private static void backupAudioConfig(){
  if (null != mRestoreAudioConfigTimer) {
    mRestoreAudioConfigTimer.cancel();
    mRestoreAudioConfigTimer=null;
    mRestoreAudioConfigTimerMask=null;
  }
 else   if (null == mAudioMode) {
    AudioManager audioManager=getAudioManager();
    mAudioMode=audioManager.getMode();
    mIsSpeakerOn=audioManager.isSpeakerphoneOn();
  }
}

private static void backupAudioConfig ( ) { if ( null != mRestoreAudioConfigTimer ) { mRestoreAudioConfigTimer . cancel ( ) ; mRestoreAudioConfigTimer = null ; mRestoreAudioConfigTimerMask = null ; } else if ( null == mAudioMode ) { AudioManager audioManager = getAudioManager ( ) ; mAudioMode = audioManager . getMode ( ) ; mIsSpeakerOn = audioManager . isSpeakerphoneOn ( ) ; } }
back up the current audio config .
