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

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

<androidx.constraintlayout.widget.ConstraintLayout 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="?attr/selectableItemBackground"
    android:clickable="true"
    android:focusable="true"
    android:minHeight="48dp"
    android:paddingStart="8dp"
    android:paddingLeft="8dp"
    android:paddingEnd="16dp"
    android:paddingRight="16dp">

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

    <TextView
        android:id="@+id/roomNameView"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginEnd="16dp"
        android:duplicateParentState="true"
        android:textColor="@color/color_room_title"
        android:textSize="14sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toStartOf="@+id/roomUnreadCounterBadgeView"
        app:layout_constraintStart_toEndOf="@id/roomAvatarImageView"
        app:layout_constraintTop_toTopOf="parent"
        tools:text="@tools:sample/full_names" />

    <im.vector.riotredesign.features.home.room.list.UnreadCounterBadgeView
        android:id="@+id/roomUnreadCounterBadgeView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:minWidth="24dp"
        android:minHeight="24dp"
        android:paddingLeft="4dp"
        android:paddingRight="4dp"
        android:textColor="@android:color/white"
        android:textSize="12sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintDimensionRatio="1:1"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        tools:background="@drawable/bg_unread_highlight"
        tools:text="115" />

</androidx.constraintlayout.widget.ConstraintLayout>