flutter里音频播放，使用audioplayers播放音频，App切换到后台时自动停止播放了

audio.getPlayState({ 
  success: function(data) { 
    console.log(`handling success: state:{data.state},src:${data.src},currentTime:${data.currentTime},autoplay:${data.autoplay},loop:${data.loop}, 
            volume: ${data.volume},muted:${data.muted},notificationVisible:${data.notificationVisible}`) 
  }, 
  fail: function(data, code) { 
    console.log('handling fail, code=' + code) 
  } 
})