<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:layout_width="match_parent"
              android:layout_height="match_parent"
              android:background="@android:color/white"
              android:orientation="vertical" >

    <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="48dp"
            android:background="@color/theme_positive_color" >

        <TextView
                android:id="@+id/txt_header_title"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignWithParentIfMissing="false"
                android:layout_centerHorizontal="true"
                android:layout_centerInParent="true"
                android:layout_centerVertical="true"
                android:layout_marginEnd="30dp"
                android:layout_marginStart="30dp"
                android:gravity="center_vertical"
                android:singleLine="true"
                android:text="ADD TO GROUP"
                android:textAlignment="center"
                android:textColor="@color/white"
                android:textSize="18sp" />
    </RelativeLayout>

    <GridView
            android:id="@+id/list_groups"
            android:listSelector="@android:drawable/list_selector_background"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:fadingEdge="none"
            android:numColumns="1"
            android:scrollbars="none" >
    </GridView>

</LinearLayout>