Android - Menu items are not shown in ActionBar to start app -

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i creating activity 2 fragments. implementing different menu items each fragment. having problem. sequence of error:

  • tab 1 - fragment 1 -> no buttons appear on actionbar menu
  • tab 2 - fragment 2 -> menu appears correctly
  • tab 1 - fragment 1 -> menu displayed

until pass fragment 2 , return fragment 1 icons of actionbar not shown. can error? thank you

fragment 1

public view oncreateview(layoutinflater inflater, viewgroup container,         bundle savedinstancestate) {      rootview = inflater.inflate(r.layout.fragment_listado, container, false);      declararobjetos();     iniciarbasedatos();     sonidos();     cargarlocalizacion();     reiniciarlistview();     pintarelementos();      sethasoptionsmenu(true);     modulo.getoverflowmenu(getactivity());     activitycompat.invalidateoptionsmenu((activity) context);      return rootview; }  public void onprepareoptionsmenu(menu menu) {      menuitemactualizarlista = menu.finditem(r.id.menuopcactualizarlista);     menuitembuscar = menu.finditem(r.id.menuopcbuscar);      menuitemactualizarlista.setvisible(true);     menuitembuscar.setvisible(true); }  public boolean onoptionsitemselected(menuitem item) {      switch (item.getitemid()) {      case r.id.menuopcactualizarlista:          reiniciarlistview();         return true;      case r.id.menuopcbuscar:          cargarbuscar();         return true;      default:         return super.onoptionsitemselected(item);     } }

menu

<menu xmlns:android="http://schemas.android.com/apk/res/android" >  <item     android:id="@+id/menuopcactualizarlista"     android:visible="false"/>  <item     android:id="@+id/menuopcbuscar"       android:icon="@drawable/icono_lupa"       android:visible="false"       android:showasaction="always" /> </menu>

you need inflate menu can show it. 

@override public void oncreateoptionsmenu(menu menu, menuinflater inflater) {     inflater.inflate(r.menu.mymenu, menu); }  @override public void onactivitycreated(bundle savedinstancestate) {     super.onactivitycreated(savedinstancestate);     modulo.getoverflowmenu(getactivity());     activitycompat.invalidateoptionsmenu(getactivity()); }

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