hostage/res/layout/activity_bluetooth.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:id="@+id/bluetoothLayout" >

    <ProgressBar
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/bluetoothProgressBar"
        android:layout_gravity="center_horizontal"
        android:layout_centerVertical="true"
        android:layout_centerHorizontal="true"
        android:indeterminate="true"
        android:indeterminateOnly="true"
        android:textAlignment="center"
        android:visibility="gone"
        android:layout_marginBottom="10dp" />

    <ListView
        android:id="@+id/bluetoothListView"
        android:visibility="gone"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_below="@+id/bluetoothInfoText"
        android:layout_centerHorizontal="true"
        android:paddingTop="2dp" />

    <TextView
        android:id="@+id/bluetoothInfoText"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:gravity="center|top"
        android:layout_below="@+id/bluetoothProgressBar"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="10dp"
        android:visibility="visible" />

</RelativeLayout>