public Builder addSubButton(Drawable drawable,int[] twoColors,String string){
  if (drawables == null)   drawables=new ArrayList<>();
  drawables.add(drawable);
  if (colors == null)   colors=new ArrayList<>();
  colors.add(twoColors);
  if (strings == null)   strings=new ArrayList<>();
  strings.add(string);
  return this;
}

public Builder addSubButton ( Drawable drawable , int [ ] twoColors , String string ) { if ( drawables == null ) drawables = new ArrayList < > ( ) ; drawables . add ( drawable ) ; if ( colors == null ) colors = new ArrayList < > ( ) ; colors . add ( twoColors ) ; if ( strings == null ) strings = new ArrayList < > ( ) ; strings . add ( string ) ; return this ; }
add a sub button with 3 params .
