res/layout/preference_radio_with_extra_widget.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
  ~ Copyright (C) 2019 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
  -->
<!-- This file is copied from preference_radio.xml with modification to
     support an extra clickable icon on the opposite side horizontally -->
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:settings="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="?android:attr/selectableItemBackground"
    android:gravity="center_vertical"
    android:minHeight="?android:attr/listPreferredItemHeightSmall"
    android:paddingEnd="?android:attr/listPreferredItemPaddingEnd">

    <LinearLayout
        android:id="@android:id/widget_frame"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:gravity="center"
        android:minWidth="56dp"
        android:layout_marginEnd="16dp"
        android:orientation="vertical" />

    <LinearLayout
        android:id="@+id/icon_frame"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:gravity="center_vertical"
        android:minWidth="32dp"
        android:orientation="horizontal"
        android:layout_marginEnd="16dp"
        android:paddingTop="4dp"
        android:paddingBottom="4dp">
        <androidx.preference.internal.PreferenceImageView
            android:id="@android:id/icon"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            settings:maxWidth="@dimen/secondary_app_icon_size"
            settings:maxHeight="@dimen/secondary_app_icon_size" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:orientation="vertical"
        android:paddingTop="16dp"
        android:paddingBottom="16dp">

        <TextView android:id="@android:id/title"
                  android:layout_width="wrap_content"
                  android:layout_height="wrap_content"
                  android:singleLine="true"
                  android:textAppearance="?android:attr/textAppearanceListItem"
                  android:ellipsize="marquee"
                  android:fadingEdge="horizontal" />

        <TextView android:id="@android:id/summary"
                  android:layout_width="match_parent"
                  android:layout_height="wrap_content"
                  android:layout_weight="1"
                  android:textAppearance="?android:attr/textAppearanceSmall"
                  android:textAlignment="viewStart"
                  android:textColor="?android:attr/textColorSecondary" />
    </LinearLayout>
    <LinearLayout
        android:id="@+id/radio_extra_widget_container"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:orientation="horizontal"
        android:gravity="center_vertical">
        <View
            android:id="@+id/radio_extra_widget_divider"
            android:layout_width="@dimen/vertical_divider_width"
            android:layout_height="match_parent"
            android:layout_marginTop="36dp"
            android:layout_marginBottom="36dp"
            android:layout_marginStart="8dp"
            android:background="?android:attr/dividerVertical" />
        <ImageView
            android:id="@+id/radio_extra_widget"
            android:layout_width="wrap_content"
            android:layout_height="fill_parent"
            android:paddingStart="16dp"
            android:paddingEnd="16dp"
            android:src="@drawable/ic_settings_about"
            android:contentDescription="@string/information_label"
            android:layout_gravity="center"
            android:background="?android:attr/selectableItemBackground" />
    </LinearLayout>

</LinearLayout>