如何知道操作栏菜单何时展开？

Question

I have a plain action bar menu like this:

This is what it looks like in Java:

getActionBar().setNavigationMode(ActionBar.NAVIGATION_MODE_LIST);

ActionBar.OnNavigationListener navigationListener = new OnNavigationListener() {
    @Override
    public boolean onNavigationItemSelected(int itemPosition, long itemId) {
        //when an item is selected (i.e local/My Places/etc)
        return false;
    }
};

ArrayAdapter<String> adapter = new ArrayAdapter<String>(getBaseContext(), android.R.layout.simple_spinner_dropdown_item, new String[] { "Local", "My Places", "Checkins", "Latitude" });

getActionBar().setListNavigationCallbacks(adapter, navigationListener);

The callback for when an item is selected works fine, but I want a callback for when the dropdown is opened/closed.

I've looked at ActionBar.OnMenuVisibilityListener but the following prints nothing in my console.

ActionBar.OnMenuVisibilityListener listener = new ActionBar.OnMenuVisibilityListener() {
    @Override
    public void onMenuVisibilityChanged(boolean isVisible) {
        System.out.println("hello world!");
    };
};

getActionBar().addOnMenuVisibilityListener(listener);

What can I try next?

Answer 1

Recently I face the same task. And I use the same method to show Spinner .

But to solve this I have to replace this Spinner with custom one. I remove this code and put own Spinner through xml layout of my activity.

<com.company.yourapp.View.MenuSpinner
        android:id="@+id/catalogue_menu_spinner"
        android:layout_width="wrap_content"
        android:layout_height="?attr/actionBarSize"
        android:layout_alignParentLeft="true"
        android:layout_below="@id/catalogue_status_bar"
        android:background="@null"
        android:layout_marginLeft="60dp" />

Class that notify me when menu is showed ( MenuSpinner in code above) I get from this question.

I hope my answer will help someone who like me stuck on this.