<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@android:color/transparent"
        android:orientation="vertical">

    <View
            android:id="@+id/little_triangle"
            android:layout_width="17dp"
            android:layout_height="8.5dp"
            android:layout_gravity="center_horizontal"
            android:background="@drawable/little_triangle" />

    <androidx.recyclerview.widget.RecyclerView
            android:id="@+id/list"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:background="@drawable/bubble"
            app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager" />

</LinearLayout>