var isMusicPlay = this.data.isMusicPlay;
    var postData = this.data.postData;
    var backgroundAudioManager = wx.getBackgroundAudioManager();
  
    if(isMusicPlay) {
      backgroundAudioManager.pause();

      this.setData({
        isMusicPlay: false
      })
    }
    else {
        //設定title,src等屬性不能放在外部, 否則可能會造成無法停止播放
      backgroundAudioManager.title = postData.music.title;
      backgroundAudioManager.coverImgUrl = postData.music.coverImg;
      // 設定了 src 之後會自動播放
      backgroundAudioManager.src = postData.music.url;
      backgroundAudioManager.play();

      this.setData({
        isMusicPlay: true
      })
    }