ios下InneraudioContext无法播放？

//音频播放

const inneraudioContext = wx.createInnerAudioContext(); // 创建音频播放

let backgroundContext = wx.getBackgroundAudioManager();// 创建获取音频的


 audioplay: function (e) {
   let that = e.this;
   var src = e.currentTarget.dataset.audio;
   var mediaid = e.currentTarget.dataset.mediaid;  // 音频的ID
   var indexid = e.currentTarget.dataset.indexid  // 列表项ID
   var media = e.target.dataset.audiomedia;
   console.log(indexid)
    
   inneraudioContext.autoplay = true;
   inneraudioContext.src = src;
   var res= wx.getSystemInfoSync()
   if(res.platform=='ios'){
     console.log('ios')
     inneraudioContext.obeyMuteSwitch = false;
      
   }
    
   setTimeout(() => {
     inneraudioContext.play();
     inneraudioContext.currentTime
     inneraudioContext.onTimeUpdate(() => {
       console.log(inneraudioContext.duration)   //总时长
       // this.setData({
       //   // audiotime: inneraudioContext.duration.toFixed(0)+'s',
       //   isactive: indexid
       // })
       console.log('开始播放！代码')
     })
 
   }, 500)
   inneraudioContext.onPlay((res)=>{
     console.log('音频播放')
     this.setData({
       isactive: indexid,
        // 通过判断是不是当前的ID 如果是则后对比为true
     })
     speaking.call(this)
   })
 
   inneraudioContext.onPause((res) =>{
     console.log("pause")
     this.setData({
       isactive:indexid+"pause"
     })
     clearInterval(this.timer)
   })
   inneraudioContext.onEnded((res) => {
     console.log("音频停止了")
     clearInterval(this.timer)
     this.setData({
       isactive: indexid +"stop",
       // index_image:1
       // audiotime:''
     })
      
      
   })
   inneraudioContext.onError((res) => {
     console.log(res.message)
     console.log(res.errCoder)
   })
 
   clearInterval(this.timer)

 },