Android Navigation Drawer Activity

Basically I have a navigation drawer base class which will be extended by multiple activities. Here is the code on how I set up the navigation drawer in Android:

public class NavigationDrawer extends Activity {
Context context;
private String[] drawerListViewItems;
private DrawerLayout drawerLayout;
private ListView drawerListView;
private ActionBarDrawerToggle actionBarDrawerToggle;

protected DrawerLayout fullLayout;
protected FrameLayout actContent;

@Override
public void setContentView(final int layoutResID) {
    fullLayout = (DrawerLayout) getLayoutInflater().inflate(
            R.layout.navigation_drawer, null); // Your base layout here
    actContent = (FrameLayout) fullLayout.findViewById(R.id.act_content);
    getLayoutInflater().inflate(layoutResID, actContent, true);
    super.setContentView(fullLayout);

    // get list items from strings.xml
    drawerListViewItems = getResources().getStringArray(R.array.items);
    // get ListView defined in activity_main.xml
    drawerListView = (ListView) findViewById(R.id.left_drawer);

    // Set the adapter for the list view
    drawerListView.setAdapter(new ArrayAdapter<String>(this,
            R.layout.drawer_listview_item, drawerListViewItems));

    // App Icon
    drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);

    actionBarDrawerToggle = new ActionBarDrawerToggle(this, /* host Activity */
    drawerLayout, /* DrawerLayout object */
    R.drawable.ic_drawer, /* nav drawer icon to replace 'Up' caret */
    R.string.drawer_open, /* "open drawer" description */
    R.string.drawer_close /* "close drawer" description */
    );

    // Set actionBarDrawerToggle as the DrawerListener
    drawerLayout.setDrawerListener(actionBarDrawerToggle);

    getActionBar().setDisplayHomeAsUpEnabled(true);

    // just styling option add shadow the right edge of the drawer
    drawerLayout.setDrawerShadow(R.drawable.drawer_shadow,
            GravityCompat.START);
    drawerListView.setOnItemClickListener(new DrawerItemClickListener());
}

@Override
public void onConfigurationChanged(Configuration newConfig) {
    super.onConfigurationChanged(newConfig);
    actionBarDrawerToggle.onConfigurationChanged(newConfig);
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {

    // call ActionBarDrawerToggle.onOptionsItemSelected(), if it returns
    // true
    // then it has handled the app icon touch event
    if (actionBarDrawerToggle.onOptionsItemSelected(item)) {
        return true;
    }
    return super.onOptionsItemSelected(item);
}

@Override
protected void onPostCreate(Bundle savedInstanceState) {
    super.onPostCreate(savedInstanceState);
    // Sync the toggle state after onRestoreInstanceState has occurred.
    actionBarDrawerToggle.syncState();
}

private class DrawerItemClickListener implements
        ListView.OnItemClickListener {
    @Override
    public void onItemClick(AdapterView parent, View view, int position,
            long id) {
        switch (position) {
        case 1:
            Intent dashboardIntent = new Intent(context, Dashboard.class);
            startActivity(dashboardIntent);
            break;
        case 2:
            break;
        }
        drawerLayout.closeDrawer(drawerListView);
    }
}
}

And the XML file for the navigation drawer:

<android.support.v4.widget.DrawerLayout xmlns:android="http://ift.tt/nIICcg"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent" >

<!-- The navigation drawer -->

<ListView
    android:id="@+id/left_drawer"
    android:layout_width="200dp"
    android:layout_height="match_parent"
    android:layout_gravity="start"
    android:background="#111" />

<FrameLayout 
    android:id="@+id/act_content"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

</FrameLayout>
</android.support.v4.widget.DrawerLayout>

When I slide the navigation drawer out, it did shows the menu items. However, when I try to click on either one of the menu item, the drawer just slide back to hide but not selecting any menu items.

I wonder which part of my codes went wrong. Thanks in advance.