samples/browseable/ElizaChat/res/layout/main.xml

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin"
    tools:context="com.example.android.wearable.elizachat.MainActivity$PlaceholderFragment"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/history"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

</ScrollView>