activity_uikit.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"
    tools:context=".UIKitActivity">

    <androidx.appcompat.widget.LinearLayoutCompat
        android:id="@+id/mainLayout"
        android:orientation="vertical"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:gravity="center"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <TextView
            android:textSize="20dp"
            android:textColor="@color/primary_500"
            android:layout_width="wrap_content"
            android:layout_height="50dp"
            android:gravity="center_vertical"
            android:text="UIKit inside Fragment"/>

        <androidx.appcompat.widget.LinearLayoutCompat
            android:id="@+id/fragmentContainer"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="1">
          
        </androidx.appcompat.widget.LinearLayoutCompat>
    </androidx.appcompat.widget.LinearLayoutCompat>
</androidx.constraintlayout.widget.ConstraintLayout>