<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/main_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#000000"
    tools:context="io.interactionlab.capimgdemo.FullscreenActivity">

    <RelativeLayout
        android:id="@+id/movableScreen"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_alignParentStart="true"
        android:layout_alignParentTop="true"
        android:background="#ffffff"
        android:orientation="horizontal">

    </RelativeLayout>
</RelativeLayout>