session-android/res/layout/auto_initiate_activity.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:layout_marginLeft="16dip"
    android:layout_marginRight="16dip">

    <TextView android:id="@+id/description_text"
              android:layout_width="fill_parent"
              android:layout_height="wrap_content"
              android:layout_marginBottom="5px"
              android:text="You have received a message from someone who supports TextSecure encrypted sessions.  Would you like to initiate a key exchange so you can communicate securely?"/>

    <LinearLayout android:layout_width="fill_parent"
                  android:layout_height="wrap_content"
                  android:layout_marginTop="10px"
                  android:orientation="horizontal">

        <Button android:id="@+id/initiate_button"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Initiate Exchange"
                android:gravity="center"/>

        <Button android:id="@+id/cancel_button"
                android:text="Cancel"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:gravity="center"/>
    </LinearLayout>
</LinearLayout>