js:

const bgMusic = wx.getBackgroundAudioManager();//背景音频
Page({


  /**
   * 页面的初始数据
   */
  data: {
    musicArr:[],
    // 音乐播放器
    bgAudio:{
      index:0,
      isOpen: false,//播放开关
      starttime: '00:00', //正在播放时长
      duration: '00:00',   //总时长
      src:"",
      title:"",
    },
  },
  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function (options) {
    let that=this;
    that.data.musicArr=[{
      id:1,
      name:"红色基因绿色源泉",
      src:"/store/activity/audio/mpeg/41FFCFBD5494DFE67FE7E22AC54EEB282021092926031664",
      duration:"04:20"
    },{
      id:2,
      name:"我和我的祖国",
      src:"/store/activity/audio/mpeg/D342C12632FC462D142FEA8A80677D872021092941031658",
      duration:"03:08"
    }];
    that.setData({
      musicArr:that.data.musicArr,
    })
    that.getMusic(0);
   
  },
  getMusic(index){
    this.data.bgAudio.index=index;
    this.data.bgAudio.duration=this.data.musicArr[index].duration;
    this.data.bgAudio.src=this.data.musicArr[index].src;
    this.data.bgAudio.title=this.data.musicArr[index].name;
    this.setData({
      bgAudio:this.data.bgAudio
    })
  },
  // 播放
  ButtonPlay: function () {
    // wx.showLoading({
    //   title: '加载中...',
    // })
    var that = this;
    //bug ios 播放时必须加title 不然会报错导致音乐不播放
    bgMusic.title = that.data.bgAudio.title;
    bgMusic.epname = that.data.bgAudio.title;
    bgMusic.src = that.data.bgAudio.src;
    that.data.bgAudio.isOpen=true;
    bgMusic.onTimeUpdate(() => {
      //bgMusic.duration总时长  bgMusic.currentTime当前进度
      var duration = bgMusic.duration; 
      var offset = bgMusic.currentTime;  
      var currentTime = parseInt(offset);
      var min = "0" + parseInt(currentTime / 60);
      var max = parseInt(duration);
      var sec = currentTime % 60;
      if (sec < 10) {
        sec = "0" + sec;
      };
      var starttime = min + ':' + sec;   /*  00:00  */
      that.data.bgAudio.offset=currentTime;
      that.data.bgAudio.starttime=starttime;
      that.data.bgAudio.max=max;
      that.setData({
        bgAudio:that.data.bgAudio
      })
      console.log("index.js",starttime)
    })
    //播放结束
    bgMusic.onEnded(() => {
      that.data.bgAudio.starttime='00:00';
      that.data.bgAudio.isOpen=false;
      that.data.bgAudio.offset=0;
      that.setData({
        bgAudio:that.data.bgAudio
      })
      bgMusic.stop();
      // 循环播放 播放完最后一条循环播放
      if(that.data.bgAudio.index {
      console.log("播放中index.js")
      that.getHits(that.data.musicArr[that.data.bgAudio.index].id);
      that.data.bgAudio.isOpen=true;
      that.setData({
        bgAudio:that.data.bgAudio
      })
    })
 
  },
  //暂停播放
  ButtonPause(){
    var that = this
    bgMusic.pause();
    that.data.bgAudio.isOpen=false;
    that.setData({
      bgAudio:that.data.bgAudio
    })
  },
  // 进度条拖拽
  sliderChangeBj(e) {
    var that = this
    var offset = parseInt(e.detail.value);
    bgMusic.play();
    bgMusic.seek(offset);
    that.data.bgAudio.isOpen=true;
    that.setData({
      bgAudio:that.data.bgAudio
    })
  },
})

wxss:

/* 音频播放器 */
.width{
  width:92%;
  margin: auto;
}
.flex{
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
}
.flex1{
  flex:1;
}
.audio-box{
  height:190rpx;
  background: #fff;
  padding:30rpx;
  margin-top:30rpx;
  border-radius: 20rpx;
}
.audio-left{
  width:64rpx;
  height:64rpx;
}
.audio-right{
  padding-left:30rpx;
}
.audio-title{
  font-size: 30rpx;
  font-weight: 400;
  color: #333333;
}
.audio-box slider{
  padding:0;
  margin:0;
  margin-top:10rpx;
}
wx-slider .wx-slider-handle-wrapper{
  height:10rpx;
  border-radius: 10rpx;
}
.audio-time{
  font-size: 24rpx;
  font-weight: 400;
  color: #999999;
}

wxml

 <!-- 音频播放器 -->
  <view class="audio-box width flex">
    <text catchtap="{{bgAudio.isOpen? 'ButtonPause':'ButtonPlay'}}">{{bgAudio.isOpen? '暂停':'播放'}}</text>
    <!-- <image class="audio-left" src="{{bgAudio.isOpen? imagesSrc.icon33:imagesSrc.icon13}}" catchtap="{{bgAudio.isOpen? 'ButtonPause':'ButtonPlay'}}"></image> -->
    <view class="audio-right flex1">
      <view class="audio-title line1">{{bgAudio.title}}</view>
      <slider bindchange="sliderChangeBj"  block-size="14" block-color="#E0C999" step="1" value="{{bgAudio.offset}}" max="{{bgAudio.max}}" activeColor="#E0C999" />
      <view class="audio-time flex">
        <view class="flex1">{{bgAudio.starttime}}</view>
        <view>{{bgAudio.duration}}</view>
      </view>
    </view>
  </view>

效果图：