Mein ActionMode erweitert das Menü in der onCreateActionMode-Methode nicht ⇐ Android

[Anonymous]

Ich versuche, einen Menüpunkt in einer ActionBar durch ActionMode anzuzeigen, aber weder der ActionMode noch der Menüpunkt werden nicht angezeigt.

Erstelle den LongClickListener meiner ListView auf der ProvasActivity.

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    this.listView.setLongClickable(true);
this.listView.setOnItemLongClickListener(new OnItemLongClickListener() {
public boolean onItemLongClick(AdapterView parent, View view,
int position, long id) {
Log.d(null, "ListView Pressionado");

// O action mode está ativado no momento?
if (mActionMode != null) {
// Cancela o evento
return false;
}
selectedItem = position;

mActionMode = ProvasActivity.this
.startActionMode(mActionModeCallback);
view.setSelected(true);
return true;
}
});

private ActionMode.Callback mActionModeCallback = new ActionMode.Callback() {

@Override
public boolean onCreateActionMode(ActionMode mode, Menu menu) {

// Infla o recurso do menu a ser exibido
MenuInflater inflater = mode.getMenuInflater();
inflater.inflate( R.menu.linha_selecionada, menu );

Log.d(null, "Menu Inflado");

return false;
}

@Override
public boolean onActionItemClicked(ActionMode mode, MenuItem item) {

switch (item.getItemId()) {
case R.id.action_remover:
show();
// Fecha a Action quando executada
mode.finish();
break;

default:
break;
}

return false;
}

@Override
public void onDestroyActionMode(ActionMode mode) {
// Anula o ActionMode
mActionMode = null;
selectedItem = -1;

}

@Override
public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
return false;
}

private void show() {
Toast.makeText(ProvasActivity.this,
"show", Constants.TEMPO_TOAST).show();
Log.d(null, "show()");
}

};

Mein Menü zur Anzeige des ActionMode-Elements (layout/menu/linha_selecionada):

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Die Ansicht meiner ProvasActivity (layout/provas_armazenadas.xml):

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Ich lese gerade das Vogella-Tutorial durch.

http://www.vogella.com/tutorials/Androi ... ticle.html