Android ActionBar: collapsible SearchView with action button

Question

How to build ActionBar with collapsible search view with single action item visible, when search view is expanded? To be more descriptive, this is what I need:

Answer 1

Simply you can do it like this

@Override
public boolean onCreateOptionsMenu(Menu menu) {
     getMenuInflater().inflate(R.menu.main, menu);
     MenuItem searchItem = menu.findItem(R.id.action_search);
     searchView = (SearchView) MenuItemCompat.getActionView(searchItem);
     searchView.setIconified(true); //to be opened collapsed
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch(item.getItemId()){

        case R.id.action_search:
            searchView.setIconified(false);// to Expand the SearchView when clicked
            return true;
    }    
    return false;
}

And at search item in menu.xml make

showAsAction="always"

Note: I am using android.support.v7.widget.SearchView but in your case it doesn't matter