GridView item list selector for multiple items not working in Android

I want to draw selector on long press as shown in the picture. When I do long press on one item, the CAB menu is activated. But the list selector indicator goes off once after clicking. I want that list selectors to be active till the CAB menu is active for allowing multiple selection. And the color should toggle if I do double tap. This code works as a flicker when I click on it. Any one faced similar thing? Is there a hack to bring this functionality?

Gridview with multiple selection:

GridView setchoice in my OnCreate:

gridView.setChoiceMode(GridView.CHOICE_MODE_MULTIPLE_MODAL);
gridView.setMultiChoiceModeListener(new MultiChoiceModeListener());

This is working fine:

gridView.setOnItemClickListener(new OnItemClickListener() {
    @Override
    public void onItemClick(AdapterView<?> parent, View v,
            int position, long id) {

    ImageView iv = (ImageView) v
                        .findViewById(R.id.imageview2);
                ViewGroup gridChild = (ViewGroup) gridView
                        .getChildAt(position);
                ViewGroup gridGrandChild = (ViewGroup) gridChild
                        .getChildAt(0);
                ViewGroup gridGreatGrandChild = (ViewGroup) gridGrandChild
                        .getChildAt(0);
                int childSize = gridGreatGrandChild.getChildCount();
                if (iv.getId() == gridGreatGrandChild.getChildAt(1)
                        .getId()) {
                    if (iv.getVisibility() == 4)
                        iv.setVisibility(View.VISIBLE);
                    else
                        iv.setVisibility(View.INVISIBLE);
                }
}});

I am trying to implement the same code inside the MultiChoiceModeListener() class after the CAB menu is activated. Copied the same code inside

public void