testapps/ImsTestService/res/layout/activity_registration.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
  ~ Copyright (C) 2017 The Android Open Source Project
  ~
  ~ Licensed under the Apache License, Version 2.0 (the "License");
  ~ you may not use this file except in compliance with the License.
  ~ You may obtain a copy of the License at
  ~
  ~      http://www.apache.org/licenses/LICENSE-2.0
  ~
  ~ Unless required by applicable law or agreed to in writing, software
  ~ distributed under the License is distributed on an "AS IS" BASIS,
  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  ~ See the License for the specific language governing permissions and
  ~ limitations under the License
  -->

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:paddingLeft="4dp">

    <LinearLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:paddingLeft="4dp">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/reg_text_reg_tech"/>
        <Spinner
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/reg_tech_selector"/>
    </LinearLayout>
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/reg_registered_button"
        android:id="@+id/reg_registered_button"/>
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/reg_registering_button"
        android:id="@+id/reg_registering_button"/>

    <View
        android:layout_width="match_parent"
        android:layout_height= "1dp"
        android:paddingRight="4dp"
        android:background="?android:attr/listDivider" />

    <include layout="@layout/construct_imsreasoninfo"
             android:id="@+id/deregistered_imsreasoninfo" />
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/reg_deregistered_button"
        android:id="@+id/reg_deregistered_button"/>

    <View
        android:layout_width="match_parent"
        android:layout_height= "1dp"
        android:paddingRight="4dp"
        android:background="?android:attr/listDivider" />

    <include layout="@layout/construct_imsreasoninfo"
             android:id="@+id/regchangefail_imsreasoninfo" />
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/reg_changefailed_button"
        android:id="@+id/reg_changefailed_button"/>

    <View
        android:layout_width="match_parent"
        android:layout_height= "1dp"
        android:paddingRight="4dp"
        android:background="?android:attr/listDivider" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textStyle="bold"
        android:text="Registration Callback Listener Events:"/>

    <ListView
        android:id="@+id/reg_cb_list"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>
</LinearLayout>