DrawerLayout not clickable after Fragment load

I followed the android guideline and completed a layout looks like this:

    android:id="@+id/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:orientation="vertical">

        <android.support.v7.widget.Toolbar
            android:id= "@+id/my_awesome_toolbar"
            android:layout_height="wrap_content"
            android:layout_width="match_parent"
            />

        <FrameLayout
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:id="@+id/fragmentContainer"/>

    </LinearLayout>

    <LinearLayout
        android:id="@+id/left_drawer_view"
        android:layout_width="250dp"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:layout_gravity="start">

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="2"
            android:orientation="vertical">
            <ImageView
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:src="@drawable/wall"
                android:layout_margin="0dp"
                android:padding="0dp"
                android:scaleType="center"
                />

            <ImageView
                android:layout_width="60dp"
                android:layout_height="60dp"
                android:src="@drawable/placeholder"
                android:layout_margin="16dp"
                android:layout_alignParentTop="true"
                android:layout_alignParentLeft="true"
                android:layout_alignParentStart="true" />

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="IGuessI'mUsername?"
                android:textColor="#fff"
                android:layout_alignParentBottom="true"
                android:layout_alignParentLeft="true"
                android:layout_alignParentStart="true"
                android:layout_margin="10dp"/>
        </RelativeLayout>
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="5"
            android:orientation="vertical"
            android:background="#fff"
            android:id="@+id/left_drawer_item"
            >

            <TextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:id="@+id/side_item_home"
                android:text="Home"
                android:drawablePadding="5dp"
                android:padding="5dp"
                android:gravity="center_vertical"
                android:drawableLeft="@drawable/ic_menu_home"/>

            <TextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="Activities"
                android:drawablePadding="5dp"
                android:id="@+id/side_item_activities"
                android:padding="5dp"
                android:gravity="center_vertical"
                android:drawableLeft="@drawable/ic_menu_search_holo_light"/>

            <TextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="Settings"
                android:drawablePadding="5dp"
                android:id="@+id/side_item_settings"
                android:padding="5dp"
                android:gravity="center_vertical"
                android:drawableLeft="@drawable/ic_action_settings"
                />


        </LinearLayout>

    </LinearLayout>


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

FYI, I did not use Android.R.Id, but my own R.id.fragmentContainer to load the fragments. But apparently, the drawer layout is under the fragment loaded in the FrameLayout. If I click the item on the drawerlayout, the fragments receive the gesture, not the drawerlayout, although it still display correctly.

I need your two cents, guys. All answers and comments are appreciated.