详解uni-app（vue）基于InnerAudioContext封装一个基本的音频组件

<view class="custom-audio">   <image v-if="audioSrc !== undefined && audioSrc !== null && audioSrc !== &#39;&#39;" @click="playOrStopAudio" :src="audioImg" class="audio-btn" />   <text v-else @click="tips" class="audio-btn">无音源</text>   <text>{{ fmtSecond(currentTime) }}/{{ fmtSecond(duration) }}</text></view>复制代码

props: {  audioSrc: {    type: String,    default: ''   }, },复制代码

import { formatSecondToHHmmss, afterAudioPlay, beforeAudioRecordOrPlay } from &#39;../../lib/Utils&#39;const iconPaused = &#39;../../static/images/icon_paused.png&#39;const iconPlaying = &#39;../../static/images/icon_playing.png&#39;const iconStop = &#39;../../static/images/icon_stop.png&#39;const iconLoading = &#39;../../static/images/icon_loading.gif&#39;// ...data() {  return {    audioCtx: null, // 音频上下文     duration: 0, // 音频总时长     currentTime: 0, // 音频当前播放的时长     audioImg: iconLoading, // 默认状态为加载中   } },watch: {  audioSrc: {     handler(newSrc, oldSrc) {      console.log(&#39;watch&#39;, newSrc, oldSrc)      this.audioImg = iconLoading      this.currentTime = 0       this.duration = 0       if (this.audioCtx === undefined) {        this.audioCtx = uni.createInnerAudioContext()        this.onTimeUpdate = this.audioCtx.onTimeUpdate        this.bindAuidoCallback(this.audioCtx)       } else {        this.audioCtx.src = newSrc       }      if (this.audioCtx.play) {        this.audioCtx.stop()         getApp().globalData.audioPlaying = false       }     }   } }, mounted() {  this.audioCtx = uni.createInnerAudioContext()  this.audioCtx.src = this.audioSrc  this.audioCtx.startTime = 0   this.bindAuidoCallback(this.audioCtx) },methods: {   bindAuidoCallback(ctx) {     ctx.onTimeUpdate((e) => {      this.onTimeUpdate(e)     })     ctx.onCanplay((e) => {      this.onCanplay(e)     })     ctx.onWaiting((e) => {      this.onWaiting(e)     })     ctx.onPlay((e) => {      this.onPlay(e)     })     ctx.onPause((e) => {      this.onPause(e)     })     ctx.onEnded((e) => {      this.onEnded(e)     })     ctx.onError((e) => {      this.onError(e)     })   },   tips(){     uni.showToast({      title: &#39;无效音源,请先录音&#39;,      icon: &#39;none&#39;     })   },   playOrStopAudio() {    if (this.audioCtx === null) {      this.audioCtx = uni.createInnerAudioContext()      this.audioCtx.src = this.audioSrc      this.bindAuidoCallback(this.audioCtx)     }    if (this.audioCtx.paused) {      if (beforeAudioRecordOrPlay(&#39;play&#39;)) {        this.audioCtx.play()        this.audioImg = iconPlaying       }     } else {      this.audioCtx.pause()       afterAudioPlay()      this.audioImg = iconPaused     }   },   onTimeUpdate(e) {    console.log(&#39;onTimeUpdate&#39;, this.audioCtx.duration, this.audioCtx.currentTime)    if (this.audioCtx.currentTime > 0 && this.audioCtx.currentTime <= 1) {      this.currentTime = 1     } else if (this.currentTime !== Math.floor(this.audioCtx.currentTime)) {      this.currentTime = Math.floor(this.audioCtx.currentTime)     }    const duration = Math.floor(this.audioCtx.duration)    if (this.duration !== duration) {      this.duration = duration     }   },   onCanplay(e) {    if (this.audioImg === iconLoading) {      this.audioImg = iconPaused     }    console.log(&#39;onCanplay&#39;, e)   },   onWaiting(e) {    if (this.audioImg !== iconLoading) {      this.audioImg = iconLoading     }   },   onPlay(e) {    console.log(&#39;onPlay&#39;, e, this.audioCtx.duration)    this.audioImg = iconPlaying    if (this.audioCtx.duration > 0 && this.audioCtx.duration <= 1) {      this.duration = 1     } else {      this.duration = Math.floor(this.audioCtx.duration)     }   },   onPause(e) {    console.log(&#39;onPause&#39;, e)    this.audioImg = iconPaused   },   onEnded(e) {    console.log(&#39;onEnded&#39;, e)    if (this.audioImg !== iconPaused) {      this.audioImg = iconPaused     }     afterAudioPlay()   },   onError(e) {     uni.showToast({      title: &#39;音频加载失败&#39;,      icon: &#39;none&#39;     })    throw new Error(e.errMsg, e.errCode)   },   fmtSecond(sec) {    const { min, second } = formatSecondToHHmmss(sec)    return `${min}:${second}`   } },复制代码

<style lang="scss" scoped>.custom-audio {  border-radius: 8vw;  border: #CCC 1px solid;  background: #F3F6FC;  color: #333;  display: flex;  flex-flow: row nowrap;  align-items: center;  justify-content: space-between;  padding: 2vw;  font-size: 14px;   .audio-btn {    width: 10vw;    height: 10vw;    white-space: nowrap;    display: flex;    align-items: center;    justify-content: center;   } } </style>复制代码