BarInsta/app/src/main/res/layout/fragment_user_search.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="match_parent"
    android:focusableInTouchMode="true">

    <com.google.android.material.chip.ChipGroup
        android:id="@+id/group"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@drawable/bg_user_search_input"
        android:padding="10dp"
        app:layout_constraintBottom_toTopOf="@id/results"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <androidx.appcompat.widget.AppCompatEditText
            android:id="@+id/search"
            android:layout_width="match_parent"
            android:layout_height="48dp"
            android:background="@android:color/transparent"
            android:gravity="center_vertical"
            android:hint="@string/search"
            android:importantForAutofill="no"
            android:inputType="textNoSuggestions"
            android:maxLines="1"
            tools:text="test" />
    </com.google.android.material.chip.ChipGroup>

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/results"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        app:layout_constraintBottom_toTopOf="@id/done"
        app:layout_constraintTop_toBottomOf="@id/group" />

    <androidx.appcompat.widget.AppCompatButton
        android:id="@+id/done"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:backgroundTint="?attr/colorPrimary"
        android:text="@string/done"
        android:textColor="?attr/colorOnPrimary"
        android:visibility="gone"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintTop_toBottomOf="@id/results"
        tools:layout_editor_absoluteX="8dp"
        tools:visibility="visible" />
</androidx.constraintlayout.widget.ConstraintLayout>