XML : how to keep my navigation drawer always on top of everything? ANDROID

is there any way to keep my navigation bar on top of everything or overlay or overlap on everything in my activity?

I have this code in my main_activity.xml

  <android.support.v4.widget.DrawerLayout      android:layout_width="match_parent"      android:layout_height="0dp"      android:id="@+id/drawer_layout"      android:layout_weight="1"      >      <FrameLayout          android:layout_width="match_parent"          android:layout_height="match_parent"          android:id="@+id/frame_container"          >      </FrameLayout>        <android.support.v4.view.ViewPager          android:id="@+id/pager"          android:layout_width="match_parent"          android:layout_height="0dp"          android:layout_weight="1"          />        <!-- Listview to display slider menu -->      <ListView          android:id="@+id/list_slidermenu"          android:layout_width="240dp"          android:layout_height="match_parent"          android:layout_gravity="start"          android:choiceMode="singleChoice"          android:listSelector="@drawable/list_selector"          android:background="#FFF"/>    </android.support.v4.widget.DrawerLayout>    <android.support.design.widget.TabLayout      android:id="@+id/tab_layout"      android:layout_width="match_parent"      android:layout_height="wrap_content"      android:background="#FFF"      android:minHeight="?attr/actionBarSize"      app:tabIndicatorHeight="5dp"      app:tabIndicatorColor="@color/colorPrimary"      />    </LinearLayout>    

The problem I have now is that my tablayout will show all the time even I have show my navigation drawer. Anyone know how to help me with this?

Your answer will be appreciated.