请问大神们和官方大佬们，收款小账本语音播报在后台也能播报是如何实现的，

getBackgroundAudioManager在锁屏下调用就报错了是怎么回事啊？

thirdScriptError APP-SERVICE-SDK:Can not set wx.backgroundAudio.title, background audio is preempted.;at App playAudio function Error: APP-SERVICE-SDK:Can not set wx.backgroundAudio.title, background audio is preempted.     at t.Error (native)     at new t (X5JavaBridge:43:9587)     at a (X5JavaBridge:48:8133)     at Object.set (X5JavaBridge:48:12864)     at e.playAudio (X5JavaBridge:12:1181)     at e.<anonymous> (X5JavaBridge:54:15599)     at e.playSettings (X5JavaBridge:15:3738)     at e.<anonymous> (X5JavaBridge:54:891)     at X5JavaBridge:15:1519     at r.success (X5JavaBridge:3:4695)