Fancycoverflow Layout, how to put gallery in the middle of vertical direction

This is the link of Fancycoverflow: Fancycoverflow

I want to put the image gallery in the middle of vertical direction. And make the image in gallery as large as possible. But the image in the gallery is always half size in height.

This is my layout:

<LinearLayout xmlns:android="http://ift.tt/nIICcg"
          xmlns:tools="http://ift.tt/LrGmb4"
          android:orientation="vertical"
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          android:background="@drawable/image_screen_background"
          android:layout_weight="1"
          >

    <TextView
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_weight="40"
    android:background="#FF0000"/>


    <com.example.demo.FancyCoverFlow
        xmlns:fcf="http://ift.tt/GEGVYd"
        android:id="@+id/fancyCoverFlow"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        fcf:maxRotation="45"
        fcf:unselectedAlpha="0.3"
        fcf:unselectedSaturation="0.0"
        fcf:unselectedScale="0.4"
        fcf:scaleDownGravity="0.5"
        android:layout_weight="50"
        android:background="#0000FF"
        />
    <TextView
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_weight="10"
    android:background="#00FF00"/>

Would you guys help me out?