语音识别被别的音乐占用后，再次使用  报[setAudioCategoryWithError] reset category from: AVAudioSessionCategoryPlayback to: AVAudioSessionCategoryPlayAndRecord.

能不能告知哪一个API是切换，前台使用的时候没问题，但是后台使用会报该错误。  急急急，TKS

[DEBUG][bds_EventManagerAsr.cpp:471]start sn=CEC1BB46-9A3E-471C-A497-2E4153059C37

2017-12-11 18:20:34.474411+0800 TradeEhome_v3[11310:2622361] [setAudioCategoryWithError] check category

2017-12-11 18:20:34.476870+0800 TradeEhome_v3[11310:2622361] [setAudioCategoryWithError] reset category from: AVAudioSessionCategoryPlayback to: AVAudioSessionCategoryPlayAndRecord.

[ERROR][bds_AudioRecorder_iOS_Impl.mm:240][prepareRecorder setActive failed, desc:NSOSStatusErrorDomain, code:560557684]

[DEBUG][bds_EventManagerAsr.cpp:936]vr_handler work_status=0, encoded_err=0, err_desc=, need_finish=0, need_stop=0, need_loop=0

[DEBUG][bds_EventManagerAsr.cpp:937]vr_handler m_has_cancelled=0, m_need_cancelled_callback=0

[DEBUG][bds_EventManagerAsr.cpp:1031]Encounter error: MIC ERR: audio queue start failed.--560557684

[DEBUG][bds_EventManagerAsr.cpp:936]vr_handler work_status=8, encoded_err=655361, err_desc=MIC ERR: audio queue start failed.--560557684, need_finish=1, need_stop=0, need_loop=0

[DEBUG][bds_EventManagerAsr.cpp:937]vr_handler m_has_cancelled=0, m_need_cancelled_callback=0

[DEBUG][bds_EventManagerAsr.cpp:654]1cancel_internal m_vr_is_running=1

[DEBUG][bds_EventManagerAsr.cpp:660]2cancel_internal m_vr_is_running=0

[INFO][bds_EventManagerDec_Chunk.cpp:227][EventManagerDecChunk::cancel]user_cancel - false