Estoy tratando de usar el cajón de navegación con la barra de herramientas, pero al presionar el botón de navegación no se activa el controlador onOptionsItemSelected y la lista no se abre.

El botón Buscar, sin embargo, activa onOptionsItemSelected.

Este es mi código y xml:

EDITAR: también onDrawerClosed () y onDrawerOpened () no se llaman

MainActivity.java:

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

mToolbar = (Toolbar) findViewById(R.id.tool_bar);
setSupportActionBar(mToolbar);

mAdapter =  new ViewPagerAdapter(getSupportFragmentManager(),Titles, numOfTabs);

// Assigning ViewPager View and setting the adapter
mPager = (ViewPager) findViewById(R.id.pager);
mPager.setAdapter(mAdapter);

// Assigning the Sliding Tab Layout View
mTabs = (SlidingTabLayout) findViewById(R.id.tabs);
mTabs.setDistributeEvenly(true); // To make the Tabs Fixed set this true, This makes the tabs Space Evenly in Available width

mTabs.setCustomTabColorizer(new SlidingTabLayout.TabColorizer() {
    @Override
    public int getIndicatorColor(int position) {
        return getResources().getColor(R.color.augury_white);
    }
});

// Setting the ViewPager For the SlidingTabsLayout
mTabs.setViewPager(mPager);

// Set navigation drawer
mPlanetTitles = getResources().getStringArray(R.array.planets_array);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerList = (ListView) findViewById(R.id.left_drawer);

// Set the adapter for the list view
mDrawerList.setAdapter(new ArrayAdapter<String>(this, R.layout.drawer_list_item, mPlanetTitles));
// Set the list's click listener
mDrawerList.setOnItemClickListener(new DrawerItemClickListener());

getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);

mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
            mToolbar , R.string.drawer_open, R.string.drawer_close) {

        /** Called when a drawer has settled in a completely closed state. */
        public void onDrawerClosed(View view) {
            super.onDrawerClosed(view);
            getActionBar().setTitle(mTitle);
            invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
            syncState();
        }

        /** Called when a drawer has settled in a completely open state. */
        public void onDrawerOpened(View drawerView) {
            super.onDrawerOpened(drawerView);
            getActionBar().setTitle(mDrawerTitle);
            invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
            syncState();
        }
    };

// Set the drawer toggle as the DrawerListener
mDrawerLayout.setDrawerListener(mDrawerToggle);

}

activity_main.xml:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity">

    <include
        android:id="@+id/tool_bar"
        layout="@layout/tool_bar"
        android:layout_height="wrap_content"
        android:layout_width="match_parent"
        />

    <com.augury.mobile.auguryandroid.SlidingTabLayout
        android:id="@+id/tabs"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:elevation="2dp"
        android:background="@color/augury_blue"/>

    <android.support.v4.view.ViewPager
        android:id="@+id/pager"
        android:layout_height="match_parent"
        android:layout_width="match_parent"
        android:layout_weight="1">

    <android.support.v4.widget.DrawerLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        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="240dp"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:choiceMode="singleChoice"
        android:divider="@android:color/transparent"
        android:dividerHeight="0dp"
        android:background="#111"/>

    </android.support.v4.widget.DrawerLayout>
    </android.support.v4.view.ViewPager>

</LinearLayout>

¡¡Gracias!!