微信小程序背景音频播放

/**
   * @desc 点击播放
   * @version 1.0
   * @date 2017-06-15
   */
  audioPlay:function(e){
    var that = this ;    
    var dataUrl = e.target.dataset.audioUrl;//  获取音频的url
    var number = e.target.dataset.number;// 获取当前播放的 题号
    var playType = e.target.dataset.playType;//播放类型，0播放开场白，1播放 试题音频
    this.bgplay(dataUrl, playType, number);   
    that.setData({
      playAction: ‘audioPause‘,
      playIcon: ‘../../resources/kind/pause.png‘
    });
  },

  /**
   * @desc 播放背景音乐
   * @version 1.1
   * @date2017-07-04
   */
  bgplay:function(dataurl = ‘‘,playType = 0,number = 0){
    
    const bgm = this.bgm;
    var currentTime = parseInt(bgm.currentTime);    
    var that = this;
    bgm.title = this.ti.charpter_name;   
    bgm.src = dataurl;    
    if(that.start == 1){
      bgm.startTime = currentTime + 1.5;
    }   
    bgm.play();   // 调用 播放 音频的 方法

    //判断播放 音频的类型，如果 播放的是开场白 ，则 下一次播放的是 试题音频，反之亦然
    if(playType == 1){
      playType = 0 ;
      if(number <=1){
        number = 2;
      }else{
        number ++ ;
      }
    }else{
      playType = 1 ;
      if(number <=1){
        number = 1 ;
      }
    } 

    /*播放结束后播放下一个音频*/
    bgm.onEnded(function(){

      if (number == 4 && playType == 0){
        that.bgm.pause();
        that.setData({
          playAction: ‘audioPlay‘,
          playIcon: ‘../../resources/kind/play.png‘,
          thisNumber:2
        });
        number = 4 ;
        return;
      }
      that.start = 0 ;
      
      that.getNextAudio(number, playType);
      
    });

    


  },

  /**
   * @desc 请求下一个音频
   * @version 1.1
   * @author weizenghui
   * @date 2017-07-05
   */
  getNextAudio: function (number = 0, playType = 0){
    var that = this ; 
    var url, user, res, max, ableStatus, ableNanStatus, donumber ;
    url = ‘https://app.yatibang.com/weixin/smalllogin/getSystemRecover‘;
    donumber = number - 1 ;
    wx.getStorage({
      key: ‘user‘,
      success: function(res) {
        user = res.data;
      },
      complete:function(){
        wx.request({
          url: url,
          data:{
            cat_id:user.cat_id,
            cat_id_2:user.cat_id_2,
            number: number - 1,
            play_type:playType,
            wxuid:user.wxuid,
            openid:user.openid
          },
          success:function(msg){
            res = msg.data;
          },
          complete:function(){
            if (res.status == 500) {
              wx.showToast({
                title: res.message,
                icon: ‘loading‘,
                duration: 1000,
                mask: true
              })
              return false;
            }
            var dataurl;
            
            
            if (playType == 1) {             
              ableStatus = ‘true‘;
              dataurl = res.data.ti.resolve_audio;
            } else {
              ableStatus = ‘‘;
              dataurl = res.data.teacher.teacher_audio;
            }            
            
            var zanIcon = res.data.teacher.is_zan == 0 ? ‘../../resources/pic/zan.png‘ : ‘../../resources/pic/zan1.png‘;
            that.ti = res.data.ti;
            that.setData(
              {
                ti: res.data.ti,
                teacher: res.data.teacher,
                playUrl: res.data.ti.resolve_audio,
                playType: playType,
                duration: res.data.ti.duration,
                number: number,
                starttime: res.data.ti.start_time,
                setMaxHeight: res.data.maxHeight,
                zan: res.data.teacher.zan,
                zanIcon: zanIcon,
                ablebgStatus: ableStatus,
                max: res.data.ti.playtime_seconds,
                thisNumber: number

              });
            
            that.bgplay(dataurl, playType, number);


          }
        })
      }
    });






  }