BayernMessenger/vector/src/main/res/layout/item_timeline_event_base.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:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:addStatesFromChildren="true"
    android:background="?attr/selectableItemBackground">

    <im.vector.riotx.core.platform.CheckableView
        android:id="@+id/messageSelectedBackground"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:background="?riotx_highlighted_message_background"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <ImageView
        android:id="@+id/messageAvatarImageView"
        android:layout_width="44dp"
        android:layout_height="44dp"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="4dp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        tools:src="@tools:sample/avatars" />

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/messageStartGuideline"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        tools:layout_constraintGuide_begin="52dp" />

    <TextView
        android:id="@+id/messageMemberNameView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="4dp"
        android:layout_marginEnd="4dp"
        android:layout_marginRight="8dp"
        android:ellipsize="end"
        android:maxLines="1"
        android:textColor="?riotx_text_primary"
        android:textSize="15sp"
        android:textStyle="bold"
        app:layout_constrainedWidth="true"
        app:layout_constraintEnd_toStartOf="@+id/messageTimeView"
        app:layout_constraintHorizontal_bias="0"
        app:layout_constraintHorizontal_chainStyle="spread_inside"
        app:layout_constraintStart_toEndOf="@id/messageStartGuideline"
        app:layout_constraintTop_toTopOf="parent"
        tools:text="@sample/matrix.json/data/displayName" />


    <TextView
        android:id="@+id/messageTimeView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginEnd="8dp"
        android:layout_marginRight="8dp"
        android:textColor="?riotx_text_secondary"
        android:textSize="12sp"
        app:layout_constraintBaseline_toBaselineOf="@id/messageMemberNameView"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@id/messageMemberNameView"
        tools:text="@tools:sample/date/hhmm" />


    <ViewStub
        android:id="@+id/messageContentTextStub"
        style="@style/TimelineContentStubLayoutParams"
        android:inflatedId="@id/messageTextView"
        android:layout="@layout/item_timeline_event_text_message_stub"
        tools:ignore="MissingConstraints"
        tools:visibility="visible" />

    <ViewStub
        android:id="@+id/messageContentMediaStub"
        style="@style/TimelineContentStubLayoutParams"
        android:inflatedId="@+id/messageContentMedia"
        android:layout="@layout/item_timeline_event_media_message_stub"
        tools:ignore="MissingConstraints" />

    <ViewStub
        android:id="@+id/messageContentFileStub"
        style="@style/TimelineContentStubLayoutParams"
        android:layout="@layout/item_timeline_event_file_stub"
        tools:ignore="MissingConstraints" />

    <ViewStub
        android:id="@+id/messageContentRedactedStub"
        style="@style/TimelineContentStubLayoutParams"
        android:layout_height="20dp"
        android:layout_marginEnd="56dp"
        android:layout_marginRight="56dp"
        android:layout="@layout/item_timeline_event_redacted_stub"
        tools:ignore="MissingConstraints" />


    <!-- TODO: For now we show 8 reactions maximum, this will need rework when needed-->
    <ViewStub
        android:id="@+id/messageBottomInfo"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginBottom="4dp"
        android:inflatedId="@+id/messageBottomInfo"
        android:layout="@layout/item_timeline_event_bottom_reactions_stub"
        android:visibility="gone"
        app:layout_constraintBottom_toTopOf="@+id/readReceiptsView"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@id/messageStartGuideline"
        app:layout_constraintVertical_chainStyle="packed"
        tools:visibility="visible">

    </ViewStub>

    <im.vector.riotx.core.ui.views.ReadReceiptsView
        android:id="@+id/readReceiptsView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginEnd="8dp"
        android:layout_marginBottom="4dp"
        app:layout_constraintBottom_toTopOf="@+id/readMarkerView"
        app:layout_constraintEnd_toEndOf="parent" />

    <im.vector.riotx.core.ui.views.ReadMarkerView
        android:id="@+id/readMarkerView"
        android:layout_width="0dp"
        android:layout_height="2dp"
        android:background="?attr/vctr_unread_marker_line_color"
        android:layout_marginBottom="2dp"
        android:visibility="invisible"
        android:layout_marginEnd="8dp"
        android:layout_marginStart="8dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>