element-android/vector/src/main/res/layout/item_user.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/itemUserRoot"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="?riotx_background"
    android:foreground="?attr/selectableItemBackground"
    android:gravity="center_vertical"
    android:orientation="horizontal"
    android:padding="8dp">

    <ImageView
        android:id="@+id/itemUserAvatar"
        android:layout_width="40dp"
        android:layout_height="40dp"
        android:layout_marginStart="8dp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        tools:src="@tools:sample/avatars" />

    <im.vector.riotx.core.platform.EllipsizingTextView
        android:id="@+id/itemUserId"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_gravity="center_vertical"
        android:layout_marginStart="12dp"
        android:ellipsize="end"
        android:maxLines="1"
        android:textColor="?riotx_text_primary"
        android:textSize="15sp"
        android:textStyle="bold"
        app:layout_constraintBottom_toTopOf="@+id/itemUserName"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@+id/itemUserAvatar"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_chainStyle="packed"
        tools:text="@sample/matrix.json/data/mxid" />

    <im.vector.riotx.core.platform.EllipsizingTextView
        android:id="@+id/itemUserName"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="12dp"
        android:ellipsize="end"
        android:maxLines="1"
        android:textColor="?riotx_text_secondary"
        android:textSize="15sp"
        android:visibility="gone"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@+id/itemUserAvatar"
        app:layout_constraintTop_toBottomOf="@+id/itemUserId"
        tools:text="@sample/matrix.json/data/displayName"
        tools:visibility="visible" />

</androidx.constraintlayout.widget.ConstraintLayout>