public AdaptadorTabsPrincipales(Android.Support.V4.App.FragmentManager fm, MenuActivity menuActivity, string indentificador) : base(fm)
 {
     this.menuActivity   = menuActivity;
     this.indentificador = indentificador;
 }
 public AdaptadorTabsPrincipales(Android.Support.V4.App.FragmentManager fm, MenuActivity menuActivity, Activity a) : base(fm)
 {
     Actividad = a;
 }