testapps/res/layout/self_managed_sample_main.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:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    <CheckBox
        android:id="@+id/checkIfPermittedBeforeCalling"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/checkIfPermittedBeforeCallingButton" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="This app provides two sample implementations of the self-managed ConnectionService API.  Use this UI to add simulated self-managed calls:" />

    <RadioGroup
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        <RadioButton
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Sample Source 1"
            android:id="@+id/useAcct1Button"
            android:background="@color/test_call_a_color"/>
        <RadioButton
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Sample Source 2"
            android:id="@+id/useAcct2Button"
            android:background="@color/test_call_b_color"/>
    </RadioGroup>

    <RadioGroup
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        <RadioButton
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Video Call"
            android:id="@+id/videoCallButton"/>
        <RadioButton
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Audio Call"
            android:id="@+id/audioCallButton"/>
    </RadioGroup>

    <LinearLayout android:orientation="horizontal"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Number:" />
        <EditText
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/phoneNumber"
            android:text="tel:555-1212"/>
    </LinearLayout>

    <LinearLayout android:orientation="horizontal"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content">

        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Outgoing Call"
            android:id="@+id/placeOutgoingCallButton" />
        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Incoming Call"
            android:id="@+id/placeIncomingCallButton" />
        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Handover From"
            android:id="@+id/handoverFrom" />
    </LinearLayout>

    <ListView
        android:id="@+id/callList"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:listSelector="@null"
        android:divider="@null" />
</LinearLayout>