content_bottom_sheet.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/bottomSheetLayout"
    android:layout_width="match_parent"
    android:layout_height="300dp"
    android:background="@android:color/holo_orange_light"
    android:padding="@dimen/activity_vertical_margin"
    app:behavior_hideable="true"
    app:behavior_peekHeight="60dp"
    app:layout_behavior="@string/bottom_sheet_behavior">

    <TextView
        android:id="@+id/bottomSheetHeading"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/text_expand_me"
        android:textAppearance="@android:style/TextAppearance.Large" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/bottomSheetHeading"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="@dimen/activity_horizontal_margin"
        android:text="@string/text_welcome_message"
        android:textAppearance="@android:style/TextAppearance.Large" />
</RelativeLayout>