微信小程序实现音频文件播放进度的实例代码

<view class="content-play-progress">
<text>{{play.currentTime}}</text>
<view>
<slider activeColor="#d33a31" block-size="12" backgroundColor="#dadada" value="{{play.percent}}"/>
</view>
<text>{{play.duration}}</text>
</view>

.content-play-progress{
display: flex;
align-items: center;
margin: 0 35rpx;
font-size: 9pt;
text-align: center;
}
.content-play-progress>view{
flex: 1;
}

onReady: function(){
this.audioCtx=wx.createInnerAudioContext()
var that=this
//播放失败检测
this. audioCtx.onError(function(){
console.log( ‘ 播放失败： ' +that.audioCtx.src)
})
//播放完成自动换下一曲
this. audioCtx.OnEnded(function(){
that.next()
})
//自动更新播放进度
this. audioCtx.onPlay(function(){
this. audioCtx.onTimeUpdate(function(){
that.setData({
‘ play.duration ' : formatTime(that.audioCtx.duration),
‘ play.currrentTime ' : formatTime(that.audioCtx. currrentTime),
‘ play.percent ' : that.audioCtx. currrentTime /
that.audioCtx.duration*100
})
})
//默认选择第一曲
T his.setMusic(0)
//格式化时间
function formatTime(time){
var minute=Math.floor(time/60)%60;
var second=Math.floor(time)%60
return (minute<10? ' 0 ' +minute:minute)+ ' : ' +
(second<10? ' 0 ' +second:second)
}
})
}

<slider bindchange= ” sliderChange ” activeColor= ” #d33a31 ” block-size= ” 12 ” backgroundColor= ” #dadada ” value= ” {{play.percent}} ” / >

sliderChange: function(e){
var second=e.detail.value* that.audioCtx.duration/100
that.audioCtx.seek(secend)
},