onHide: function () {

    var that = this

    console.log('进入后台')

    that.setData({

        audioSrc: '

    http://ws.stream.qqmusic.qq.com/M500001VfvsJ21xFqb.mp3?guid=ffffffff82def4af4b12b3cd9337d5e7&uin=346897220&vkey=6292F51D313romtag=46

',

     });

    that.audioCtx = wx.createAudioContext('myAudio')

    that.audioCtx.play();

}

这样不行？请问还有什么方法吗？