res/layout/selection_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:gravity="center_horizontal|top"
    android:orientation="vertical"
    android:paddingLeft="@dimen/alarm_picker_dialog_horizontal_margin"
    android:paddingRight="@dimen/alarm_picker_dialog_horizontal_margin"
    android:paddingTop="@dimen/alarm_picker_dialog_vertical_margin">

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/dismiss_alarm"
        android:textColor="@color/black"
        android:textSize="@dimen/header_font_size"
        android:layout_marginBottom="@dimen/alarm_picker_margin_bottom"/>

    <ListView
        android:id="@android:id/list"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:dividerHeight="0dp"
        android:divider="@null"/>

    <Button
        android:id="@+id/cancel_button"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@android:string/cancel"
        android:clickable="true"
        android:gravity="end"
        android:background="@android:color/transparent"
        android:textColor="@android:color/holo_blue_light"/>

</LinearLayout>