linphone-android/app/src/main/res/layout/settings_advanced_fragment.xml

<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">

    <data>
        <import type="android.view.View" />
        <variable
            name="backClickListener"
            type="View.OnClickListener" />
        <variable
            name="viewModel"
            type="org.linphone.ui.main.settings.viewmodel.SettingsViewModel" />
    </data>

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="?attr/color_main2_000">

        <ImageView
            android:id="@+id/back"
            android:onClick="@{backClickListener}"
            android:layout_width="wrap_content"
            android:layout_height="0dp"
            android:adjustViewBounds="true"
            android:padding="15dp"
            android:src="@drawable/caret_left"
            android:contentDescription="@string/content_description_go_back_icon"
            app:tint="?attr/color_main1_500"
            app:layout_constraintBottom_toBottomOf="@id/title"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="@id/title" />

        <androidx.appcompat.widget.AppCompatTextView
            style="@style/main_page_title_style"
            android:id="@+id/title"
            android:layout_width="0dp"
            android:layout_height="@dimen/top_bar_height"
            android:layout_marginStart="10dp"
            android:layout_marginEnd="10dp"
            android:text="@string/settings_advanced_title"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toEndOf="@id/back"
            app:layout_constraintTop_toTopOf="parent"/>

        <ScrollView
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:fillViewport="true"
            android:background="?attr/color_grey_100"
            app:layout_constraintTop_toBottomOf="@id/title"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintEnd_toEndOf="parent">

            <androidx.constraintlayout.widget.ConstraintLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content">

                <com.google.android.material.materialswitch.MaterialSwitch
                    style="@style/material_switch_style"
                    android:id="@+id/keep_alive_service_switch"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_marginTop="20dp"
                    android:layout_marginEnd="16dp"
                    android:checked="@{viewModel.keepAliveThirdPartyAccountsService}"
                    android:onClick="@{() -> viewModel.toggleKeepAliveThirdPartyAccountService()}"
                    app:layout_constraintEnd_toEndOf="parent"
                    app:layout_constraintTop_toTopOf="parent"/>

                <androidx.appcompat.widget.AppCompatTextView
                    style="@style/settings_title_style"
                    android:onClick="@{() -> viewModel.toggleEnableVideoFec()}"
                    android:id="@+id/enable_fec_title"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_marginStart="16dp"
                    android:layout_marginEnd="10dp"
                    android:text="@string/settings_calls_enable_fec_title"
                    android:maxLines="2"
                    android:ellipsize="end"
                    android:visibility="@{viewModel.videoEnabled ? View.VISIBLE : View.GONE}"
                    app:layout_constraintTop_toTopOf="@id/enable_fec_switch"
                    app:layout_constraintBottom_toBottomOf="@id/enable_fec_switch"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintEnd_toStartOf="@id/enable_fec_switch"/>

                <com.google.android.material.materialswitch.MaterialSwitch
                    style="@style/material_switch_style"
                    android:id="@+id/enable_fec_switch"
                    android:onClick="@{() -> viewModel.toggleEnableVideoFec()}"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_marginTop="20dp"
                    android:layout_marginEnd="16dp"
                    android:visibility="@{viewModel.videoEnabled ? View.VISIBLE : View.GONE}"
                    android:enabled="@{viewModel.videoEnabled}"
                    android:checked="@{viewModel.videoEnabled &amp;&amp; viewModel.videoFecEnabled}"
                    app:layout_constraintEnd_toEndOf="parent"
                    app:layout_constraintTop_toBottomOf="@id/keep_alive_service_switch" />

                <androidx.appcompat.widget.AppCompatTextView
                    style="@style/header_style"
                    android:id="@+id/push_notifications_title"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_marginStart="16dp"
                    android:layout_marginEnd="10dp"
                    android:text="@string/settings_advanced_keep_alive_service_title"
                    android:maxLines="2"
                    android:ellipsize="end"
                    app:layout_constraintTop_toTopOf="@id/keep_alive_service_switch"
                    app:layout_constraintBottom_toBottomOf="@id/keep_alive_service_switch"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintEnd_toStartOf="@id/keep_alive_service_switch"/>

                <androidx.appcompat.widget.AppCompatTextView
                    style="@style/header_style"
                    android:id="@+id/remote_provisioning_label"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_marginStart="16dp"
                    android:layout_marginTop="16dp"
                    android:paddingTop="8dp"
                    android:paddingBottom="8dp"
                    android:text="@string/settings_advanced_remote_provisioning_url"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintTop_toBottomOf="@id/enable_fec_switch"/>

                <androidx.appcompat.widget.AppCompatEditText
                    style="@style/default_text_style"
                    android:id="@+id/remote_provisioning"
                    android:layout_width="0dp"
                    android:layout_height="50dp"
                    android:layout_marginEnd="16dp"
                    android:paddingStart="20dp"
                    android:paddingEnd="20dp"
                    android:text="@={viewModel.remoteProvisioningUrl}"
                    android:textSize="14sp"
                    android:textColor="@color/gray_main2_600"
                    android:maxLines="1"
                    android:background="@drawable/edit_text_background"
                    android:inputType="text|textUri"
                    android:hint="@string/settings_advanced_remote_provisioning_url"
                    app:layout_constraintHorizontal_bias="0"
                    app:layout_constraintWidth_max="@dimen/text_input_max_width"
                    app:layout_constraintTop_toBottomOf="@id/remote_provisioning_label"
                    app:layout_constraintStart_toStartOf="@id/remote_provisioning_label"
                    app:layout_constraintEnd_toEndOf="parent"/>

                <androidx.appcompat.widget.AppCompatTextView
                    style="@style/tertiary_button_label_style"
                    android:id="@+id/download_and_apply"
                    android:onClick="@{() -> viewModel.downloadAndApplyRemoteProvisioning()}"
                    android:enabled="@{viewModel.remoteProvisioningUrl.length() != 0, default=false}"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_marginStart="16dp"
                    android:layout_marginEnd="16dp"
                    android:layout_marginTop="16dp"
                    android:background="@drawable/tertiary_button_background"
                    android:paddingStart="12dp"
                    android:paddingEnd="12dp"
                    android:paddingTop="6dp"
                    android:paddingBottom="6dp"
                    android:gravity="center"
                    android:text="@string/settings_advanced_download_apply_remote_provisioning"
                    android:maxLines="1"
                    android:ellipsize="end"
                    app:layout_constraintEnd_toEndOf="parent"
                    app:layout_constraintTop_toBottomOf="@id/remote_provisioning"/>

                <androidx.appcompat.widget.AppCompatTextView
                    style="@style/section_header_style"
                    android:id="@+id/audio_devices_title"
                    android:onClick="@{() -> viewModel.toggleAudioDevicesExpand()}"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:padding="5dp"
                    android:layout_marginStart="26dp"
                    android:layout_marginEnd="26dp"
                    android:layout_marginTop="16dp"
                    android:text="@string/settings_advanced_audio_devices_title"
                    android:drawableEnd="@{viewModel.expandAudioDevices ? @drawable/caret_up : @drawable/caret_down, default=@drawable/caret_up}"
                    android:drawableTint="?attr/color_main2_600"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintEnd_toEndOf="parent"
                    app:layout_constraintTop_toBottomOf="@id/download_and_apply"/>

                <androidx.constraintlayout.widget.ConstraintLayout
                    android:id="@+id/audio_devices"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_marginStart="16dp"
                    android:layout_marginEnd="16dp"
                    android:paddingBottom="16dp"
                    android:background="@drawable/shape_squircle_white_background"
                    android:orientation="vertical"
                    android:visibility="@{viewModel.expandAudioDevices ? View.VISIBLE : View.GONE}"
                    app:layout_constraintTop_toBottomOf="@id/audio_devices_title"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintEnd_toEndOf="parent">

                    <androidx.appcompat.widget.AppCompatTextView
                        style="@style/header_style"
                        android:id="@+id/input_audio_device_label"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginStart="16dp"
                        android:layout_marginTop="16dp"
                        android:paddingTop="8dp"
                        android:paddingBottom="8dp"
                        android:text="@string/settings_advanced_input_audio_device_title"
                        android:visibility="@{viewModel.expandAudioDevices ? View.VISIBLE : View.GONE}"
                        app:layout_constraintStart_toStartOf="parent"
                        app:layout_constraintTop_toTopOf="parent"/>

                    <androidx.appcompat.widget.AppCompatSpinner
                        style="@style/default_text_style"
                        android:id="@+id/input_audio_device"
                        android:layout_width="0dp"
                        android:layout_height="50dp"
                        android:layout_marginEnd="16dp"
                        android:paddingStart="20dp"
                        android:paddingEnd="20dp"
                        android:textSize="14sp"
                        android:textColor="@color/gray_main2_600"
                        android:gravity="center_vertical"
                        android:overlapAnchor="false"
                        android:dropDownVerticalOffset="2dp"
                        android:spinnerMode="dropdown"
                        android:popupBackground="@drawable/shape_squircle_white_background"
                        android:background="@drawable/edit_text_background"
                        android:visibility="@{viewModel.expandAudioDevices ? View.VISIBLE : View.GONE}"
                        app:layout_constraintTop_toBottomOf="@id/input_audio_device_label"
                        app:layout_constraintStart_toStartOf="@id/input_audio_device_label"
                        app:layout_constraintEnd_toEndOf="parent" />

                    <ImageView
                        android:id="@+id/input_audio_device_caret"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginEnd="16dp"
                        android:src="@drawable/caret_down"
                        android:contentDescription="@null"
                        android:visibility="@{viewModel.expandAudioDevices ? View.VISIBLE : View.GONE}"
                        app:layout_constraintTop_toTopOf="@id/input_audio_device"
                        app:layout_constraintBottom_toBottomOf="@id/input_audio_device"
                        app:layout_constraintEnd_toEndOf="@id/input_audio_device"/>

                    <androidx.appcompat.widget.AppCompatTextView
                        style="@style/header_style"
                        android:id="@+id/output_audio_device_label"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginStart="16dp"
                        android:layout_marginTop="16dp"
                        android:paddingTop="8dp"
                        android:paddingBottom="8dp"
                        android:text="@string/settings_advanced_output_audio_device_title"
                        android:visibility="@{viewModel.expandAudioDevices ? View.VISIBLE : View.GONE}"
                        app:layout_constraintStart_toStartOf="parent"
                        app:layout_constraintTop_toBottomOf="@id/input_audio_device"/>

                    <androidx.appcompat.widget.AppCompatSpinner
                        style="@style/default_text_style"
                        android:id="@+id/output_audio_device"
                        android:layout_width="0dp"
                        android:layout_height="50dp"
                        android:layout_marginEnd="16dp"
                        android:paddingStart="20dp"
                        android:paddingEnd="20dp"
                        android:textSize="14sp"
                        android:textColor="@color/gray_main2_600"
                        android:gravity="center_vertical"
                        android:overlapAnchor="false"
                        android:dropDownVerticalOffset="2dp"
                        android:spinnerMode="dropdown"
                        android:popupBackground="@drawable/shape_squircle_white_background"
                        android:background="@drawable/edit_text_background"
                        android:visibility="@{viewModel.expandAudioDevices ? View.VISIBLE : View.GONE}"
                        app:layout_constraintTop_toBottomOf="@id/output_audio_device_label"
                        app:layout_constraintStart_toStartOf="@id/output_audio_device_label"
                        app:layout_constraintEnd_toEndOf="parent" />

                    <ImageView
                        android:id="@+id/output_audio_device_caret"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginEnd="16dp"
                        android:src="@drawable/caret_down"
                        android:contentDescription="@null"
                        android:visibility="@{viewModel.expandAudioDevices ? View.VISIBLE : View.GONE}"
                        app:layout_constraintTop_toTopOf="@id/output_audio_device"
                        app:layout_constraintBottom_toBottomOf="@id/output_audio_device"
                        app:layout_constraintEnd_toEndOf="@id/output_audio_device"/>

                </androidx.constraintlayout.widget.ConstraintLayout>

                <androidx.appcompat.widget.AppCompatTextView
                    style="@style/section_header_style"
                    android:id="@+id/audio_codecs_title"
                    android:onClick="@{() -> viewModel.toggleAudioCodecsExpand()}"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:padding="5dp"
                    android:layout_marginStart="26dp"
                    android:layout_marginEnd="26dp"
                    android:layout_marginTop="16dp"
                    android:text="@string/settings_advanced_audio_codecs_title"
                    android:drawableEnd="@{viewModel.expandAudioCodecs ? @drawable/caret_up : @drawable/caret_down, default=@drawable/caret_up}"
                    android:drawableTint="?attr/color_main2_600"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintEnd_toEndOf="parent"
                    app:layout_constraintTop_toBottomOf="@id/audio_devices"/>

                <LinearLayout
                    android:id="@+id/audio_codecs"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_marginStart="16dp"
                    android:layout_marginEnd="16dp"
                    android:orientation="vertical"
                    android:paddingBottom="16dp"
                    android:background="@drawable/shape_squircle_white_background"
                    android:visibility="@{viewModel.expandAudioCodecs ? View.VISIBLE : View.GONE}"
                    entries="@{viewModel.audioCodecs}"
                    layout="@{@layout/settings_codec_list_cell}"
                    app:layout_constraintTop_toBottomOf="@id/audio_codecs_title"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintEnd_toEndOf="parent" />

                <androidx.appcompat.widget.AppCompatTextView
                    style="@style/section_header_style"
                    android:id="@+id/video_codecs_title"
                    android:onClick="@{() -> viewModel.toggleVideoCodecsExpand()}"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:padding="5dp"
                    android:layout_marginStart="26dp"
                    android:layout_marginEnd="26dp"
                    android:layout_marginTop="16dp"
                    android:text="@string/settings_advanced_video_codecs_title"
                    android:drawableEnd="@{viewModel.expandVideoCodecs ? @drawable/caret_up : @drawable/caret_down, default=@drawable/caret_up}"
                    android:drawableTint="?attr/color_main2_600"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintEnd_toEndOf="parent"
                    app:layout_constraintTop_toBottomOf="@id/audio_codecs"/>

                <LinearLayout
                    android:id="@+id/video_codecs"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_marginStart="16dp"
                    android:layout_marginEnd="16dp"
                    android:layout_marginBottom="@dimen/screen_bottom_margin"
                    android:orientation="vertical"
                    android:paddingBottom="16dp"
                    android:background="@drawable/shape_squircle_white_background"
                    android:visibility="@{viewModel.expandVideoCodecs ? View.VISIBLE : View.GONE}"
                    entries="@{viewModel.videoCodecs}"
                    layout="@{@layout/settings_codec_list_cell}"
                    app:layout_constraintTop_toBottomOf="@id/video_codecs_title"
                    app:layout_constraintBottom_toBottomOf="parent"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintEnd_toEndOf="parent" />

            </androidx.constraintlayout.widget.ConstraintLayout>

        </ScrollView>

    </androidx.constraintlayout.widget.ConstraintLayout>

</layout>