel">                                ...                            </view>                                                        <!-- 滚动msg信息 -->                            <scroll-view class="nlv-rollmsgpanel" scroll-y show-scrollbar="fal">                                <block v-for="(msgitem, msgidx) in item.rollmsg" :key="msgidx">                                    <view class="nlv-msglist"><view class="msg_bg"><text class="msg_name">{{msgitem.uname}}</text> <text class="msg_text">{{msgitem.content}}</text></view>&天水师院lt;/view>                                </block>                            </scroll-view>                                                        <view class="nlv-infobox">                                <view class="nlv_reply" @tap="handlerollmsg(index)"><text class="nlv_reply_text">说点什么...</text></view>                                <view class="nlv_btntool">                                    ...                                    <view v-if="item.cart" class="btn-toolitem" @tap="handlelivecart(index)"><text class="iconfo潇潇雨歇nt i-btntool" style="color: #ff4e0e;font-size: 20px;"></text></view>                                    <view class="btn-toolitem btn-toolitem-cart" @tap="handlelivegift"><text class="iconfont i-btntool"></text></view>                                    ...                                </view>                            </view>                        </view>                    </view>                </swiper-item在这里作文>            </swiper>        </view>                <!-- 商品广告、滚动消息、礼物 -->        <live-cart ref="livecart" :vlist="vlist" />        <roll-msg ref="rollmsg" :vlist="vlist" />        <live-gift ref="l洪颜ivegift" />    </div></template>

另外引入阿里字体图标也需注意：通过weex方式引入

beforecreate() {    // 引入iconfont字体    // #ifdef app-plus    const dommodule = weex.requiremodule('dom')    dommodule.addrule('fontface', {        fontfamily: "nvueicon",        'src': "url('../../../static/fonts/iconfont.ttf')"    });    // #endif},

至于视频滑动切换和上面小视频操作差不多，就不贴码了。到这里，uni-liveshow项目基本介绍完了，希望对大家有些许帮助。