res/layout/activity_updater.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:layout_width="match_parent"
              android:layout_height="match_parent"
              android:background="@color/background"
              android:animateLayoutChanges="true"
              android:orientation="vertical">

    <include layout="@layout/header"/>

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

</LinearLayout>