Fix when interruption ends in the background.
Fix when interruption ends in the background.

royalwang/DOUAudioStreamer,talkmate/DOUAudioStreamer,hjw6160602/DOUAudioStreamer,hjw6160602/DOUAudioStreamer,talkmate/DOUAudioStreamer,cute/DOUAudioStreamer,Learn-IOS/DOUAudioStreamer,ycaihua/DOUAudioStreamer,cute/DOUAudioStreamer,ycaihua/DOUAudioStreamer,xuanyi0627/DOUAudioStreamer,eyu1988/DOUAudioStreamer,NghiaTranUIT/DOUAudioStreamer,sunfei/DOUAudioStreamer,zhantss/DOUAudioStreamer,douban/DOUAudioStreamer,jonesgithub/DOUAudioStreamer,eyu1988/DOUAudioStreamer,sunfei/DOUAudioStreamer,zhouwude/DOUAudioStreamer,douban/DOUAudioStreamer,Learn-IOS/DOUAudioStreamer,jonesgithub/DOUAudioStreamer,hjw6160602/DOUAudioStreamer,vinceee/DOUAudioStreamer,vinceee/DOUAudioStreamer,sunfei/DOUAudioStreamer,QiuZhiFei/DOUAudioStreamer,zhantss/DOUAudioStreamer,royalwang/DOUAudioStreamer,royalwang/DOUAudioStreamer,xuanyi0627/DOUAudioStreamer,zhouwude/DOUAudioStreamer,NghiaTranUIT/DOUAudioStreamer,NghiaTranUIT/DOUAudioStreamer,xuanyi0627/DOUAudioStreamer,QiuZhiFei/DOUAudioStreamer