Signal-Android/app/src/main/res/layout/call_state_update.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout 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="wrap_content"
    android:layout_height="wrap_content"
    android:minHeight="82dp"
    tools:viewBindingIgnore="true">

    <androidx.constraintlayout.widget.ConstraintLayout
        android:id="@+id/call_state_pill"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:layout_marginStart="12dp"
        android:layout_marginTop="30dp"
        android:layout_marginEnd="12dp"
        android:background="@drawable/call_participant_update_window_background"
        android:elevation="4dp">

        <ImageView
            android:id="@+id/icon"
            android:layout_width="16dp"
            android:layout_height="16dp"
            android:layout_marginVertical="10dp"
            android:layout_marginStart="16dp"
            android:importantForAccessibility="no"
            android:visibility="gone"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            tools:background="@drawable/circle_ultramarine"
            tools:src="@drawable/ic_profile_80"
            tools:visibility="visible" />

        <TextView
            android:id="@+id/description"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="10dp"
            android:layout_marginTop="8dp"
            android:layout_marginEnd="16dp"
            android:layout_marginBottom="8dp"
            android:gravity="center_vertical"
            android:textAppearance="@style/Signal.Text.BodyMedium"
            android:textColor="@color/signal_light_colorOnSecondaryContainer"
            app:layout_constrainedWidth="true"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintHorizontal_bias="1.0"
            app:layout_constraintStart_toEndOf="@id/icon"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintVertical_bias="1.0"
            app:layout_goneMarginStart="16dp"
            tools:text="Kiera joined" />

    </androidx.constraintlayout.widget.ConstraintLayout>
</FrameLayout>