Android ActionBar（ActionBar Compat）微调下拉列表？

我目前正在从事面向 ActionBar (ActionBarCompat) 的项目，我需要一些关于操作栏的澄清。

我正在使用这样的旋转器布局，

<Spinner 
        android:id="@+id/SpinnerList"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />

My code,

public class MainActivity extends ActionBarActivity implements  OnItemSelectedListener{
    private boolean mAlternateTitle = false;

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        ActionBar bar = getActionBar();
        bar.setNavigationMode(ActionBar.NAVIGATION_MODE_LIST);

        Spinner spinner = (Spinner) findViewById(R.id.SpinnerList);
        ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this, R.array.locations, android.R.layout.simple_spinner_item);
        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        spinner.setAdapter(adapter);
        spinner.setOnItemSelectedListener(this);
}
}

它在我的 Android Galaxy ace 中显示正常的旋转器。我需要如下所示的输出， 那个位置是android 2.3吗？请给建议。

thanks.

试试这个代码。在菜单/main.xml中：

<item
    android:id="@+id/menu_spinner1"
    android:showAsAction="always"
    android:orderInCategory="1"
    android:actionViewClass="android.widget.Spinner" >

在活动中：

private MenuItem mSpinnerItem1 = null;

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.


    MenuInflater mi=getMenuInflater();
    mi.inflate(R.menu.main, menu);
    mSpinnerItem1 = menu.findItem( R.id.menu_spinner1);
    View view1 = mSpinnerItem1.getActionView();
    if (view1 instanceof Spinner)
    {
        final Spinner spinner = (Spinner) view1;
        spinner.setAdapter(ad1);


        spinner.setOnItemSelectedListener(new OnItemSelectedListener() {

            @Override
            public void onItemSelected(AdapterView<?> arg0, View arg1,
                    int arg2, long arg3) {
                // TODO Auto-generated method stub

            }

            @Override
            public void onNothingSelected(AdapterView<?> arg0) {
                // TODO Auto-generated method stub

            }
        });

    }

    return true;
}