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

</LinearLayout>

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

  <ListView android:id="@+id/devicesListView"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="center"/>

</LinearLayout>

Add ListView component to overview activity
Add ListView component to overview activity
