Get system screen brightness

Last exercise describe how to "Change system screen brightness". If you want to get the current setting of system screen brightness, you can use the code:

        try {
   curBrightnessValue=android.provider.Settings.System.getInt(
     getContentResolver(), android.provider.Settings.System.SCREEN_BRIGHTNESS);
  } catch (SettingNotFoundException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }