packages\apps\Calendar\src\com\android\calendar\Utils.java

/**

    * One of the Agenda/Day/Week/Month view types

    */

   public interface ViewType {

       final int DETAIL = -1;

       final int CURRENT = 0;

       final int AGENDA = 1;

       final int DAY = 2;

        final int WEEK = 3;

     finalint MONTH = 4;

       final int EDIT = 5;

       final int MAX_VALUE = 5;

    }

 public static int getViewTypeFromIntentAndSharedPref(Activity activity){

….

// Default to the last view

       //modify calendar default show month lhw start

//return prefs.getInt(GeneralPreferences.KEY_START_VIEW,GeneralPreferences.DEFAULT_START_VIEW);