我正在尝试实现AudioTrack以在我的android设备中检索来自IAX的来电的音频，但一段时间后遇到异常。privatevoidwriteBuff(short[]buf){try{if(this.track==null){Log.w("IAX2Audio","write()withoutanAudioTrack");return;}intwritten=0;while(written异常在这里04-2718:26:15.865:W/System.err(12681):java.lang.IllegalStateException:UnabletoretrieveAudioTrac