code: public static void apply(Activity activity, int viewId, Face type){
          TextView text = (TextView) activity.findViewById(viewId);
          if(text != null)
              apply(text, type);
      }
docs: Apply a typeface to a given view by id
  
  @param activity      the activity in which the textview resides
  @param viewId        the id of the textview you want to style
  @param type          the typeface code to apply