linphone-android/app/src/main/res/layout/new_conversation_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="cancelClickListener"
            type="View.OnClickListener" />
        <variable
            name="viewModel"
            type="org.linphone.ui.main.conversations.viewmodel.NewConversationViewModel" />
    </data>

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@android:color/transparent">

        <ImageView
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:layout_marginTop="10dp"
            android:src="@drawable/shape_white_background"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintBottom_toBottomOf="parent" />

        <androidx.appcompat.widget.AppCompatTextView
            android:id="@+id/cancel"
            android:onClick="@{cancelClickListener}"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Annuler"
            android:textSize="15sp"
            android:padding="10dp"
            android:textColor="@color/gray_1"
            android:layout_marginStart="15dp"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="@id/title"
            app:layout_constraintBottom_toBottomOf="@id/subtitle"/>

        <androidx.appcompat.widget.AppCompatTextView
            android:id="@+id/create_group"
            android:onClick="@{() -> viewModel.createGroup()}"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Créer"
            android:textSize="15sp"
            android:padding="10dp"
            android:textColor="@color/primary_color"
            android:layout_marginEnd="15dp"
            android:visibility="@{viewModel.groupEnabled ? View.VISIBLE : View.GONE}"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintTop_toTopOf="@id/title"
            app:layout_constraintBottom_toBottomOf="@id/subtitle"/>

        <androidx.appcompat.widget.AppCompatTextView
            android:id="@+id/title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Nouvelle conversation"
            android:textSize="18sp"
            android:textColor="@color/black"
            android:layout_marginTop="22dp"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintTop_toTopOf="parent"/>

        <androidx.appcompat.widget.AppCompatTextView
            android:id="@+id/subtitle"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Chiffrée de bout en bout"
            android:textSize="14sp"
            android:textColor="@color/gray_1"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintTop_toBottomOf="@id/title"/>

        <EditText
            android:id="@+id/search_bar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="30dp"
            android:layout_marginStart="20dp"
            android:layout_marginEnd="20dp"
            android:padding="10dp"
            android:drawableStart="@drawable/search"
            android:drawablePadding="10dp"
            android:background="@drawable/shape_search_square_background"
            android:hint="Rechercher des contacts"
            android:text="@={viewModel.filter}"
            android:textSize="14sp"
            android:inputType="textPersonName|textNoSuggestions"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintTop_toBottomOf="@id/subtitle" />

        <ImageView
            android:onClick="@{() -> viewModel.enableGroupSelection()}"
            android:id="@+id/new_group_avatar"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@drawable/group_chat"
            android:padding="10dp"
            android:background="@drawable/shape_orange_round"
            android:layout_marginTop="30dp"
            android:layout_marginStart="20dp"
            android:visibility="@{viewModel.filter.length() > 0 || viewModel.groupEnabled ? View.GONE : View.VISIBLE}"
            app:layout_constraintTop_toBottomOf="@id/search_bar"
            app:layout_constraintStart_toStartOf="parent"/>

        <androidx.appcompat.widget.AppCompatTextView
            android:onClick="@{() -> viewModel.enableGroupSelection()}"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:text="Créer un nouveau groupe"
            android:textSize="16sp"
            android:padding="5dp"
            android:layout_marginStart="7dp"
            android:layout_marginEnd="20dp"
            android:drawableEnd="@drawable/next"
            android:drawablePadding="5dp"
            android:visibility="@{viewModel.filter.length() > 0 || viewModel.groupEnabled ? View.GONE : View.VISIBLE}"
            app:layout_constraintStart_toEndOf="@id/new_group_avatar"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintTop_toTopOf="@id/new_group_avatar"
            app:layout_constraintBottom_toBottomOf="@id/new_group_avatar"/>

        <androidx.recyclerview.widget.RecyclerView
            android:id="@+id/contacts_list"
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:layout_marginTop="20dp"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintTop_toBottomOf="@id/new_group_avatar"
            app:layout_constraintBottom_toBottomOf="parent" />

    </androidx.constraintlayout.widget.ConstraintLayout>

</layout>