// 音乐监听函数
      var that = this;
      wx.onBackgroundAudioPlay(function () {
         that.setData({
            isPlayingMusic: true
         })
      });

      wx.onBackgroundAudioPause(function () {
         that.setData({
            isPlayingMusic: false
         })
      });

// 音乐播放
   onMusicTap: function (event) {
      var CurrentPostId = this.data.CurrentPostId;
      var postData = postsData.postList[CurrentPostId];
      var isPlayingMusic = this.data.isPlayingMusic;
      if (isPlayingMusic) {
         wx.pauseBackgroundAudio();
         this.setData({
            isPlayingMusic : false
         })
      }
      else {
         wx.playBackgroundAudio({
            dataUrl: postData.music.url,
            title: postData.music.title,
            coverImgUrl: postData.music.coverImg,
         })
         this.setData({
            isPlayingMusic : true
         })
      }
   },