element-android/app/src/main/res/layout/item_room.xml

<?xml version="1.0" encoding="utf-8"?>

<im.vector.riotredesign.core.platform.CheckableConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/itemRoomLayout"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@drawable/bg_room_item"
    android:minHeight="48dp">

    <ImageView
        android:id="@+id/toolbarAvatarImageView"
        android:layout_width="32dp"
        android:layout_height="32dp"
        android:layout_marginStart="16dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        tools:src="@tools:sample/avatars" />

    <TextView xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        android:id="@+id/titleView"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:textSize="14sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@id/toolbarAvatarImageView"
        app:layout_constraintTop_toTopOf="parent"
        tools:text="@tools:sample/full_names" />

</im.vector.riotredesign.core.platform.CheckableConstraintLayout>