java - android searchview setOnActionExpandListener on Honeycomb 3.2

Question

I'm developing an app for Android 3.2 and greater with android-support-v4. I need to implement OnActionExpandListener for "intercept" when SearchView in the actionbar is expanded and when is collapsed. My code for Android 4.0 and higher it's ok, but for 3.2 no.

menu.xml

<item android:id="@+id/menu_search"
    android:title="@string/menu_search"
    android:icon="@android:drawable/ic_menu_search"
    android:showAsAction="collapseActionView|always"
    android:actionViewClass="android.widget.SearchView" />

MyActivity.java

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.reader, menu);

    final MenuItem searchMI = menu.findItem(R.id.menu_search);
    if(searchView == null) {
        //searchView = (SearchView) searchMI.getActionView();
        searchView = (SearchView) MenuItemCompat.getActionView(searchMI);
        searchView.setOnQueryTextListener(this);
        searchView.setOnSuggestionListener(this);
        searchView.setOnCloseListener(new OnCloseListener() {

            @Override
            public boolean onClose() {
                //some code
                return false;
            }
        });
    }


    int currentapiVersion = android.os.Build.VERSION.SDK_INT;
    if (currentapiVersion <= android.os.Build.VERSION_CODES.HONEYCOMB_MR2) {
        MenuItemCompat.setShowAsAction(searchMI, MenuItemCompat.SHOW_AS_ACTION_COLLAPSE_ACTION_VIEW | MenuItemCompat.SHOW_AS_ACTION_ALWAYS);
        MenuItemCompat.setOnActionExpandListener(searchMI, new OnActionExpandListener() {

            /* (non-Javadoc)
             * @see android.support.v4.view.MenuItemCompat.OnActionExpandListener#onMenuItemActionExpand(android.view.MenuItem)
             */
            @Override
            public boolean onMenuItemActionExpand(MenuItem item) {
                Toast.makeText(getApplicationContext(), "onMenuItemActionExpand", Toast.LENGTH_SHORT).show();
                return true;
            }

            /* (non-Javadoc)
             * @see android.support.v4.view.MenuItemCompat.OnActionExpandListener#onMenuItemActionCollapse(android.view.MenuItem)
             */
            @Override
            public boolean onMenuItemActionCollapse(MenuItem item) {
                Toast.makeText(getApplicationContext(), "onMenuItemActionExpand", Toast.LENGTH_SHORT).show();
                return true;
            }
        });
    } else {
        searchMI.setOnActionExpandListener(new MenuItem.OnActionExpandListener() {

            @Override
            public boolean onMenuItemActionExpand(MenuItem item) {
                Toast.makeText(getApplicationContext(), "MenuItem#onMenuItemActionExpand", Toast.LENGTH_SHORT).show();
                return true;
            }

            @Override
            public boolean onMenuItemActionCollapse(MenuItem item) {
                Toast.makeText(getApplicationContext(), "MenuItem#onMenuItemActionExpand", Toast.LENGTH_SHORT).show();
                return true;
            }
        });
    }
}

Why, for Honeycomb, methods of listener is not invoked?

Thank you so much.

Answer 1

You probably missed the fact (like I did) that `MenuItemCompat.OnActionExpandListener' interface has a static implementation, and is not an instance method.

So, if you have a class that implements MenuItemCompat.OnActionExpandListener then in that class you need to install it as the listener like this:

    MenuItem menuItem =  menu.findItem(R.id.search);
    if (menuItem != null) {
        MenuItemCompat.setOnActionExpandListener(menuItem,this);
        MenuItemCompat.setActionView(menuItem, mSearchView);
    }

The same paradigm applies to setActionView ... rather than invoke menuItem.setActionView(this), you pass the menuItem as the first argument to the static version MenuItemCompat.setActionView and follow with the other argument(s).