Signal-Android/res/layout/receive_key_activity.xml

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:fillViewport="true"
        android:background="@drawable/background_pattern_repeat">

    <FrameLayout
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:gravity="center">

        <LinearLayout android:paddingRight="16dip"
                      android:paddingLeft="16dip"
                      android:paddingTop="10dip"
                      android:layout_width="fill_parent"
                      android:layout_height="wrap_content"
                      android:layout_gravity="center"
                      android:orientation="vertical">

            <TextView style="@style/Registration.Description"
                      android:id="@+id/description_text"
                      android:layout_width="fill_parent"
                      android:layout_marginBottom="16dip"
                      android:layout_marginTop="16dip"/>

            <LinearLayout android:layout_height="wrap_content"
                          android:layout_width="match_parent"
                          android:layout_marginBottom="7dip"
                          android:orientation="horizontal">

                <Button android:id="@+id/cancel_button"
                        android:text="@android:string/cancel"
                        android:layout_width="0dp"
                        android:layout_height="wrap_content"
                        android:layout_weight="1"/>

                <Button android:id="@+id/ok_button"
                        android:layout_width="0dp"
                        android:layout_height="wrap_content"
                        android:layout_weight="1"
                        android:text="@string/receive_key_activity__complete"/>
            </LinearLayout>
        </LinearLayout>
    </FrameLayout>
</ScrollView>