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="?android:colorBackground"
    android:clickable="true"
    android:focusable="true"
    android:foreground="?attr/selectableItemBackground">

    <View
        android:id="@+id/roomUnreadIndicator"
        android:layout_width="4dp"
        android:layout_height="0dp"
        android:background="?colorSecondary"
        android:visibility="gone"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        tools:visibility="visible" />

    <FrameLayout
        android:id="@+id/roomAvatarContainer"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginTop="12dp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <ImageView
            android:id="@+id/roomAvatarImageView"
            android:layout_width="56dp"
            android:layout_height="56dp"
            android:contentDescription="@string/avatar"
            tools:src="@sample/room_round_avatars" />

        <ImageView
            android:id="@+id/roomAvatarCheckedImageView"
            android:layout_width="56dp"
            android:layout_height="56dp"
            android:contentDescription="@string/a11y_checked"
            android:scaleType="centerInside"
            android:src="@drawable/ic_material_done"
            app:tint="@android:color/white"
            tools:ignore="MissingPrefix" />

    </FrameLayout>

    <ImageView
        android:id="@+id/roomAvatarFailSendingImageView"
        android:layout_width="16dp"
        android:layout_height="16dp"
        android:contentDescription="@string/a11y_error_some_message_not_sent"
        android:src="@drawable/ic_warning_badge"
        app:layout_constraintCircle="@id/roomAvatarContainer"
        app:layout_constraintCircleAngle="45"
        app:layout_constraintCircleRadius="30dp"
        tools:ignore="MissingConstraints" />

    <!-- Note: this is always gone now -->
    <im.vector.app.core.ui.views.ShieldImageView
        android:id="@+id/roomAvatarDecorationImageView"
        android:layout_width="24dp"
        android:layout_height="24dp"
        app:layout_constraintCircle="@id/roomAvatarContainer"
        app:layout_constraintCircleAngle="135"
        app:layout_constraintCircleRadius="28dp"
        tools:ignore="MissingConstraints"
        tools:visibility="gone" />

    <ImageView
        android:id="@+id/roomAvatarPublicDecorationImageView"
        android:layout_width="20dp"
        android:layout_height="20dp"
        android:background="@drawable/background_circle"
        android:contentDescription="@string/a11y_public_room"
        android:padding="2dp"
        android:src="@drawable/ic_public_room"
        android:visibility="gone"
        app:layout_constraintCircle="@id/roomAvatarContainer"
        app:layout_constraintCircleAngle="135"
        app:layout_constraintCircleRadius="28dp"
        tools:ignore="MissingConstraints"
        tools:visibility="visible" />

    <!-- Margin bottom does not work, so I use space -->
    <Space
        android:id="@+id/roomAvatarBottomSpace"
        android:layout_width="0dp"
        android:layout_height="12dp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/roomAvatarContainer"
        tools:layout_marginStart="20dp" />

    <TextView
        android:id="@+id/roomNameView"
        style="@style/Widget.Vector.TextView.Subtitle"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="@dimen/layout_horizontal_margin"
        android:layout_marginTop="12dp"
        android:layout_marginEnd="8dp"
        android:duplicateParentState="true"
        android:ellipsize="end"
        android:maxLines="1"
        android:textColor="?vctr_content_primary"
        android:textStyle="bold"
        app:layout_constrainedWidth="true"
        app:layout_constraintEnd_toStartOf="@+id/roomDraftBadge"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintHorizontal_chainStyle="packed"
        app:layout_constraintStart_toEndOf="@id/roomAvatarContainer"
        app:layout_constraintTop_toTopOf="parent"
        tools:text="@sample/users.json/data/displayName" />

    <ImageView
        android:id="@+id/roomDraftBadge"
        android:layout_width="16dp"
        android:layout_height="16dp"
        android:layout_marginStart="4dp"
        android:layout_marginEnd="4dp"
        android:contentDescription="@string/a11y_unsent_draft"
        android:src="@drawable/ic_edit"
        android:visibility="gone"
        app:layout_constraintBottom_toBottomOf="@+id/roomNameView"
        app:layout_constraintEnd_toStartOf="@+id/roomUnreadCounterBadgeView"
        app:layout_constraintStart_toEndOf="@+id/roomNameView"
        app:layout_constraintTop_toTopOf="@+id/roomNameView"
        app:tint="?vctr_content_primary"
        tools:ignore="MissingPrefix"
        tools:visibility="visible" />

    <im.vector.app.features.home.room.list.UnreadCounterBadgeView
        android:id="@+id/roomUnreadCounterBadgeView"
        style="@style/Widget.Vector.TextView.Micro"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginEnd="8dp"
        android:gravity="center"
        android:minWidth="16dp"
        android:minHeight="16dp"
        android:paddingStart="4dp"
        android:paddingEnd="4dp"
        android:textColor="?colorOnError"
        android:visibility="gone"
        app:layout_constraintBottom_toBottomOf="@+id/roomNameView"
        app:layout_constraintEnd_toStartOf="@+id/roomLastEventTimeView"
        app:layout_constraintStart_toEndOf="@+id/roomDraftBadge"
        app:layout_constraintTop_toTopOf="@+id/roomNameView"
        tools:background="@drawable/bg_unread_highlight"
        tools:text="4"
        tools:visibility="visible" />

    <TextView
        android:id="@+id/roomLastEventTimeView"
        style="@style/Widget.Vector.TextView.Caption"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginEnd="8dp"
        android:textColor="?vctr_content_secondary"
        app:layout_constraintBottom_toBottomOf="@+id/roomNameView"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="@+id/roomNameView"
        tools:text="@tools:sample/date/hhmm" />

    <TextView
        android:id="@+id/roomLastEventView"
        style="@style/Widget.Vector.TextView.Body"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginTop="3dp"
        android:layout_marginEnd="8dp"
        android:ellipsize="end"
        android:maxLines="2"
        android:textColor="?vctr_content_secondary"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="@+id/roomNameView"
        app:layout_constraintTop_toBottomOf="@+id/roomNameView"
        tools:text="@sample/messages.json/data/message" />

    <TextView
        android:id="@+id/roomTypingView"
        style="@style/Widget.Vector.TextView.Body"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginTop="3dp"
        android:layout_marginEnd="8dp"
        android:ellipsize="end"
        android:maxLines="2"
        android:textColor="?colorPrimary"
        android:textStyle="bold"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="@+id/roomNameView"
        app:layout_constraintTop_toBottomOf="@+id/roomNameView"
        tools:text="Alice is typing…" />

    <!-- Margin bottom does not work, so I use space -->
    <Space
        android:id="@+id/roomLastEventBottomSpace"
        android:layout_width="0dp"
        android:layout_height="7dp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/roomLastEventView"
        tools:layout_marginStart="120dp" />

    <androidx.constraintlayout.widget.Barrier
        android:id="@+id/roomBottomBarrier"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:barrierDirection="bottom"
        app:constraint_referenced_ids="roomAvatarBottomSpace,roomLastEventBottomSpace" />

    <!-- We use vctr_list_separator_system here for a better rendering -->
    <View
        android:id="@+id/roomDividerView"
        android:layout_width="0dp"
        android:layout_height="1dp"
        android:background="?vctr_list_separator_system"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/roomBottomBarrier" />

</androidx.constraintlayout.widget.ConstraintLayout>