<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/darkBlue"
    tools:context=".NavigationFragment">

    <FrameLayout
        android:id="@+id/nav_frame_layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <SurfaceView
            android:id="@+id/nav_surface"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_margin="20dp"/>

    </FrameLayout>


</FrameLayout>