linphone-android/app/src/main/res/layout/settings_contacts.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="viewModel"
            type="org.linphone.ui.main.settings.viewmodel.SettingsViewModel" />
    </data>

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:paddingBottom="20dp"
        android:background="@drawable/shape_squircle_white_background">

        <androidx.appcompat.widget.AppCompatTextView
            style="@style/settings_title_padding_style"
            android:id="@+id/sort_contacts_by_first_name_title"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_marginTop="20dp"
            android:layout_marginStart="16dp"
            android:layout_marginEnd="10dp"
            android:text="@string/settings_contacts_sort_by_first_name_title"
            android:maxLines="2"
            android:ellipsize="end"
            android:labelFor="@id/sort_contacts_by_first_name_spinner"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintEnd_toEndOf="parent"/>

        <androidx.appcompat.widget.AppCompatSpinner
            style="@style/material_switch_style"
            android:id="@+id/sort_contacts_by_first_name_spinner"
            android:layout_width="0dp"
            android:layout_height="50dp"
            android:layout_marginEnd="10dp"
            android:background="@drawable/edit_text_background"
            android:paddingStart="@dimen/spinner_start_padding"
            android:paddingEnd="@dimen/spinner_end_padding"
            android:overlapAnchor="false"
            android:spinnerMode="dropdown"
            android:popupBackground="@drawable/shape_squircle_white_background"
            app:layout_constraintHorizontal_bias="0"
            app:layout_constraintWidth_max="@dimen/text_input_max_width"
            app:layout_constraintTop_toBottomOf="@id/sort_contacts_by_first_name_title"
            app:layout_constraintStart_toStartOf="@id/sort_contacts_by_first_name_title"
            app:layout_constraintEnd_toEndOf="@id/sort_contacts_by_first_name_title" />

        <ImageView
            android:id="@+id/sort_contacts_by_first_name_spinner_caret"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginEnd="@dimen/spinner_caret_end_margin"
            android:src="@drawable/caret_down"
            android:contentDescription="@string/content_description_spinner_caret"
            app:tint="?attr/color_main2_600"
            app:layout_constraintTop_toTopOf="@id/sort_contacts_by_first_name_spinner"
            app:layout_constraintBottom_toBottomOf="@id/sort_contacts_by_first_name_spinner"
            app:layout_constraintEnd_toEndOf="@id/sort_contacts_by_first_name_spinner"/>

        <androidx.appcompat.widget.AppCompatTextView
            style="@style/settings_title_style"
            android:onClick="@{() -> viewModel.toggleHideEmptyContacts()}"
            android:id="@+id/hide_empty_contacts_title"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_marginStart="16dp"
            android:layout_marginEnd="10dp"
            android:text="@string/settings_contacts_hide_empty_contacts_title"
            android:maxLines="2"
            android:ellipsize="end"
            android:labelFor="@id/hide_empty_contacts_switch"
            app:layout_constraintTop_toTopOf="@id/hide_empty_contacts_switch"
            app:layout_constraintBottom_toBottomOf="@id/hide_empty_contacts_switch"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintEnd_toStartOf="@id/hide_empty_contacts_switch"/>

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

        <androidx.appcompat.widget.AppCompatTextView
            style="@style/settings_title_style"
            android:onClick="@{() -> viewModel.toggleEditNativeContactsInLinphone()}"
            android:id="@+id/edit_native_contacts_in_linphone_title"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_marginStart="16dp"
            android:layout_marginEnd="10dp"
            android:text="@string/settings_contacts_edit_native_contacts_in_linphone_title"
            android:maxLines="2"
            android:ellipsize="end"
            android:labelFor="@id/edit_native_contacts_in_linphone_switch"
            app:layout_constraintTop_toTopOf="@id/edit_native_contacts_in_linphone_switch"
            app:layout_constraintBottom_toBottomOf="@id/edit_native_contacts_in_linphone_switch"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintEnd_toStartOf="@id/edit_native_contacts_in_linphone_switch"/>

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

        <androidx.appcompat.widget.AppCompatTextView
            style="@style/settings_title_style"
            android:onClick="@{() -> viewModel.addLdapServer()}"
            android:id="@+id/add_ldap_server"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_marginStart="16dp"
            android:layout_marginEnd="16dp"
            android:layout_marginTop="20dp"
            android:padding="5dp"
            android:text="@string/settings_contacts_add_ldap_server_title"
            android:maxLines="2"
            android:ellipsize="end"
            android:drawableEnd="@drawable/caret_right"
            android:drawableTint="?attr/color_main2_600"
            android:background="@drawable/squircle_transparent_button_background"
            android:visibility="@{viewModel.ldapAvailable ? View.VISIBLE : View.GONE}"
            app:layout_constraintTop_toBottomOf="@id/hide_empty_contacts_switch"
            app:layout_constraintBottom_toTopOf="@id/existing_ldap_servers"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintEnd_toEndOf="parent"/>

        <LinearLayout
            android:id="@+id/existing_ldap_servers"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_marginStart="16dp"
            android:layout_marginEnd="16dp"
            android:layout_marginTop="6dp"
            android:orientation="vertical"
            android:visibility="@{viewModel.ldapServers.size() == 0 ? View.GONE : View.VISIBLE, default=gone}"
            app:entries="@{viewModel.ldapServers}"
            app:layout="@{@layout/settings_contacts_carddav_ldap_list_cell}"
            app:layout_constraintTop_toBottomOf="@id/add_ldap_server"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintEnd_toEndOf="parent" />

        <androidx.appcompat.widget.AppCompatTextView
            style="@style/settings_title_style"
            android:onClick="@{() -> viewModel.addCardDavServer()}"
            android:id="@+id/add_carddav_server"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_marginStart="16dp"
            android:layout_marginEnd="16dp"
            android:layout_marginTop="16dp"
            android:padding="5dp"
            android:text="@string/settings_contacts_add_carddav_server_title"
            android:maxLines="2"
            android:ellipsize="end"
            android:drawableEnd="@drawable/caret_right"
            android:drawableTint="?attr/color_main2_600"
            android:background="@drawable/squircle_transparent_button_background"
            app:layout_constraintTop_toBottomOf="@id/existing_ldap_servers"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintEnd_toEndOf="parent"/>

        <LinearLayout
            android:id="@+id/existing_carddav_servers"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_marginStart="16dp"
            android:layout_marginEnd="16dp"
            android:layout_marginTop="6dp"
            android:orientation="vertical"
            android:visibility="@{viewModel.cardDavFriendsLists.size() == 0 ? View.GONE : View.VISIBLE, default=gone}"
            app:entries="@{viewModel.cardDavFriendsLists}"
            app:layout="@{@layout/settings_contacts_carddav_ldap_list_cell}"
            app:layout_constraintTop_toBottomOf="@id/add_carddav_server"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintEnd_toEndOf="parent" />

        <androidx.appcompat.widget.AppCompatTextView
            style="@style/settings_title_style"
            android:onClick="@{() -> viewModel.togglePresenceSubscribe()}"
            android:id="@+id/presence_subscribe_title"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_marginStart="16dp"
            android:layout_marginEnd="10dp"
            android:text="@string/settings_contacts_presence_subscribe_title"
            android:maxLines="2"
            android:ellipsize="end"
            android:labelFor="@id/presence_subscribe_switch"
            app:layout_constraintTop_toTopOf="@id/presence_subscribe_switch"
            app:layout_constraintBottom_toBottomOf="@id/presence_subscribe_switch"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintEnd_toStartOf="@id/presence_subscribe_switch"/>

        <com.google.android.material.materialswitch.MaterialSwitch
            style="@style/material_switch_style"
            android:id="@+id/presence_subscribe_switch"
            android:onClick="@{() -> viewModel.togglePresenceSubscribe()}"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="20dp"
            android:layout_marginEnd="16dp"
            android:checked="@{viewModel.presenceSubscribe}"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintTop_toBottomOf="@id/existing_carddav_servers"
            app:layout_constraintBottom_toBottomOf="parent" />

    </androidx.constraintlayout.widget.ConstraintLayout>

</layout>